{ "types" : { "Bookmark" : { "pluralLabel" : "Bookmarks" }, "Publication" : { "pluralLabel" : "Publications" }, "GoldStandardPublication" : { "pluralLabel" : "GoldStandardPublications" }, "GoldStandardBookmark" : { "pluralLabel" : "GoldStandardBookmarks" }, "Tag" : { "pluralLabel" : "Tags" }, "User" : { "pluralLabel" : "Users" }, "Group" : { "pluralLabel" : "Groups" }, "Sphere" : { "pluralLabel" : "Spheres" } }, "properties" : { "count" : { "valueType" : "number" }, "date" : { "valueType" : "date" }, "changeDate" : { "valueType" : "date" }, "url" : { "valueType" : "url" }, "id" : { "valueType" : "url" }, "tags" : { "valueType" : "item" }, "user" : { "valueType" : "item" } }, "items" : [ { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2bec998b43dba4ea7bb81ccffabb01d44/itft-puma", "tags" : [ "Aerospace","Characterization","Composites","Coreless","Fiber","Planetary","analytical","and","composite","engineering","filament","gresser","itft","mindermann","peer-reviewed","structure","sunshade","techniques","truss","wegner","winding" ], "intraHash" : "bec998b43dba4ea7bb81ccffabb01d44", "interHash" : "11cacca053e90a302e1f78d756a37322", "label" : "Long-span fiber composite truss made by coreless filament winding for large-scale satellite structural systems demonstrated on a planetary sunshade concept", "user" : "itft-puma", "description" : "", "date" : "2024-04-17 14:35:40", "changeDate" : "2024-09-02 11:26:31", "count" : 2, "pub-type": "article", "journal": "Scientific Reports", "year": "2024", "url": "https://www.sciencedirect.com/science/article/pii/S266616592400053X", "author": [ "Pascal Mindermann","Denis Acker","Robert Wegner","Stefanos Fasoulas","Götz T. Gresser" ], "authors": [ {"first" : "Pascal", "last" : "Mindermann"}, {"first" : "Denis", "last" : "Acker"}, {"first" : "Robert", "last" : "Wegner"}, {"first" : "Stefanos", "last" : "Fasoulas"}, {"first" : "Götz T.", "last" : "Gresser"} ], "volume": "14","number": "1","pages": "8190","abstract": "Climate change necessitates exploring innovative geoengineering solutions to mitigate its effects---one such solution is deploying planetary sunshade satellites at Sun--Earth Lagrange point 1 to regulate solar radiation on Earth directly. However, such long-span space structures present unique technical challenges, particularly structural scalability, on-orbit manufacturing, and in-situ resource utilization. This paper proposes a structural concept for the sunshade's foil support system and derives from that a component-level modular system for long-span fiber composite lightweight trusses using coreless filament winding. Within a laboratory-scale case study, the component scalability, as well as the manufacturing and material impacts, were experimentally investigated by bending deflection testing. Based on these experimental results, FE models of the proposed structural concept were calibrated to estimate the maximum displacement and mass of the foil support structure, while comparing the influences of foil edge length, orbital load case, and material selection.", "language" : "eng", "issn" : "2045-2322", "doi" : "10.1038/s41598-024-58513-w", "bibtexKey": "Mindermann2024" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/27e018167b367118194d4e954a12f4b81/petraheim", "tags" : [ "2023","analysis","balangé","bischoff","building","co-design","coreless","data","engineering","evaluation","faserverbund","filament-wound","forster","gil","gresser","guo","hügle","itke","kannenberg","knippers","menges","methods","middendorf","mindermann","processing","schwieger","systems","zechmeister" ], "intraHash" : "7e018167b367118194d4e954a12f4b81", "interHash" : "d08262257180e93a130f1a7625fdf4d8", "label" : "Data processing, analysis, and evaluation methods for co-design of coreless filament-wound building systems", "user" : "petraheim", "description" : "", "date" : "2024-01-11 11:54:20", "changeDate" : "2024-01-11 12:44:21", "count" : 7, "pub-type": "article", "journal": "Journal of Computational Design and Engineering", "year": "2023", "url": "", "author": [ "Marta Gil Pérez","Pascal Mindermann","Christoph Zechmeister","David Forster","Yanan Guo","Sebastian Hügle","Fabian Kannenberg","Laura Balangé","Volker Schwieger","Peter Middendorf","Manfred Bischoff","Achim Menges","Götz T Gresser","Jan Knippers" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Pascal", "last" : "Mindermann"}, {"first" : "Christoph", "last" : "Zechmeister"}, {"first" : "David", "last" : "Forster"}, {"first" : "Yanan", "last" : "Guo"}, {"first" : "Sebastian", "last" : "Hügle"}, {"first" : "Fabian", "last" : "Kannenberg"}, {"first" : "Laura", "last" : "Balangé"}, {"first" : "Volker", "last" : "Schwieger"}, {"first" : "Peter", "last" : "Middendorf"}, {"first" : "Manfred", "last" : "Bischoff"}, {"first" : "Achim", "last" : "Menges"}, {"first" : "Götz T", "last" : "Gresser"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "10","number": "4","pages": "1460-1478","abstract": "The linear design workflow for structural systems, involving a multitude of iterative loops and specialists, obstructs disruptive innovations. During design iterations, vast amounts of data in different reference systems, origins, and significance are generated. This data is often not directly comparable or is not collected at all, which implies a great unused potential for advancements in the process. In this paper, a novel workflow to process and analyze the data sets in a unified reference frame is proposed. From this, differently sophisticated iteration loops can be derived. The developed methods are presented within a case study using coreless filament winding as an exemplary fabrication process within an architectural context. This additive manufacturing process, using fiber-reinforced plastics, exhibits great potential for efficient structures when its intrinsic parameter variations can be minimized. The presented method aims to make data sets comparable by identifying the steps each data set needs to undergo (acquisition, pre-processing, mapping, post-processing, analysis, and evaluation). These processes are