{ "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/20a72d1180d9d9ffdbbd3f7b33ce9a61b/petraheim", "tags" : [ "2025","Computational","Form-finding","Integrative","Lightweight","Modular","Optimisation","Plate","Robotic","Segmented","Structural","aicher","bechert","design","engineering","fabrication","göbel","itke","knippers","menges","schlopschnat","shells","structure","system","timber" ], "intraHash" : "0a72d1180d9d9ffdbbd3f7b33ce9a61b", "interHash" : "fa29dda885c328adf06d4704f1fc70ec", "label" : "livMatS biomimetic shell: Structural advancements of segmented timber shells towards permanent building constructions", "user" : "petraheim", "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/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/25c85a2c5a90952c373b9a9a4a95fef77/andreasruopp", "tags" : [ "CFD","Hemodynamics","MRI","OpenFOAM","Optimisation","myown" ], "intraHash" : "5c85a2c5a90952c373b9a9a4a95fef77", "interHash" : "554fd40aeed0597a3a3493e5b3295be6", "label" : "MRI-Based Computational Hemodynamics in Patients", "user" : "andreasruopp", "description" : "", "date" : "2023-05-03 10:18:16", "changeDate" : "2023-05-03 10:18:16", "count" : 2, "pub-type": "inproceedings", "booktitle": "Sustained Simulation Performance 2017","publisher":"Springer International Publishing","address":"Cham", "year": "2017", "url": "", "author": [ "Andreas Ruopp","Ralf Schneider" ], "authors": [ {"first" : "Andreas", "last" : "Ruopp"}, {"first" : "Ralf", "last" : "Schneider"} ], "editor": [ "Michael M. Resch","Wolfgang Bez","Erich Focht","Michael Gienger","Hiroaki Kobayashi" ], "editors": [ {"first" : "Michael M.", "last" : "Resch"}, {"first" : "Wolfgang", "last" : "Bez"}, {"first" : "Erich", "last" : "Focht"}, {"first" : "Michael", "last" : "Gienger"}, {"first" : "Hiroaki", "last" : "Kobayashi"} ], "pages": "165--178","abstract": "The target of this research was to develop a simulation process chain for the analysis of arterial hemodynamics in patients with automatic calibration of all boundary conditions for the physiological correct treatment of flow rates in transient blood flows with multiple bifurcations. The developed methodology uses stationary simulations at peak systolic acceleration and minimizes the error of target and simulated outflow conditions by means of a parallel genetic optimization approach. The target inflow and outflow conditions at peak systole are extracted from 4D phase contrast magnetic resonance imaging (4D PC-MRI). The flow resistance of the arterial system lying downstream of the simulation domain's outlets is modelled via porous media with velocity dependent loss coefficients. In the analysis of the subsequent transient simulations, it will be shown that the proposed calibration method shows to work suitable for three different types of patients including one healthy patient, a patient suffering from an aneurysm as well as one with a coarctation. Additionally the local effects of mapping the measured transient 4D PC-MRI data onto the aortic valve inlet in comparison to the usage of block inlet profiles will be shown.", "isbn" : "978-3-319-66896-3", "bibtexKey": "10.1007/978-3-319-66896-3_11" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2d622e52f974e29312c6c7b9c202c5205/itke", "tags" : [ "2021","aag","architecture","bodea","cfrp","christie","components","coreless","coreless-wound","fabrication","fabrication-aware","filigree","from:petraheim","itke","knippers","material","menges","optimisation","shape","shell","slab","solly" ], "intraHash" : "d622e52f974e29312c6c7b9c202c5205", "interHash" : "be8fe74aa26f4d7345880ffaa62a0d40", "label" : "Filigree Shell Slabs: Material and Fabrication-aware Shape Optimisation for CFRP Coreless- wound Slab Components", "user" : "itke", "description" : "", "date" : "2021-07-08 12:44:42", "changeDate" : "2021-07-09 13:01:50", "count" : 4, "pub-type": "inbook", "booktitle": "Advances in Architectural Geometry 2020", "year": "2021", "url": "", "author": [ "Jorge Christie","Serban Bodea","James Solly","Achim Menges","Jan Knippers" ], "authors": [ {"first" : "Jorge", "last" : "Christie"}, {"first" : "Serban", "last" : "Bodea"}, {"first" : "James", "last" : "Solly"}, {"first" : "Achim", "last" : "Menges"}, {"first" : "Jan", "last" : "Knippers"} ], "editor": [ "O. Baverel","C. Douthe","R. Mesnil","C. Mueller","H. Pottman","T. Tachi" ], "editors": [ {"first" : "O.", "last" : "Baverel"}, {"first" : "C.", "last" : "Douthe"}, {"first" : "R.", "last" : "Mesnil"}, {"first" : "C.", "last" : "Mueller"}, {"first" : "H.", "last" : "Pottman"}, {"first" : "T.", "last" : "Tachi"} ], "pages": "244-263.","abstract": "In