{ "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/20ef15dba4aab4c6ab2a46269a05f990f/itke", "tags" : [ "segmented","develpment","engineering","shell","system","structural","itke","2025","timber","bechert" ], "intraHash" : "0ef15dba4aab4c6ab2a46269a05f990f", "interHash" : "9da2d51483d44283efd76fa966ca6884", "label" : "Structural Development of Semented Timber Shell Systems", "user" : "itke", "description" : "", "date" : "2026-01-13 16:31:40", "changeDate" : "2026-01-13 16:32:04", "count" : 2, "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": "2025", "url": "", "author": [ "Simon Bechert" ], "authors": [ {"first" : "Simon", "last" : "Bechert"} ], "volume": "51","pages": "349","abstract": "In response to the growing global challenges of climate change, resource scarcity, and urbanisation, there is an increasing demand for sustainable and material-efficient building systems. Segmented timber shell systems offer a promising solution by combining modularity,structural lightness, and the efficient use of renewable materials\r\nwith advanced digital design and fabrication technologies.\r\nThis dissertation develops an integrative structural design methodology to advance segmented timber shells as viable solutions for large-span architecture.\r\nChapter one introduces the research motivation and context,establishing the relevance of segmented timber shells as a future-oriented building system. Chapter two reviews the state of the art, tracing the evolution of shell structures and highlighting the potential of modular, lightweight timber construction within\r\nsustainable architecture. Segmented timber shells synergise these fields as a contemporary alternative in the context of an evolving built environment.\r\nChapter three formulates three Research Objectives (ROs) addressing key challenges in the design, engineering, and construction of segmented timber shells. These objectives form the basis for the Research Methods (RM1\u2013RM3) outlined in chapter four,which translate them into fundamental developments and innovations\r\nfor integrative structural design of segmented timber shell systems.\r\nThe core contributions are documented in peer-reviewed publications, each supported by full-scale demonstrators: the ITECH Research Demonstrator 2015\u201316, the Urbach Tower, the BUGA Wood Pavilion, and the livMatS Biomimetic Shell. Chapter five summarises these publications and their contributions to the\r\noverarching research framework.Chapter six discusses the research results (RR1\u2013RR3), demonstrating the structural viability, life cycle performance, and industrial scalability of segmented timber shells. The work shows how interdisciplinary co-design, performance-driven structural assessment, nd automated prefabrication strategies enable the realisation of modular, lightweight timber shell structures.\r\nFinally, chapter seven concludes with a critical reflection on the contributions and limitations of the research and outlines the future potential of segmented timber shells in large-scale architectural applications, bridging the gap between experimental\r\nresearch and construction practice.", "isbn" : "978-3-922302-51-3", "language" : "eng", "bibtexKey": "bechert2025structural" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/20a72d1180d9d9ffdbbd3f7b33ce9a61b/itke", "tags" : [ "Robotic","Optimisation","shells","göbel","Structural","knippers","engineering","Plate","structure","system","itke","fabrication","menges","aicher","Lightweight","Modular","schlopschnat","Form-finding","design","Integrative","2025","Segmented","timber","Computational","bechert" ], "intraHash" : "0a72d1180d9d9ffdbbd3f7b33ce9a61b", "interHash" : "fa29dda885c328adf06d4704f1fc70ec", "label" : "livMatS biomimetic shell: Structural advancements of segmented timber shells towards permanent building constructions", "user" : "itke", "description" : "", "date" : "2025-06-25 14:38:58", "changeDate" : "2025-06-25 14:38:58", "count" : 6, "pub-type": "article", "journal": "Structures","publisher":"Elsevier", "year": "2025", "url": "", "author": [ "Simon Bechert","Christoph Schlopschnat","Monika Göbel","Simon Aicher","Achim Menges","Jan Knippers" ], "authors": [ {"first" : "Simon", "last" : "Bechert"}, {"first" : "Christoph", "last" : "Schlopschnat"}, {"first" : "Monika", "last" : "Göbel"}, {"first" : "Simon", "last" : "Aicher"}, {"first" : "Achim", "last" : "Menges"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "79","pages": "109524","abstract": "Segmented timber shells (STS) represent an emerging modular system for lightweight, free-form architecture. While prior applications have largely been limited to temporary demonstrators, this paper presents the livMatS Biomimetic Shell\u2014the first permanent, fully functioning building realised using a segmented timber shell system \u2014marking a major step toward scalable and long-term architectural integration. The project demonstrates a holistic, digitally driven approach that integrates co-design across architecture, engineering, and robotic fabrication, in close collaboration with industry partners. The research applies an integrative structural design methodology, combining parametric shape analysis and advanced finite element methods to optimise the shell\u2019s form, segmentation, and structural performance. A central innovation is the refined hollow timber cassette system, which reduces material volume and structural weight while enabling insulation integration and structural adaptability. Additional contributions include a bifurcated shell geometry that incorporates a skylight and an innovative weather-responsive shading system. As a full-scale scientific demonstrator, the livMatS Biomimetic Shell positions STS as a viable, sustainable, and structurally robust solution for contemporary long-span timber architecture.", "language" : "eng", "doi" : "https://doi.org/10.1016/j.istruc.2025.109524", "bibtexKey": "bechert2025livmats" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2a3314a2930f8c4c5750746112105f0c1/itke", "tags" : [ "modular","relocation","göbel","gorokhova","segmented","knippers","engineering","shell","circular","structure","itke","fabrication","menges","aicher","robotic","lightweight","assessment","balangé","structural","2025","construction","schwieger","timber","bechert" ], "intraHash" : "a3314a2930f8c4c5750746112105f0c1", "interHash" : "3bcb77135d3940acf326ac917532f269", "label" : "Segmented Timber Shells for Circular Construction: Relocation, Structural Assessment, and Robotic Fabrication of a Modular, Lightweight Timber Structure", "user" : "itke", "description" : "", "date" : "2025-06-11 11:46:41", "changeDate" : "2025-06-11 11:46:41", "count" : 7, "pub-type": "article", "journal": "Buildings", "year": "2025", "url": "https://www.mdpi.com/2075-5309/15/11/1857", "author": [ "Simon Bechert","Simon Aicher","Lyudmila Gorokhova","Laura Balangé","Monika Göbel","Volker Schwieger","Achim Menges","Jan Knippers" ], "authors": [ {"first" : "Simon", "last" : "Bechert"}, {"first" : "Simon", "last" : "Aicher"}, {"first" : "Lyudmila", "last" : "Gorokhova"}, {"first" : "Laura", "last" : "Balangé"}, {"first" : "Monika", "last" : "Göbel"}, {"first" : "Volker", "last" : "Schwieger"}, {"first" : "Achim", "last" : "Menges"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "15","number": "11","abstract": "Segmented timber shells present a novel building system that utilizes modular, planar building components to create lightweight free-form structures in architecture. Recent advancements in the research field of segmented timber shells pursue, among others, two fundamentally opposing research objectives. 1. The modularity of their building components facilitates the reuse of such structures in response to a changing built environment. 2. Advanced developments aim at establishing segmented timber shells as permanent building structures for sustainable architecture. This paper addresses the first research objective through the successful relocation of the BUGA Wood Pavilion in the context of the proposed methodology of Co-Design for circular construction. The methods and results involve integrative design and engineering processes and advanced quality assessment methods, including structural, geodetic, and physical properties for modular timber constructions. The BUGA Wood Pavilion serves as a building demonstrator for the presented research on segmented shells as lightweight, reusable, and durable timber structures.", "issn" : "2075-5309", "article-number" : "1857", "doi" : "10.3390/buildings15111857", "bibtexKey": "buildings15111857" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/260ff56edbb40faf99d831b91454bb39d/itke", "tags" : [ "multi-storey","2024","building","engineering","integrative","system","design","krtschil","structural","itke","timber","holzbau" ], "intraHash" : "60ff56edbb40faf99d831b91454bb39d", "interHash" : "6815cf98e08f4c08f85fcadfd279b9eb", "label" : "Integrative Structural Design for a Multi-Storey Timber Building System", "user" : "itke", "description" : "", "date" : "2025-02-05 15:50:15", "changeDate" : "2025-11-04 16:30:55", "count" : 3, "pub-type": "phdthesis", "series": "Forschungsberichte aus dem Institut für Tragkonstruktionen und konstruktives Entwerfen, Universität Stuttgart","publisher":"Institut für Tragkonstruktionen und Konstruktives Entwerfen, Universität Stuttgart", "year": "2024", "url": "", "author": [ "Anna Krtschil" ], "authors": [ {"first" : "Anna", "last" : "Krtschil"} ], "number": "50","pages": "73","abstract": "Changes in the building industry are required regarding the current challenges. Design methods, building systems as well as fabrication processes need to be rethought to reach sustainable solutions. Integrative design methods allow for comprehensive solutions that consider several disciplines from the early design phase. Timber, as a renewable resource allows for sustainable building systems and digital fabrication.\r\nThe aim of this thesis is the integration of structural requirements and simulation in the early design phase of multi-storey timber construction. The developments are divided into the design methods, the timber building system as well as their application and evaluation. The methods are differentiated between feedback-based and structurally informed design methods.\r\nThe building system design is based on the iterative synthesis of developments for the cross-section, the connections and the arrangement of the system elements considering architectural, engineering and fabrication requirements. Two timber building systems, one solid and one hollow, are developed and compared.\r\nThe methodology is applied and evaluated through the design of a building demonstrator.\r\nThe first two chapters of the thesis explain the motivation and challenges and situate the research within the context of integrated structural design and multi-storey timber construction.\r\nThe third chapter contains the publications about the methodology and systems and their application and evaluation. Chapter four and five summarize the research, draw conclusions from the developments and provide an outlook for future research within the context of integrative structural design in multi-storey timber construction.", "isbn" : "978-3-922302-50-6", "language" : "eng", "doi" : "https://doi.org/10.1016/j.istruc.2025.108296", "bibtexKey": "krtschil2024integrative" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2f191c7110895a702714296cc336b5cce/itke", "tags" : [ "mass","leistner","2024","acoustic","knippers","müller","engineering","TMD","dampers","mahler","slab","tuned","krtschil","structural","itke","wooden","timber","behaviour" ], "intraHash" : "f191c7110895a702714296cc336b5cce", "interHash" : "ac321ca07cb3f15b848067fc9fe8331b", "label" : "Structural and acoustic behavior of a timber slab with wooden tuned mass dampers", "user" : "itke", "description" : "", "date" : "2024-10-17 14:04:48", "changeDate" : "2024-10-17 14:04:48", "count" : 5, "pub-type": "article", "journal": "Journal of Low Frequency Noise, Vibration and Active Control","publisher":"Sage", "year": "2024", "url": "", "author": [ "Theresa Müller","Anna Krtschil","Michael Mahler","Jan Knippers","Philipp Leistner" ], "authors": [ {"first" : "Theresa", "last" : "Müller"}, {"first" : "Anna", "last" : "Krtschil"}, {"first" : "Michael", "last" : "Mahler"}, {"first" : "Jan", "last" : "Knippers"}, {"first" : "Philipp", "last" : "Leistner"} ], "abstract": "The increasing use of timber in multi-story construction has highlighted challenges related to the vibration behavior of timber floor slabs, affecting both structural and acoustic performance. Floor vibrations between 0 and 20 Hz and structure-borne sound especially between 50 and 100 Hz are impairing the user comfort and serviceability. This paper investigates a mono-material approach using wooden tuned mass dampers (TMDs) to reduce these vibrations in timber slabs, particularly