imperative to provide the means to find domain interrelations, which in the future can provide quantitative results that will help to inform the design process, making it more reliable, and allowing for the reduction of safety factors. The results of the case study demonstrate the data set processes, proving the necessity of these methods for the comprehensive inter-domain data comparison.", "doi" : "10.1093/jcde/qwad064", "bibtexKey": "gilperez2023processing" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/27e018167b367118194d4e954a12f4b81/itke", "tags" : [ "faserverbund","hügle","2023","knippers","engineering","analysis","forster","itke","processing","menges","guo","filament-wound","co-design","coreless","methods","data","gil","mindermann","zechmeister","building","gresser","middendorf","kannenberg","systems","balangé","evaluation","schwieger","bischoff" ], "intraHash" : "7e018167b367118194d4e954a12f4b81", "interHash" : "d08262257180e93a130f1a7625fdf4d8", "label" : "Data processing, analysis, and evaluation methods for co-design of coreless filament-wound building systems", "user" : "itke", "description" : "", "date" : "2024-01-11 11:54:20", "changeDate" : "2024-01-11 12:44:21", "count" : 7, "pub-type": "article", "journal": "Journal of Computational Design and Engineering", "year": "2023", "url": "", "author": [ "Marta Gil Pérez","Pascal Mindermann","Christoph Zechmeister","David Forster","Yanan Guo","Sebastian Hügle","Fabian Kannenberg","Laura Balangé","Volker Schwieger","Peter Middendorf","Manfred Bischoff","Achim Menges","Götz T Gresser","Jan Knippers" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Pascal", "last" : "Mindermann"}, {"first" : "Christoph", "last" : "Zechmeister"}, {"first" : "David", "last" : "Forster"}, {"first" : "Yanan", "last" : "Guo"}, {"first" : "Sebastian", "last" : "Hügle"}, {"first" : "Fabian", "last" : "Kannenberg"}, {"first" : "Laura", "last" : "Balangé"}, {"first" : "Volker", "last" : "Schwieger"}, {"first" : "Peter", "last" : "Middendorf"}, {"first" : "Manfred", "last" : "Bischoff"}, {"first" : "Achim", "last" : "Menges"}, {"first" : "Götz T", "last" : "Gresser"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "10","number": "4","pages": "1460-1478","abstract": "The linear design workflow for structural systems, involving a multitude of iterative loops and specialists, obstructs disruptive innovations. During design iterations, vast amounts of data in different reference systems, origins, and significance are generated. This data is often not directly comparable or is not collected at all, which implies a great unused potential for advancements in the process. In this paper, a novel workflow to process and analyze the data sets in a unified reference frame is proposed. From this, differently sophisticated iteration loops can be derived. The developed methods are presented within a case study using coreless filament winding as an exemplary fabrication process within an architectural context. This additive manufacturing process, using fiber-reinforced plastics, exhibits great potential for efficient structures when its intrinsic parameter variations can be minimized. The presented method aims to make data sets comparable by identifying the steps each data set needs to undergo (acquisition, pre-processing, mapping, post-processing, analysis, and evaluation). These processes are imperative to provide the means to find domain interrelations, which in the future can provide quantitative results that will help to inform the design process, making it more reliable, and allowing for the reduction of safety factors. The results of the case study demonstrate the data set processes, proving the necessity of these methods for the comprehensive inter-domain data comparison.", "doi" : "10.1093/jcde/qwad064", "bibtexKey": "gilperez2023processing" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2810439a38e14ba17cd6132f4eba825a4/petraheim", "tags" : [ "2023","Integrative","Structural","architecture","building","coreless","coreless-wound","design","engineering","gil","itke","non-standard","perez","structures","systems" ], "intraHash" : "810439a38e14ba17cd6132f4eba825a4", "interHash" : "15365cc39983cee831b10167a2532550", "label" : "Integrative Structural Design of Non-Standard Building Systems: Coreless Filament-Wound Structures as a Case Study.", "user" : "petraheim", "description" : "", "date" : "2023-05-16 10:55:27", "changeDate" : "2023-05-16 10:55:27", "count" : 5, "pub-type": "phdthesis", "series": "Forschungsberichte aus dem Institut für Tragkonstruktionen und Konstruktives Entwerfen, Universität Stuttgart","publisher":"Institut für Tragkonstruktionen und Konstruktives Entwerfen, Universität Stuttgart","address":"Stuttgart", "year": "2023", "url": "", "author": [ "Marta Gil Pérez" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"} ], "volume": "49","pages": "75","abstract": "Our society is experiencing the emergence of novel nonstandard building systems unlocked by digital technologies in the building sector. The utilisation of computational design processes and digital fabrication, coupled with the exploration of new materiality, bring the potential to break with conventional ways of building. However, they also demand new ways of designing and proving the structure's safety.\r\nThis dissertation aims to develop an integrative structural design methodology and workflow to design, optimise and validate non-standard building systems. Therefore, a multiscale, digital-physical approach is proposed, which combines structural simulation with small-scale models and material testing, allowing the structure's optimisation and proof of safety.\r\nThe first two chapters explain the research motivation, objectives and ontextualisation. Historical remarks are given to understand the evolution of structural design and the key aspects that created innovation and non-standard systems in the past. Coreless filament winding (CFW) is also introduced here as a representative example of non-standard building systems.