recent years, the coreless filament winding (CFW) technique has gained attraction due to its capacity to effectively realize large-scale lightweight building components out of fibre-reinforced composites. However, the sequential nature of its filament- based production process imposes a series of design constraints that restrain the use of this technique in new typologies and applications. The current research introduces a novel shape optimisation-to-fabrication method that expands the scope of CFW to- wards the production of load-bearing components for slabs. A multi-stage workflow is proposed, integrating parametric design, shape optimisation, stress-driven mate- rial layup, and fabrication to ensure a high level of consistency between form and materialization. The research is presented in two phases. The first phase explores the use of shape optimisation to comprehend the underlying logic of shell forms capable of performing under the specific requirements of the slab scenario. The sec- ond phase integrates the inherent conditions of the material, formwork system, and robotic filament winding process into a seamless design-to-manufacturing workflow. The research resulted in a 10.2 kg prototype of a slab load-bearing structure that withstood a load of 559 kg while spanning 2.7 m, demonstrating the effectiveness of the approach.", "isbn" : "978-2-85978-540-6", "language" : "eng", "bibtexKey": "jorge2021filigree" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2d622e52f974e29312c6c7b9c202c5205/petraheim", "tags" : [ "2021","aag","architecture","bodea","cfrp","christie","components","coreless","coreless-wound","fabrication","fabrication-aware","filigree","itke","knippers","material","menges","optimisation","shape","shell","slab","solly" ], "intraHash" : "d622e52f974e29312c6c7b9c202c5205", "interHash" : "be8fe74aa26f4d7345880ffaa62a0d40", "label" : "Filigree Shell Slabs: Material and Fabrication-aware Shape Optimisation for CFRP Coreless- wound Slab Components", "user" : "petraheim", "description" : "", "date" : "2021-07-08 12:44:42", "changeDate" : "2021-07-08 10:52:17", "count" : 4, "pub-type": "inbook", "booktitle": "Advances in Architectural Geometry 2020", "year": "2021", "url": "", "author": [ "Jorge Christie","Serban Bodea","James Solly","Achim Menges","Jan Knippers" ], "authors": [ {"first" : "Jorge", "last" : "Christie"}, {"first" : "Serban", "last" : "Bodea"}, {"first" : "James", "last" : "Solly"}, {"first" : "Achim", "last" : "Menges"}, {"first" : "Jan", "last" : "Knippers"} ], "editor": [ "O. Baverel","C. Douthe","R. Mesnil","C. Mueller","H. Pottman","T. Tachi" ], "editors": [ {"first" : "O.", "last" : "Baverel"}, {"first" : "C.", "last" : "Douthe"}, {"first" : "R.", "last" : "Mesnil"}, {"first" : "C.", "last" : "Mueller"}, {"first" : "H.", "last" : "Pottman"}, {"first" : "T.", "last" : "Tachi"} ], "pages": "244-263.","abstract": "In recent years, the coreless filament winding (CFW) technique has gained attraction due to its capacity to effectively realize large-scale lightweight building components out of fibre-reinforced composites. However, the sequential nature of its filament- based production process imposes a series of design constraints that restrain the use of this technique in new typologies and applications. The current research introduces a novel shape optimisation-to-fabrication method that expands the scope of CFW to- wards the production of load-bearing components for slabs. A multi-stage workflow is proposed, integrating parametric design, shape optimisation, stress-driven mate- rial layup, and fabrication to ensure a high level of consistency between form and materialization. The research is presented in two phases. The first phase explores the use of shape optimisation to comprehend the underlying logic of shell forms capable of performing under the specific requirements of the slab scenario. The sec- ond phase integrates the inherent conditions of the material, formwork system, and robotic filament winding process into a seamless design-to-manufacturing workflow. The research resulted in a 10.2 kg prototype of a slab load-bearing structure that withstood a load of 559 kg while spanning 2.7 m, demonstrating the effectiveness of the approach.", "isbn" : "978-2-85978-540-6", "language" : "eng", "bibtexKey": "jorge2021filigree" } , { "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/24227971b3516b084125d1b37e8dcbac0/petraheim", "tags" : [ "2012","algorithm","architecture","based","dimcic","diss","dissertation","engineering","forschungsbericht","from:petraheim","genetic","grid","itke","optimisation","optimization","shell","structural" ], "intraHash" : "4227971b3516b084125d1b37e8dcbac0", "interHash" : "62f2af1051cae336f6d6ec10e72fed49", "label" : "Structural Optimization of Grid Shells based on Genetic Algorithms", "user" : "petraheim", "description" : "", "date" : "2020-06-24 13:42:52", "changeDate" : "2021-07-01 13:01:33", "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": "2012", "url": "", "author": [ "Milos Dimcic" ], "authors": [ {"first" : "Milos", "last" : "Dimcic"} ], "editor": [ "Jan Knippers" ], "editors": [ {"first" : "Jan", "last" : "Knippers"} ], "volume": "32","abstract": "In the 21st century, as free form design gains popularity, free-form grid shells are becoming a universal structural solution, enabling merger of structure and facade into a single layer - a skin [31]. The subject of the presented work is the optimization of grid structures over some predefined free form shape, with the goal of generating\r\na stable and statically efficient structure. It is shown how combining design and FEM software in an iterative, Genetic Algorithms based, optimization process, stress and displacements in grid shell structures can be significantly reduced, whereby material can be saved and stability enhanced.\r\nWithin this research, design and static analysis software are combined in order to perform a statical optimization of grid shells,generated over a given free form surface. A plug-in for Rhinoceros 3D (software based on NURBS [44] geometry representation) is developed, that uses Genetic Algorithms as an optimization method and implements automated iterative calls to Oasys GSA (commercial FEM static analysis software) in order to generate a statically optimal grid shell. To make this possible, within this research some new types of automatic grid generation are developed. Voronoi\r\ndiagrams [11] were used together with the adapted Force-Density method [38] to develop a new type of grid structure that we called Voronax. In the presented work it was shown that, using the same free form surface, and using the same number of joints and structural members, we can generate much more efficient grid shells,\r\nwhen compared to the standard (uniform) grid structures, simply by modifying the structural grid, i.e., rearranging the structural members of the grid shell.\r\nThe work presented offers an explanation of the entire method and how it can be constructed. The results of the experiments are there to prove its efficiency and credibility. Once it is proved that the method works, its application can take various forms and be left to the creativity of the user and the requirements of the\r\nspecific project.", "isbn" : "978-3-922302-32-2", "language" : "eng", "bibtexKey": "dimcic2012structural" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/283ad214b9fee18994f2efc8798f1e367/itke", "tags" : [ "joint","glass","lippert","2012","knippers","engineering","shell","design","itke","optimisation","from:petraheim","pattern","fildhuth","architecture" ], "intraHash" : "83ad214b9fee18994f2efc8798f1e367", "interHash" : "9feea58a2d9fecb5b3e9bb108b9328f2", "label" : "Design and Joint Pattern Optimisation of Glass Shells", "user" : "itke", "description" : "", "date" : "2020-06-02 12:10:18", "changeDate" : "2020-06-02 10:10:18", "count" : 3, "pub-type": "inproceedings", "booktitle": "IASS-ACPS Conference Proceedings","address":"Seoul, Korea", "year": "2012", "url": "", "author": [ "Thiemo Fildhuth","S. Lippert","J Knippers" ], "authors": [ {"first" : "Thiemo", "last" : "Fildhuth"}, {"first" : "S.", "last" : "Lippert"}, {"first" : "J", "last" : "Knippers"} ], "editor": [ "International Association for Shell","Spatial Structures" ], "editors": [ {"first" : "International Association", "last" : "for Shell"}, {"first" : "Spatial", "last" : "Structures"} ], "pages": "165 pp", "language" : "eng", "bibtexKey": "fildhuth2012design" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/209107402eaa79894eb4eb2d7a023e184/itke", "tags" : [ "2015","bacterial","concrete","design","equilibrium","fabrication","form","free-form","freeform","from:petraheim","inspired","itke","knippers","materiality","multidisciplinary","optimisation","strategy","structures","waimer" ], "intraHash" : "09107402eaa79894eb4eb2d7a023e184", "interHash" : "17c22ed07468cddf8d2fd01cb475a8fd", "label" : "Design Equilibrium of Form, Materiality and Fabrication: A Bacterial