in buildings with long spans. Eigenmodes in relevant frequency ranges are first identified, followed by the separate design and interdisciplinary integration of TMDs for structural and acoustic performance. The study integrates acoustic and structural design requirements through an interdisciplinary process, employing both experimental and numerical models. Results demonstrate that wooden TMDs can address both disciplines and reduce deflection in timber slabs and improve structure-borne and low-frequency sound transmission.", "language" : "eng", "issn" : "ISSN: 1461-3484", "doi" : "https://doi.org/10.1177/14613484241286", "bibtexKey": "muller2024structural" } , { "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/201b69a6f520d1f671fd27c3bdbbba0fd/itke", "tags" : [ "chen","development","multi-storey","wagner","building","knippers","2022","engineering","amtsberg","shah","design","krtschil","structural","itke","from:petraheim","construction","timber","menges","orozco","bechert","connections" ], "intraHash" : "01b69a6f520d1f671fd27c3bdbbba0fd", "interHash" : "8f377bd13546b30c8600eb5b63dc8abe", "label" : "Structural development of a novel punctually supported timber\r\nbuilding system for multi-storey construction", "user" : "itke", "description" : "", "date" : "2023-01-25 14:57:05", "changeDate" : "2023-01-25 13:57:05", "count" : 9, "pub-type": "article", "journal": "Journal of Building Engineering", "year": "2022", "url": "", "author": [ "Anna Krtschil","Luis Orozco","Simon Bechert","Hans Jakob Wagner","Felix Amtsberg","Tzu-Ying Chen","Anand Shah","Achim Menges","Jan Knippers" ], "authors": [ {"first" : "Anna", "last" : "Krtschil"}, {"first" : "Luis", "last" : "Orozco"}, {"first" : "Simon", "last" : "Bechert"}, {"first" : "Hans Jakob", "last" : "Wagner"}, {"first" : "Felix", "last" : "Amtsberg"}, {"first" : "Tzu-Ying", "last" : "Chen"}, {"first" : "Anand", "last" : "Shah"}, {"first" : "Achim", "last" : "Menges"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "58","pages": "104972","abstract": "Though capable of allowing multi-directional spans, timber products such as cross-laminated timber are primarily utilized uni-directionally using linear supports like walls or beam elements. Recent building designs increasingly show punctual supports but with narrow column grid layouts.\r\nSupport beams and narrow grids limit the design space for multi-storey timber buildings. To overcome these design limits, an integrative design concept for punctually supported timber slabs is being developed that allows for large spans and irregular column layouts. Therefore, engineering methods are integrated in the architectural design of the building components, such as plates, columns, and their connections. The developed slab system combines hardwood and softwood materials in a sandwich construction. The plates have a tailored internal topology considering the force flow in the slab. A plate-to-plate connection design is evaluated through\r\nmechanical tests, which also serve as calibration for the global structural model. The research findings are validated through the design and construction of a large scale demonstrator: the ITECH Campus Lab.", "language" : "eng", "doi" : "https://doi.org/10.1016/j.jobe.2022.104972", "bibtexKey": "krtschil2022structural" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2c8c5031bbda02fb0615331ac9b176653/itke", "tags" : [ "chen","development","multi-storey","wagner","building","knippers","2022","engineering","amtsberg","shah","design","krtschil","structural","itke","from:petraheim","construction","timber","menges","orozco","bechert","connections" ], "intraHash" : "c8c5031bbda02fb0615331ac9b176653", "interHash" : "8f377bd13546b30c8600eb5b63dc8abe", "label" : "Structural development of a novel punctually supported timber\r\nbuilding system for multi-storey construction", "user" : "itke", "description" : "", "date" : "2023-01-17 12:47:48", "changeDate" : "2023-01-17 11:47:48", "count" : 9, "pub-type": "article", "journal": "Journal of Building Engineering", "year": "2022", "url": "", "author": [ "Anna Krtschil","LUis Orozco","Simon Bechert","Hans Jakob Wagner","Felix Amtsberg","Tzu-Ying Chen","Anand Shah","Achim Menges","Jan Knippers" ], "authors": [ {"first" : "Anna", "last" : "Krtschil"}, {"first" : "LUis", "last" : "Orozco"}, {"first" : "Simon", "last" : "Bechert"}, {"first" : "Hans Jakob", "last" : "Wagner"}, {"first" : "Felix", "last" : "Amtsberg"}, {"first" : "Tzu-Ying", "last" : "Chen"}, {"first" : "Anand", "last" : "Shah"}, {"first" : "Achim", "last" : "Menges"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "58","pages": "104972","abstract": "Though capable of allowing multi-directional spans, timber products such as cross-laminated timber are primarily utilized uni-directionally using linear supports like walls or beam elements. Recent building designs increasingly show punctual supports but with narrow column grid layouts.