\r\nChapter three contains the publications that describe the development of the integrative structural design methodologies through coreless filament wound structures as a case study. All the publications are supported by CFW specimens\r\nor full-scale built demonstrators, including BUGA Fibre Pavilion, Maison Fibre and LivMatS Pavilion.\r\nChapters four and five summarise the results, generalising the workflow from CFW structures to non-standard building systems into four sub-methods: multi-level modelling and evaluation; structural characterisation; integrative design; and optimisation and safety verification. The discussion locates the integrative structural design in the historical context and analyses the strategies to prove the safety of\r\nother non-standard systems. The conclusion emphasises the potential of this methodology to shorten the gap between research and industry, facilitating the realisation of innovative structures.", "isbn" : "978-3--922302-49-0", "language" : "eng", "bibtexKey": "gilperez2023integrative" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2810439a38e14ba17cd6132f4eba825a4/itke", "tags" : [ "coreless","Structural","gil","perez","2023","building","engineering","non-standard","systems","design","Integrative","itke","from:petraheim","structures","coreless-wound","architecture" ], "intraHash" : "810439a38e14ba17cd6132f4eba825a4", "interHash" : "15365cc39983cee831b10167a2532550", "label" : "Integrative Structural Design of Non-Standard Building Systems: Coreless Filament-Wound Structures as a Case Study.", "user" : "itke", "description" : "", "date" : "2023-05-16 10:55:27", "changeDate" : "2023-05-16 10:55:27", "count" : 5, "pub-type": "phdthesis", "series": "Forschungsberichte aus dem Institut für Tragkonstruktionen und Konstruktives Entwerfen, Universität Stuttgart","publisher":"Institut für Tragkonstruktionen und Konstruktives Entwerfen, Universität Stuttgart","address":"Stuttgart", "year": "2023", "url": "", "author": [ "Marta Gil Pérez" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"} ], "volume": "49","pages": "75","abstract": "Our society is experiencing the emergence of novel nonstandard building systems unlocked by digital technologies in the building sector. The utilisation of computational design processes and digital fabrication, coupled with the exploration of new materiality, bring the potential to break with conventional ways of building. However, they also demand new ways of designing and proving the structure's safety.\r\nThis dissertation aims to develop an integrative structural design methodology and workflow to design, optimise and validate non-standard building systems. Therefore, a multiscale, digital-physical approach is proposed, which combines structural simulation with small-scale models and material testing, allowing the structure's optimisation and proof of safety.\r\nThe first two chapters explain the research motivation, objectives and ontextualisation. Historical remarks are given to understand the evolution of structural design and the key aspects that created innovation and non-standard systems in the past. Coreless filament winding (CFW) is also introduced here as a representative example of non-standard building systems.\r\nChapter three contains the publications that describe the development of the integrative structural design methodologies through coreless filament wound structures as a case study. All the publications are supported by CFW specimens\r\nor full-scale built demonstrators, including BUGA Fibre Pavilion, Maison Fibre and LivMatS Pavilion.\r\nChapters four and five summarise the results, generalising the workflow from CFW structures to non-standard building systems into four sub-methods: multi-level modelling and evaluation; structural characterisation; integrative design; and optimisation and safety verification. The discussion locates the integrative structural design in the historical context and analyses the strategies to prove the safety of\r\nother non-standard systems. The conclusion emphasises the potential of this methodology to shorten the gap between research and industry, facilitating the realisation of innovative structures.", "isbn" : "978-3--922302-49-0", "language" : "eng", "bibtexKey": "gilperez2023integrative" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/27e2ca5a3aff35c16bb99676c359876b3/itke", "tags" : [ "Finite","layup","fiber","knippers","2022","engineering","analysis","filament","Fiber-reinforced","itke","serhan","from:petraheim","winding","(FEA)","Lamination","parameters","methodology","components","guo","buckling","polymer","gil","wound","design","optimization","structural","(FRP)","element","Coreless","architecture" ], "intraHash" : "7e2ca5a3aff35c16bb99676c359876b3", "interHash" : "4f98bbc60a12e811d97756c7daf76b15", "label" : "A design methodology for fiber layup optimization of filament wound structural components", "user" : "itke", "description" : "", "date" : "2022-04-22 12:30:17", "changeDate" : "2022-04-22 10:30:17", "count" : 6, "pub-type": "article", "journal": "Structures","publisher":"ELSEVIER SCI LTD", "year": "2022", "url": "", "author": [ "Yanan Guo","Marta Gil Pérez","Gokhan Serhat","Jan Knippers" ], "authors": [ {"first" : "Yanan", "last" : "Guo"}, {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Gokhan", "last" : "Serhat"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "38","pages": "1125-1136","abstract": "The applications of fiber-reinforced polymer (FRP) composites extend rapidly along with the development of new manufacturing techniques. However, due to the complexities introduced by the material and fabrication processes, the application of conventional structural design methods for construction members has been significantly challenging. This paper presents an alternative methodology to find optimum fiber layups for a given tube-shape geometry via a graphical optimization strategy based on structural performance requirements. The proposed technique employs simplified shell element models based on classical lamination theory (CLT) to avoid explicit fiber modeling in the FEA simulations. Lamination