Inspired Multidisciplinary Optimisation Strategy for Free-Form Concrete Structures", "user" : "itke", "description" : "", "date" : "2020-05-22 14:52:34", "changeDate" : "2021-07-08 14:44:10", "count" : 2, "pub-type": "inproceedings", "booktitle": "In: Modelling Behaviour: Design Modelling Symposium 2015","address":"Copenhagen, Denmark", "year": "2015", "url": "", "author": [ "Frédéric Waimer","Jan Knippers" ], "authors": [ {"first" : "Frédéric", "last" : "Waimer"}, {"first" : "Jan", "last" : "Knippers"} ], "pages": "303 \u2013 313", "language" : "eng", "bibtexKey": "waimer2015design" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2dd9bd77093acd0fd2fa6e874dcf59386/itke", "tags" : [ "2012","architecture","design","engineering","fildhuth","from:petraheim","glass","itke","joint","knippers","lippert","optimisation","pattern","shell" ], "intraHash" : "dd9bd77093acd0fd2fa6e874dcf59386", "interHash" : "9feea58a2d9fecb5b3e9bb108b9328f2", "label" : "Design and Joint Pattern Optimisation of Glass Shells", "user" : "itke", "description" : "", "date" : "2020-05-22 14:23:59", "changeDate" : "2020-05-25 09:39:36", "count" : 3, "pub-type": "inproceedings", "booktitle": "IASS-ACPS Conference Proceedings","address":"Seoul, Korea", "year": "2012", "url": "", "author": [ "Thiemo Fildhuth","S. Lippert","J Knippers" ], "authors": [ {"first" : "Thiemo", "last" : "Fildhuth"}, {"first" : "S.", "last" : "Lippert"}, {"first" : "J", "last" : "Knippers"} ], "pages": "165 pp", "language" : "eng", "bibtexKey": "fildhuth2012design" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/202f4cf2a2b662be0a7d5a2986e22ba27/itke", "tags" : [ "joint","strategies","glass","lippert","2012","knippers","engineering","shell","layout","itke","optimisation","from:petraheim","pattern","fildhuth","architecture","full" ], "intraHash" : "02f4cf2a2b662be0a7d5a2986e22ba27", "interHash" : "30e20b9c81c2a47cd30361eb44436de4", "label" : "Layout Strategies and Optimisation of Joint Patterns in Full Glass Shells", "user" : "itke", "description" : "", "date" : "2020-05-22 14:23:59", "changeDate" : "2020-05-22 12:23:59", "count" : 2, "pub-type": "inproceedings", "booktitle": "Challenging Glass 3 Conference Proceedings","address":"Delft", "year": "2012", "url": "", "author": [ "Thiemo Fildhuth","S. Lippert","Jan Knippers" ], "authors": [ {"first" : "Thiemo", "last" : "Fildhuth"}, {"first" : "S.", "last" : "Lippert"}, {"first" : "Jan", "last" : "Knippers"} ], "editor": [ " Bos"," Louter"," Nijsse"," Veer" ], "editors": [ {"first" : "", "last" : "Bos"}, {"first" : "", "last" : "Louter"}, {"first" : "", "last" : "Nijsse"}, {"first" : "", "last" : "Veer"} ], "pages": "845", "language" : "eng", "bibtexKey": "fildhuth2012layout" } , { "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/24227971b3516b084125d1b37e8dcbac0/itke", "tags" : [ "2012","algorithm","architecture","based","dimcic","diss","dissertation","engineering","forschungsbericht","from:petraheim","genetic","grid","itke","optimisation","optimization","shell","structural" ], "intraHash" : "4227971b3516b084125d1b37e8dcbac0", "interHash" : "62f2af1051cae336f6d6ec10e72fed49", "label" : "Structural Optimization of Grid Shells based on Genetic Algorithms", "user" : "itke", "description" : "", "date" : "2020-05-22 14:20:03", "changeDate" : "2020-06-24 11:41:45", "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": "2012", "url": "", "author": [ "Milos Dimcic" ], "authors": [ {"first" : "Milos", "last" : "Dimcic"} ], "editor": [ "Jan Knippers" ], "editors": [ {"first" : "Jan", "last" : "Knippers"} ], "volume": "32","abstract": "In the 21st century, as free form design gains popularity, free-form grid shells are becoming a universal structural solution, enabling merger of structure and facade into a single layer - a skin [31]. The subject of the presented work is the optimization of grid structures over some predefined free form shape, with the goal of generating\r\na stable and statically efficient structure. It is shown how combining design and FEM software in an iterative, Genetic Algorithms based, optimization process, stress and displacements in grid shell structures can be significantly reduced, whereby material can be saved and stability enhanced.