\r\nSupport beams and narrow grids limit the design space for multi-storey timber buildings. To overcome these design limits, an integrative design concept for punctually supported timber slabs is being developed that allows for large spans and irregular column layouts. Therefore, engineering methods are integrated in the architectural design of the building components, such as plates, columns, and their connections. The developed slab system combines hardwood and softwood materials in a sandwich construction. The plates have a tailored internal topology considering the force flow in the slab. A plate-to-plate connection design is evaluated through\r\nmechanical tests, which also serve as calibration for the global structural model. The research findings are validated through the design and construction of a large scale demonstrator: the ITECH Campus Lab.", "language" : "eng", "doi" : "https://doi.org/10.1016/j.jobe.2022.104972", "bibtexKey": "krtschil2022structural" } , { "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/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/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/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/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/23f02b3f030fc21cf5da046fbb43103e9/itke", "tags" : [ "buga","koslowski","rationalisation","rongen","gil","heilbronn","engineering","dome","structural","itke","optimisation","from:petraheim","composite","knipperssend:unibiblio","fibre" ], "intraHash" : "3f02b3f030fc21cf5da046fbb43103e9", "interHash" : "c5b6e415516bffd0d0661d29c8d5f334", "label" : "Structural optimisation and rationalisation of the BUGA fibre composite dome", "user" : "itke", "description" : "", "date" : "2020-12-10 09:20:19", "changeDate" : "2020-12-10 08:20:19", "count" : 1, "pub-type": "inproceedings", "booktitle": "Proceedings of IASS Annual Symposia: Form and Force","publisher":"International Association for Shell and Spatial Structures (IASS)", "year": "2019", "url": "", "author": [ "Bas Rongen","Valentin Koslowski","Marta Gil Pérez","Jan Knippers" ], "authors": [ {"first" : "Bas", "last" : "Rongen"}, {"first" : "Valentin", "last" : "Koslowski"}, {"first" : "Marta", "last" : "Gil Pérez"}, {"first" : "Jan", "last" : "Knippers"} ], "editor": [ "C Lazaro","KU Bletzinger","E Onate" ], "editors": [ {"first" : "C", "last" : "Lazaro"}, {"first" : "KU", "last" : "Bletzinger"}, {"first" : "E", "last" : "Onate"} ], "volume": "2019","pages": "1859--1866", "bibtexKey": "rongen2019structural" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2e6315806c65d3303dba32736c849a352/itke", "tags" : [ "polymer","fiber","glass","knippers","engineering","gfrp","lightweight","reinforced","smart","structure","structural","2005","hub","itke","from:petraheim","hwang","park","architecture" ], "intraHash" : "e6315806c65d3303dba32736c849a352", "interHash" : "84087c8ce8136e4539b2f2a5c4f96d73", "label" : "The new developments of smart and lightweight structures with glass fiber reinforced polymer (GFRP) in architecture and structural engineering", "user" : "itke", "description" : "", "date" : "2020-05-22 14:27:38", "changeDate" : "2020-05-22 12:27:38", "count" : 2, "pub-type": "article", "journal": "POAR People & Architects", "year": "2005", "url": "", "author": [ "Don-U Park","Alexander Hub","Kyung-Ju Hwang","Jan Knippers" ], "authors": [ {"first" : "Don-U", "last" : "Park"}, {"first" : "Alexander", "last" : "Hub"}, {"first" : "Kyung-Ju", "last" : "Hwang"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "113","pages": "82 -95", "language" : "eng", "bibtexKey": "park2005developments" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/295be3fd3bdc9a7ff1a36fbe4ecaf0327/itke", "tags" : [ "reinforcing","frp","2007","design","structural","itke","from:petraheim","engineering","hwang","park" ], "intraHash" : "95be3fd3bdc9a7ff1a36fbe4ecaf0327", "interHash" : "aa4aea5187bd11ac73877dc8c1e388e3", "label" : "New Reinforcing and Structural Design with FRP", "user" : "itke", "description" : "", "date" : "2020-05-22 14:25:14", "changeDate" : "2020-05-22 12:25:14", "count" : 2, "pub-type": "inproceedings", "booktitle": "Conference Proceedings of The 4th International Seminar of Remodeling Technology","address":"Seoul", "year": "2007", "url": "", "author": [ "Don-U Park","Kyung-Ju Hwang" ], "authors": [ {"first" : "Don-U", "last" : "Park"}, {"first" : "Kyung-Ju", "last" : "Hwang"} ], "editor": [ "Korea Remodeling Association" ], "editors": [ {"first" : "Korea Remodeling", "last" : "Association"} ], "pages": "79 \u2013 90", "language" : "eng", "bibtexKey": "noauthororeditorreinforcing" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/21e615ec87950b9f72049a8222a69a5fe/itke", "tags" : [ "frp","monitoring","knippers","engineering","2009","friedberg","structural","itke","safety","from:petraheim","gabler","bridge" ], "intraHash" : "1e615ec87950b9f72049a8222a69a5fe", "interHash" : "42670e3df682440c57c0f927343ff9f9", "label" : "Monitoring and Structural Safety of FRP Bridges", "user" : "itke", "description" : "", "date" : "2020-05-22 14:24:19", "changeDate" : "2020-05-22 12:24:19", "count" : 2, "pub-type": "inproceedings", "booktitle": "13th International Conference on Structural and Geotechnical Engineering","address":"Cairo \u2013 Egypt", "year": "2009", "url": "", "author": [ "Markus Gabler","Jan Knippers" ], "authors": [ {"first" : "Markus", "last" : "Gabler"}, {"first" : "Jan", "last" : "Knippers"} ], "editor": [ "Department of Structural Engineering Ain Shams University Faculty of Engineering" ], "editors": [ {"first" : "Department of Structural Engineering", "last" : "Ain Shams University Faculty of Engineering"} ], "language" : "eng", "bibtexKey": "gabler2009monitoring" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2b3a4cc8d934e1b348514210472f85a33/itke", "tags" : [ "waimer","2013","magna","knippers","engineering","shell","nature-inspired","optimization","structural","itke","optimisation","from:petraheim","freeform","architecture" ], "intraHash" : "b3a4cc8d934e1b348514210472f85a33", "interHash" : "e8b58afc64283d3e1854def733d09923", "label" : "Nature-inspired structural optimization of freeform shells", "user" : "itke", "description" : "", "date" : "2020-05-22 14:23:59", "changeDate" : "2020-05-22 12:23:59", "count" : 2, "pub-type": "inproceedings", "booktitle": "ICSA 2013- Structures and Architecture","address":"Guimaraes, Portugal", "year": "2013", "url": "", "author": [ "Frédéric Waimer","Riccardo La magna","jan Knippers" ], "authors": [ {"first" : "Frédéric", "last" : "Waimer"}, {"first" : "Riccardo", "last" : "La magna"}, {"first" : "jan", "last" : "Knippers"} ], "language" : "eng", "bibtexKey": "waimer2013natureinspired" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/23134046f55ede846c6e226dd4a338e20/itke", "tags" : [ "2014","architecture","bending-active","deformation","diss","dissertation","elastic","engineering","form-finding","forschungsbericht","from:petraheim","itke","kinetic","lienhard","potential","static","strategies","strategy","structural","structure","system","using" ], "intraHash" : "3134046f55ede846c6e226dd4a338e20", "interHash" : "87cbeea8ea8500fc874b189f34e01137", "label" : "Bending-Active Structures: Form-finding strategies using elastic deformation in static and kinetic systems and the structural potentials therein", "user" : "itke", "description" : "", "date" : "2020-05-22 14:20:04", "changeDate" : "2021-07-09 09:35:17", "count" : 2, "pub-type": "phdthesis", "series": "Forschungsberichte aus dem Institut für Tragkonstruktionen und Konstruktives Entwerfen","publisher":"Stuttgart: Institut für Tragkonstruktionen und Konstruktives Entwerfen","address":"ITKE, Stuttgart, Germany", "year": "2014", "url": "", "author": [ "Julian Lienhard" ], "authors": [ {"first" : "Julian", "last" : "Lienhard"} ], "editor": [ "Jan Knippers" ], "editors": [ {"first" : "Jan", "last" : "Knippers"} ], "volume": "36","abstract": "This thesis aims to provide general insight into form-finding and structural analysis of bending-active structures. The work is based on a case study approach, in which findings from prototypes and commercial building structures become the basis for\r\ngeneralised theoretical investigations. Information is continuously fed back from these case study structures into theoretical research, which creates the basis for overall working methods.