parameters are utilized to generate the reduced stiffness matrices for continuous multi-layer FRP lamination. The fiber layup of the component is retrieved from the optimal lamination parameters that maximize the structural performance. The case study results demonstrate that the developed method provides compact solutions, linking the structural design requirements with optimal fiber orientations and volumetric proportions. In addition, the determined solutions can be interpreted directly by the winding fabrication settings.", "language" : "eng", "doi" : "https://doi.org/10.1016/j.istruc.2022.02.048", "bibtexKey": "guo2022design" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/261f2bd46c2be89c3ceca7747b7a19864/petraheim", "tags" : [ "2022","behavior","composite","coreless","engineering","fiber-optical","filament","gil","gresser","integration,","itke","kamimura","knippers","mindermann","sensor","sensor,","structural","winding," ], "intraHash" : "61f2bd46c2be89c3ceca7747b7a19864", "interHash" : "75804167cdd1e6a8170e690c2ed2de3c", "label" : "Implementation of Fiber-Optical Sensors into Coreless Filament-Wound Composite Structures", "user" : "petraheim", "description" : "", "date" : "2022-04-22 12:25:25", "changeDate" : "2022-04-22 10:25:25", "count" : 6, "pub-type": "article", "journal": "Composite Structures", "year": "2022", "url": "https://www.sciencedirect.com/science/article/pii/S0263822322003464", "author": [ "Pascal Mindermann","Marta Gil Pérez","Naoki Kamimura","Jan Knippers","Götz T. Gresser" ], "authors": [ {"first" : "Pascal", "last" : "Mindermann"}, {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Naoki", "last" : "Kamimura"}, {"first" : "Jan", "last" : "Knippers"}, {"first" : "Götz T.", "last" : "Gresser"} ], "volume": "290","pages": "115558","abstract": "Fiber-reinforced composite structures manufactured by coreless filament winding (CFW) are adaptable to the individual load case and offer high, mass-specific mechanical performance. However, relatively high safety factors must be applied due to the large deviations in the structural parameters. An improved understanding of the structural behavior is needed to reduce those factors, which can be obtained by utilizing an integrated fiber-optical sensor. The described methods take advantage of the high spatial resolution of a sensor system operating by the Rayleigh backscatter principle. The entire strain fields of several generic CFW samples were measured in various load scenarios, visualized in their spatial contexts, and analyzed by FEM-assisted methods. The structural response was statistically described and compared with the ideal load distribution to iteratively derive the actual load introduction and prove the importance of the sensor integration. The paper describes methods for the sensor implementation, interpretation and the calibration of structural data.", "issn" : "0263-8223", "doi" : "10.1016/j.compstruct.2022.115558", "bibtexKey": "MINDERMANN2022115558" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/261f2bd46c2be89c3ceca7747b7a19864/itke", "tags" : [ "coreless","gil","mindermann","gresser","knippers","2022","engineering","filament","winding,","structural","integration,","itke","from:petraheim","composite","sensor","fiber-optical","sensor,","kamimura","behavior" ], "intraHash" : "61f2bd46c2be89c3ceca7747b7a19864", "interHash" : "75804167cdd1e6a8170e690c2ed2de3c", "label" : "Implementation of Fiber-Optical Sensors into Coreless Filament-Wound Composite Structures", "user" : "itke", "description" : "", "date" : "2022-04-22 12:25:25", "changeDate" : "2022-04-22 10:25:25", "count" : 6, "pub-type": "article", "journal": "Composite Structures", "year": "2022", "url": "https://www.sciencedirect.com/science/article/pii/S0263822322003464", "author": [ "Pascal Mindermann","Marta Gil Pérez","Naoki Kamimura","Jan Knippers","Götz T. Gresser" ], "authors": [ {"first" : "Pascal", "last" : "Mindermann"}, {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Naoki", "last" : "Kamimura"}, {"first" : "Jan", "last" : "Knippers"}, {"first" : "Götz T.", "last" : "Gresser"} ], "volume": "290","pages": "115558","abstract": "Fiber-reinforced composite structures manufactured by coreless filament winding (CFW) are adaptable to the individual load case and offer high, mass-specific mechanical performance. However, relatively high safety factors must be applied due to the large deviations in the structural parameters. An improved understanding of the structural behavior is needed to reduce those factors, which can be obtained by utilizing an integrated fiber-optical sensor. The described methods take advantage of the high spatial resolution of a sensor system operating by the Rayleigh backscatter principle. The entire strain fields of several generic CFW samples were measured in various load scenarios, visualized in their spatial contexts, and analyzed by FEM-assisted methods. The structural response was statistically described and compared with the ideal load distribution to iteratively derive the actual load introduction and prove the importance of the sensor integration. The paper describes methods for the sensor implementation, interpretation and the calibration of structural data.", "issn" : "0263-8223", "doi" : "10.1016/j.compstruct.2022.115558", "bibtexKey": "MINDERMANN2022115558" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2d3f646b6e22ec4de0db4db2ec9404769/petraheim", "tags" : [ "2022","Coreless","Fibre-polymer","Flax","Freiburg","Gil","Integrative","LivMatS","Material","Mechanical","Robotic","architecture","characterisation","composites","design","engineering","fabrication","fibres","filament","filament-wound","guo","integrative","itke","knippers","pavilion","structural","testing","winding" ], "intraHash" : "d3f646b6e22ec4de0db4db2ec9404769", "interHash" : "ab32618f3b8030df366fcb11b51a198b", "label" : "Integrative material and structural design methods for natural fibres filament-wound composite structures: The LivMatS pavilion", "user" : "petraheim", "description" : "", "date" : "2022-04-08 09:54:19", "changeDate" : "2022-04-19 12:06:35", "count" : 6, "pub-type": "article", "journal": "Material & Design","publisher":"ELSEVIER SCI LTD", "year": "2022", "url": "", "author": [ "Marta Gil Pérez","Yanan Guo","Jan Knippers" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Yanan", "last" : "Guo"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "217","abstract": "Coreless filament winding (CFW) is a novel fabrication technique that utilises fibre-polymer composite materials to efficiently produce filament wound structures in architecture while reducing manufacturing waste. Previous projects have been successfully built with glass and carbon fibre, proving their potential for lightweight construction systems. However, in order to move towards more sustainable architecture, it is crucial to consider replacing carbon fibre\u2019s high environmental impact with other material systems, such as natural fibre. This paper evaluates several fibres, resin systems, and their required CFW fabrication adjustments towards designing and fabricating a bio-composite structure: the LivMatS Pavilion. The methods integrate structural design loops with material evaluation and characterisation, including small-scale and large-scale structural testing at progressive stages. The results demonstrate the interactive decision-making process that combines material characterisation with structural simulation feedback, leveraged to evaluate and optimise the structural design. The built pavilion is proof of the first successful coreless filament wound sustainable natural fibres design, and the developed methods and findings open up further research directions for future applications.", "language" : "engl", "doi" : "https://doi.org/10.1016/j.matdes.2022.110624", "bibtexKey": "gilperez2022integrative" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2d3f646b6e22ec4de0db4db2ec9404769/itke", "tags" : [ "Robotic","LivMatS","Gil","knippers","pavilion","2022","engineering","Material","filament","characterisation","itke","from:petraheim","Mechanical","winding","testing","fabrication","Flax","Freiburg","guo","filament-wound","fibres","Fibre-polymer","integrative","design","structural","Integrative","composites","Coreless","architecture" ], "intraHash" : "d3f646b6e22ec4de0db4db2ec9404769", "interHash" : "ab32618f3b8030df366fcb11b51a198b", "label" : "Integrative material and structural design methods for natural fibres filament-wound composite structures: The LivMatS pavilion", "user" : "itke", "description" : "", "date" : "2022-04-08 09:54:19", "changeDate" : "2022-04-08 07:54:19", "count" : 6, "pub-type": "article", "journal": "Material & Design","publisher":"ELSEVIER SCI LTD", "year": "2022", "url": "", "author": [ "Marta Gil Pérez","Yanan Guo","Jan Knippers" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Yanan", "last" : "Guo"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "217","abstract": "Coreless filament winding (CFW) is a novel fabrication technique that utilises fibre-polymer composite materials to efficiently produce filament wound structures in architecture while reducing manufacturing waste. Previous projects have been successfully built with glass and carbon fibre, proving their potential for lightweight construction systems. However, in order to move towards more sustainable architecture, it is crucial to consider replacing carbon fibre\u2019s high environmental impact with other material systems, such as natural fibre. This paper evaluates several fibres, resin systems, and their required CFW fabrication adjustments towards designing and fabricating a bio-composite structure: the LivMatS Pavilion. The methods integrate structural design loops with material evaluation and characterisation, including small-scale and large-scale structural testing at progressive stages. The results demonstrate the interactive decision-making process that combines material characterisation with structural simulation feedback, leveraged to evaluate and optimise the structural design. The built pavilion is proof of the first successful coreless filament wound sustainable natural fibres design, and the developed methods and findings open up further research directions for future applications.", "language" : "engl", "doi" : "https://doi.org/10.1016/j.matdes.2022.110624", "bibtexKey": "gilperez2022integrative" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/27e2ca5a3aff35c16bb99676c359876b3/petraheim", "tags" : [ "(FEA)","(FRP)","2022","Coreless","Fiber-reinforced","Finite","Lamination","analysis","architecture","buckling","components","design","element","engineering","fiber","filament","gil","guo","itke","knippers","layup","methodology","optimization","parameters","polymer","serhat","structural","winding","wound" ], "intraHash" : "7e2ca5a3aff35c16bb99676c359876b3", "interHash" : "4f98bbc60a12e811d97756c7daf76b15", "label" : "A design methodology for fiber layup optimization of filament wound structural components", "user" : "petraheim", "description" : "", "date" : "2022-03-02 09:39:23", "changeDate" : "2022-04-22 10:34:03", "count" : 6, "pub-type": "article", "journal": "Structures","publisher":"ELSEVIER SCI LTD", "year": "2022", "url": "", "author": [ "Yanan Guo","Marta Gil Pérez","Gokhan Serhat","Jan Knippers" ], "authors": [ {"first" : "Yanan", "last" : "Guo"}, {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Gokhan", "last" : "Serhat"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "38","pages": "1125-1136","abstract": "The applications of fiber-reinforced polymer (FRP) composites extend rapidly along with the development of new manufacturing techniques. However, due to the complexities introduced by the material and fabrication processes, the application of conventional structural design methods for construction members has been significantly challenging. This paper presents an alternative methodology to find optimum fiber layups for a given tube-shape geometry via a graphical optimization strategy based on structural performance requirements. The proposed technique employs simplified shell element models based on classical