\r\nThe behaviour of five investigated structures is found to be Independent of clearly predictable load bearing categories. Their load bearing mechanisms are largely dependent on the boundless variety of topologies and geometrical expressions that may be generated. The work therefore understands active bending as an approach to generating new structural forms, in which common load bearing behaviour is found due to the structures inherently large elasticity and inner stress state.\r\nBased on engineering and historical background, methodological, mechanical and material fundamentals of active-bending are discussed in Chapter B and C. The case study structures introduced in Chapter D open a wide field of active-bending applications, in lightweight building structures. Whether the conclusions drawn\r\nfrom case studies, are generally viable for bending-active structures is then discussed in the core of the work presented in two chapters on Form-Finding (Chapter E) and Structural Behaviour (Chapter F). The chapter on form-finding introduces the working\r\nmethods and modelling environments developed for the present work. The chapter on structural behaviour is concerned with the influence of residual bending stress on the stiffness, scaling and stability of bending-active structures. Based on these findings, generalised design rules for bendingactive structures are highlighted in a concluding chapter.", "isbn" : "978-3-922302-36-0", "language" : "eng", "bibtexKey": "lienhard2014bendingactive" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/226f1ec9390a0245dacb4b4e464bbec11/itke", "tags" : [ "2017","acttively","analysis","bent","diss","dissertation","engineering","form-finding","forschungsbericht","from:petraheim","grid","itke","li","plate","segmental","shell","structural","structure","timber" ], "intraHash" : "26f1ec9390a0245dacb4b4e464bbec11", "interHash" : "b63b7f1729a68f2d49cf78422af4e9de", "label" : "Timber Shell Structures: Form-finding and Structural Analysis of Actively Bent Grid Shells and Segmental Plate Shells", "user" : "itke", "description" : "", "date" : "2020-05-22 14:20:04", "changeDate" : "2020-06-23 14:37:36", "count" : 2, "pub-type": "phdthesis", "series": "Forschungsberichte aus dem Institut für Tragkonstruktionen und Konstruktives Entwerfen","publisher":"Stuttgart: Institut für Tragkonstruktionen und Konstruktives Entwerfen","address":"ITKE, Stuttgart, Germany", "year": "2017", "url": "", "author": [ "Li. Jian-Min" ], "authors": [ {"first" : "Li.", "last" : "Jian-Min"} ], "editor": [ "Jan Knippers" ], "editors": [ {"first" : "Jan", "last" : "Knippers"} ], "volume": "42","abstract": "Shell structures are structurally efficient but difficult to manufacture and thus expansive. Actively bent grid shells and segmental plate shells could be alternatives. The first kind utilizes bended members to form a continuously curved geometry and thus reduce the complexity of the joints. The second kind utilizes the stability inherited in trivalent geometries to be able to build a shell without using bending stiff joints. Both these two types of timber shell structures could largely reduce the construction cost. That is why they are chosen as the research topics. The dynamic relaxation method (DR) is applied in this research as an important numerical method. It is used as the fundamental base for developing the form-finding tools of both actively bent grid shells\r\nand the segmental grid shells. A solver capable of the structural analysis of beam system is also developed here based on DR. Through the text, we show that DR could handle not only form-finding problems but also geometrically nonlinear analysis.\r\nThe dissertation consists of four parts. Part I is the introduction. Part II and Part III present both the form-finding and analysis techniques of these two types of timber shell structures. The last part is the conclusions.", "isbn" : "978-3-922302-42-1", "language" : "eng", "bibtexKey": "jianmin2017timber" } ] }