lamination theory (CLT) to avoid explicit fiber modeling in the FEA simulations. Lamination parameters are utilized to generate the reduced stiffness matrices for continuous multi-layer FRP lamination. The fiber layup of the component is retrieved from the optimal lamination parameters that maximize the structural performance. The case study results demonstrate that the developed method provides compact solutions, linking the structural design requirements with optimal fiber orientations and volumetric proportions. In addition, the determined solutions can be interpreted directly by the winding fabrication settings.", "language" : "eng", "doi" : "https://doi.org/10.1016/j.istruc.2022.02.048", "bibtexKey": "guo2022design" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/250bfad0158ba67cad75c5d02775cfd63/itke", "tags" : [ "2022","Balangé","architecture","bischoff","collaborative","composite","computational","coreless","coreless-wound","digital","engineering","evaluation","fibre-polymer","filament","framework","from:petraheim","förster","gienger","gil","gresser","guo","hügle","itke","kannenberg","knippers","menges","middendorf","minderman","model","object","schwieger","structural","structures","tarin","winding","workflow","zechmeister" ], "intraHash" : "50bfad0158ba67cad75c5d02775cfd63", "interHash" : "d85bc6f54f1018989c61c91bfe7caa86", "label" : "Computational co-design framework for coreless wound fibre\u2013polymer composite structures", "user" : "itke", "description" : "", "date" : "2022-03-01 16:39:54", "changeDate" : "2022-03-02 08:40:10", "count" : 8, "pub-type": "article", "journal": "Journal of Computational Design and Engineering", "year": "2022", "url": "", "author": [ "Marta Gil Pérez","Christoph Zechmeister","Fabian Kannenberg","P. Mindermann","L. Balangé","Yanan Guo","S. Hügle","A. Gienger","D. Forster","Manfred Bischoff","C. Tarín","P. Middendorf","V. Schwieger","Götz T. Gresser","Achim Menges","Jan Knippers" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Christoph", "last" : "Zechmeister"}, {"first" : "Fabian", "last" : "Kannenberg"}, {"first" : "P.", "last" : "Mindermann"}, {"first" : "L.", "last" : "Balangé"}, {"first" : "Yanan", "last" : "Guo"}, {"first" : "S.", "last" : "Hügle"}, {"first" : "A.", "last" : "Gienger"}, {"first" : "D.", "last" : "Forster"}, {"first" : "Manfred", "last" : "Bischoff"}, {"first" : "C.", "last" : "Tarín"}, {"first" : "P.", "last" : "Middendorf"}, {"first" : "V.", "last" : "Schwieger"}, {"first" : "Götz T.", "last" : "Gresser"}, {"first" : "Achim", "last" : "Menges"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "9","number": "2","pages": "310\u2013329","abstract": "In coreless filament winding, resin-impregnated fibre filaments are wound around anchor points without an additional mould. The final geometry of the produced part results from the interaction of fibres in space and is initially undetermined. Therefore, the success of large-scale coreless wound fibre composite structures for architectural applications relies on the reciprocal collaboration of simulation, fabrication, quality evaluation, and data integration domains. The correlation of data from those domains enables the optimization of the design towards ideal performance and material efficiency. This paper elaborates on a computational co-design framework to enable new modes of collaboration for coreless wound fibre\u2013polymer composite structures. It introduces the use of a shared object model acting as a central data repository that facilitates interdisciplinary data exchange and the investigation of correlations between domains. The application of the developed computational co-design framework is demonstrated in a case study in which the data are successfully mapped, linked, and analysed across the different fields of expertise. The results showcase the framework\u2019s potential to gain a deeper understanding of large-scale coreless wound filament structures and their fabrication and geometrical implications for design optimization.", "language" : "eng", "doi" : "https://doi.org/10.1093/jcde/qwab081", "bibtexKey": "gilperez2022computational" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/250bfad0158ba67cad75c5d02775cfd63/petraheim", "tags" : [ "2022","Balangé","architecture","bischoff","collaborative","composite","computational","coreless","coreless-wound","digital","engineering","evaluation","fibre-polymer","filament","framework","förster","gienger","gil","gresser","guo","hügle","itke","kannenberg","knippers","menges","middendorf","minderman","model","object","schwieger","structural","structures","tarin","winding","workflow","zechmeister" ], "intraHash" : "50bfad0158ba67cad75c5d02775cfd63", "interHash" : "d85bc6f54f1018989c61c91bfe7caa86", "label" : "Computational co-design framework for coreless wound fibre\u2013polymer composite structures", "user" : "petraheim", "description" : "", "date" : "2022-03-01 16:39:54", "changeDate" : "2022-03-02 08:39:44", "count" : 8, "pub-type": "article", "journal": "Journal of Computational Design and Engineering", "year": "2022", "url": "", "author": [ "Marta Gil Pérez","Christoph Zechmeister","Fabian Kannenberg","P. Mindermann","L. Balangé","Yanan Guo","S. Hügle","A. Gienger","D. Forster","Manfred Bischoff","C. Tarín","P. Middendorf","V. Schwieger","Götz T. Gresser","Achim Menges","Jan Knippers" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Christoph", "last" : "Zechmeister"}, {"first" : "Fabian", "last" : "Kannenberg"}, {"first" : "P.", "last" : "Mindermann"}, {"first" : "L.", "last" : "Balangé"}, {"first" : "Yanan", "last" : "Guo"}, {"first" : "S.", "last" : "Hügle"}, {"first" : "A.", "last" : "Gienger"}, {"first" : "D.", "last" : "Forster"}, {"first" : "Manfred", "last" : "Bischoff"}, {"first" : "C.", "last" : "Tarín"}, {"first" : "P.", "last" : "Middendorf"}, {"first" : "V.", "last" : "Schwieger"}, {"first" : "Götz T.", "last" : "Gresser"}, {"first" : "Achim", "last" : "Menges"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "9","number": "2","pages": "310\u2013329","abstract": "In coreless filament winding, resin-impregnated fibre filaments are wound around anchor points without an additional mould. The final geometry of the produced part results from the interaction of fibres in space and is initially undetermined. Therefore, the success of large-scale coreless wound fibre composite structures for architectural applications relies on the reciprocal collaboration of simulation, fabrication, quality evaluation, and data integration domains. The correlation of data from those domains enables the optimization of the design towards ideal performance and material efficiency. This paper elaborates on a computational co-design framework to enable new modes of collaboration for coreless wound fibre\u2013polymer composite structures. It introduces the use of a shared object model acting as a central data repository that facilitates interdisciplinary data exchange and the investigation of correlations between domains. The application of the developed computational co-design framework is demonstrated in a case study in which the data are successfully mapped, linked, and analysed across the different fields of expertise. The results showcase the framework\u2019s potential to gain a deeper understanding of large-scale coreless wound filament structures and their fabrication and geometrical implications for design optimization.", "language" : "eng", "doi" : "https://doi.org/10.1093/jcde/qwab081", "bibtexKey": "gilperez2022computational" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2c1e692f333e36ff5d124056709ae5d24/itke", "tags" : [ "2022","Knippers","Magna","analysis","architecture","biennale","building","coreless","design","element","engineering","fabricated","fibre","filament","finite","from:petraheim","früh","gil","hybrid","integrative","itke","maison","structural","system","timber-fibre","venice","winding" ], "intraHash" : "c1e692f333e36ff5d124056709ae5d24", "interHash" : "013805bc838c38c3cd858110b963b76d", "label" : "Integrative structural design of a timber-fibre hybrid building system fabricated through coreless filament winding: Maison Fibre", "user" : "itke", "description" : "", "date" : "2022-02-01 17:08:14", "changeDate" : "2022-02-03 14:07:37", "count" : 4, "pub-type": "article", "journal": "Journal of Building Engineering","publisher":"ELSEVIER SCI LTD", "year": "2022", "url": "", "author": [ "Marta Gil Pérez","Nikolas Früh","Riccardo La Magna","Jan Knippers" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Nikolas", "last" : "Früh"}, {"first" : "Riccardo", "last" : "La Magna"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "49","abstract": "Coreless filament winding is a robotic fabrication technique in which conventional filament winding is modified to reduce the core material to its minimum. This method was showcased and developed through a series of pavilions demonstrating its potential to create lightweight structures. The latest project, Maison Fibre, goes one step further and adapts the fabrication into a hybrid structure combining fibre-polymer composites (FPC) with laminated veneer lumber (LVL) to allow for walkability. The result is the first multi-storey building system fabricated with this novel technique. During the integrative design process of the slab system, the optimum fibre layup was negotiated between the timber support span, load induction, boundary conditions, and material amount required. A total of four iterations of the hybrid component were load tested and compared with the maximum enveloped forces resulting from the global structural simulation. The full-scale load tests were used to calibrate the refined structural simulation of the slab components. The experimental process allowed for material reduction and validated the structural system's capability to withstand the design forces. In addition, the fibre layup was tailored and load adapted for the non-tested wall and slab components of the installation using the test results and achieving further material optimization. This publication describes the integrative design process of the hybrid slab system from initial concepts to the iterative optimization of the structural system, demonstrating its potential for future applications.", "language" : "eng", "bibtexKey": "gilperez2022integrative" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2c1e692f333e36ff5d124056709ae5d24/petraheim", "tags" : [ "2022","Knippers","Magna","analysis","architecture","biennale","building","coreless","design","element","engineering","fabricated","fibre","filament","finite","früh","gil","hybrid","integrative","itke","maison","structural","system","timber-fibre","venice","winding" ], "intraHash" : "c1e692f333e36ff5d124056709ae5d24", "interHash" : "013805bc838c38c3cd858110b963b76d", "label" : "Integrative structural design of a timber-fibre hybrid building system fabricated through coreless filament winding: Maison Fibre", "user" : "petraheim", "description" : "", "date" : "2022-01-31 13:52:10", "changeDate" : "2022-02-03 14:02:27", "count" : 4, "pub-type": "article", "journal": "Journal of Building Engineering","publisher":"ELSEVIER SCI LTD", "year": "2022", "url": "", "author": [ "Marta Gil Pérez","Nikolas Früh","Riccardo La Magna","Jan Knippers" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Nikolas", "last" : "Früh"}, {"first" : "Riccardo", "last" : "La Magna"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "49","abstract": "Coreless filament winding is a robotic fabrication technique in which conventional filament winding is modified to reduce the core material to its minimum. This method was showcased and developed through a series of pavilions demonstrating its potential to create lightweight structures. The latest project, Maison Fibre, goes one step further and adapts the fabrication into a hybrid structure combining fibre-polymer composites (FPC) with laminated veneer lumber (LVL) to allow for walkability. The result is the first multi-storey building system fabricated with this novel technique. During the integrative design process of the slab system, the optimum fibre layup was negotiated between the timber support span, load induction, boundary conditions, and material amount required. A total of four iterations of the hybrid component were load tested and compared with the maximum enveloped forces resulting from the global structural simulation. The full-scale load tests were used to calibrate the refined structural simulation of the slab components. The experimental process allowed for material reduction and validated the structural system's capability to withstand the design forces. In addition, the fibre layup was tailored and load adapted for the non-tested wall and slab components of the installation using the test results and achieving further material optimization. This publication describes the integrative design process of the hybrid slab system from initial concepts to the iterative optimization of the structural system, demonstrating its potential for future applications.", "language" : "eng", "bibtexKey": "gilperez2022integrative" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/278d62eb6880f1a0d1dfe355d95bbb4f4/petraheim", "tags" : [ "(FEA)","2021","Buckling","Carbon","Fibre-polymer","Finite","Lightweight","Mechanical","analysis","architecture","buga","composite","composites","coreless","design","dome","element","engineering","fibre","filament","filament-wound","gil","heilbronn","itke","knippers","koslowski","modular","pavilion","perez","rongen","structural","structure","testing","winding" ], "intraHash" : "78d62eb6880f1a0d1dfe355d95bbb4f4", "interHash" : "a43de0b20f2279497a39731c7b6a5c08", "label" : "Structural design assisted by testing for modular coreless filament-wound composites: The BUGA Fibre Pavilion", "user" : "petraheim", "description" : "", "date" : "2022-01-27 14:35:58", "changeDate" : "2022-02-03 13:47:12", "count" : 6, "pub-type": "article", "journal": "Construction and Building Materials", "year": "2021", "url": "", "author": [ "Marta Gil Pérez","Bas Rongen","Valentin Koslowski","Jan Knippers" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Bas", "last" : "Rongen"}, {"first" : "Valentin", "last" : "Koslowski"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "301","abstract": "The BUGA Fibre Pavilion was built in 2019 in the Bundesgartenschau (National Gardening exhibition) at Heilbronn, Germany. The pavilion consists of modular fibre-polymer composite components made out of glass and carbon fibres with an epoxy resin matrix. The fabrication technique employed, called coreless filament winding (CFW), is a variant from conventional filament winding where the core is reduced to minimum frame support. The fibres are wound between these frames, freely spanning and creating the resulting geometry through fibre interaction. For the structural design of these components, conventional modelling and engineering methods were not sufficient as the system cannot be adequately characterized in the early stage. Therefore, a more experimental design approach is proposed for the BUGA Fibre Pavilion, where different levels of detailing and abstraction in the FE simulations are combined with prototyping and structural testing. This paper shows the procedure followed for the design and validation of the structural fibre components. In this process, the simulations are used as a design tool rather than a way to predict failure, while mechanical testing served for the verification and validation of the structural capacity.", "language" : "eng", "doi" : "https://doi.org/10.1016/j.conbuildmat.2021.124303", "bibtexKey": "gilperez2021structural" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/278d62eb6880f1a0d1dfe355d95bbb4f4/itke", "tags" : [ "Finite","modular","knippers","pavilion","engineering","2021","analysis","Carbon","filament","itke","from:petraheim","Mechanical","winding","testing","(FEA)","fibre","buga","filament-wound","structurestructural","koslowski","coreless","Fibre-polymer","Lightweight","rongen","perez","heilbronn","dome","design","composite","composites","element","Buckling","architecture" ], "intraHash" : "78d62eb6880f1a0d1dfe355d95bbb4f4", "interHash" : "a43de0b20f2279497a39731c7b6a5c08", "label" : "Structural design assisted by testing for modular coreless filament-wound composites: The BUGA Fibre Pavilion", "user" : "itke", "description" : "", "date" : "2022-01-27 14:35:58", "changeDate" : "2022-01-27 13:35:58", "count" : 6, "pub-type": "article", "journal": "Construction and Building Materials", "year": "2021", "url": "", "author": [ "Marta Gil Pérez","Bas Rongen","Valentin Koslowski","Jan Knippers" ], "authors": [ {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Bas", "last" : "Rongen"}, {"first" : "Valentin", "last" : "Koslowski"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "301","abstract": "The BUGA Fibre Pavilion was built in 2019 in the Bundesgartenschau (National Gardening exhibition) at Heilbronn, Germany. The pavilion consists of modular fibre-polymer composite components made out of glass and carbon fibres with an epoxy resin matrix. The fabrication technique employed, called coreless filament winding (CFW), is a variant from conventional filament winding where the core is reduced to minimum frame support. The fibres are wound between these frames, freely spanning and creating the resulting geometry through fibre interaction. For the structural design of these components, conventional modelling and engineering methods were not sufficient as the system cannot be adequately characterized in the early stage. Therefore, a more experimental design approach is proposed for the BUGA Fibre Pavilion, where different levels of detailing and abstraction in the FE simulations are combined with prototyping and structural testing. This paper shows the procedure followed for the design and validation of the structural fibre components. In this process, the simulations are used as a design tool rather than a way to predict failure, while mechanical testing served for the verification and validation of the structural capacity.", "language" : "eng", "doi" : "https://doi.org/10.1016/j.conbuildmat.2021.124303", "bibtexKey": "gilperez2021structural" } ] }