\r\nWithin this research, design and static analysis software are combined in order to perform a statical optimization of grid shells,generated over a given free form surface. A plug-in for Rhinoceros 3D (software based on NURBS [44] geometry representation) is developed, that uses Genetic Algorithms as an optimization method and implements automated iterative calls to Oasys GSA (commercial FEM static analysis software) in order to generate a statically optimal grid shell. To make this possible, within this research some new types of automatic grid generation are developed. Voronoi\r\ndiagrams [11] were used together with the adapted Force-Density method [38] to develop a new type of grid structure that we called Voronax. In the presented work it was shown that, using the same free form surface, and using the same number of joints and structural members, we can generate much more efficient grid shells,\r\nwhen compared to the standard (uniform) grid structures, simply by modifying the structural grid, i.e., rearranging the structural members of the grid shell.\r\nThe work presented offers an explanation of the entire method and how it can be constructed. The results of the experiments are there to prove its efficiency and credibility. Once it is proved that the method works, its application can take various forms and be left to the creativity of the user and the requirements of the\r\nspecific project.", "isbn" : "978-3-922302-32-2", "language" : "eng", "bibtexKey": "dimcic2012structural" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/209107402eaa79894eb4eb2d7a023e184/petraheim", "tags" : [ "2015","bacterial","concrete","design","equilibrium","fabrication","form","free-form","frreform","inspired","itke","knippers","materiality","multidisciplinary","optimisation","strategy","structures","waimer" ], "intraHash" : "09107402eaa79894eb4eb2d7a023e184", "interHash" : "17c22ed07468cddf8d2fd01cb475a8fd", "label" : "Design Equilibrium of Form, Materiality and Fabrication: A Bacterial Inspired Multidisciplinary Optimisation Strategy for Free-Form Concrete Structures", "user" : "petraheim", "description" : "", "date" : "2020-05-19 14:04:57", "changeDate" : "2020-06-02 10:08:04", "count" : 2, "pub-type": "inproceedings", "booktitle": "In: Modelling Behaviour: Design Modelling Symposium 2015","address":"Copenhagen, Denmark", "year": "2015", "url": "", "author": [ "Frédéric Waimer","Jan Knippers" ], "authors": [ {"first" : "Frédéric", "last" : "Waimer"}, {"first" : "Jan", "last" : "Knippers"} ], "pages": "303 \u2013 313", "language" : "eng", "bibtexKey": "waimer2015design" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2b3a4cc8d934e1b348514210472f85a33/petraheim", "tags" : [ "2013","architecture","engineering","freeform","itke","knippers","magna","nature-inspired","optimisation","optimization","shell","structural","waimer" ], "intraHash" : "b3a4cc8d934e1b348514210472f85a33", "interHash" : "e8b58afc64283d3e1854def733d09923", "label" : "Nature-inspired structural optimization of freeform shells", "user" : "petraheim", "description" : "", "date" : "2020-05-18 14:39:53", "changeDate" : "2020-06-02 10:08:53", "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/202f4cf2a2b662be0a7d5a2986e22ba27/petraheim", "tags" : [ "2012","architecture","engineering","fildhuth","full","glass","itke","joint","knippers","layout","lippert","optimisation","pattern","shell","strategies" ], "intraHash" : "02f4cf2a2b662be0a7d5a2986e22ba27", "interHash" : "30e20b9c81c2a47cd30361eb44436de4", "label" : "Layout Strategies and Optimisation of Joint Patterns in Full Glass Shells", "user" : "petraheim", "description" : "", "date" : "2020-05-18 11:45:27", "changeDate" : "2020-06-02 10:10:17", "count" : 2, "pub-type": "inproceedings", "booktitle": "Challenging Glass 3 Conference Proceedings","address":"Delft", "year": "2012", "url": "", "author": [ "Thiemo Fildhuth","S. Lippert","Jan Knippers" ], "authors": [ {"first" : "Thiemo", "last" : "Fildhuth"}, {"first" : "S.", "last" : "Lippert"}, {"first" : "Jan", "last" : "Knippers"} ], "editor": [ " Bos"," Louter"," Nijsse"," Veer" ], "editors": [ {"first" : "", "last" : "Bos"}, {"first" : "", "last" : "Louter"}, {"first" : "", "last" : "Nijsse"}, {"first" : "", "last" : "Veer"} ], "pages": "845", "language" : "eng", "bibtexKey": "fildhuth2012layout" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/283ad214b9fee18994f2efc8798f1e367/petraheim", "tags" : [ "2012","architecture","design","engineering","fildhuth","glass","itke","joint","knippers","lippert","optimisation","pattern","shell" ], "intraHash" : "83ad214b9fee18994f2efc8798f1e367", "interHash" : "9feea58a2d9fecb5b3e9bb108b9328f2", "label" : "Design and Joint Pattern Optimisation of Glass Shells", "user" : "petraheim", "description" : "", "date" : "2020-05-18 11:37:16", "changeDate" : "2020-06-02 10:10:17", "count" : 3, "pub-type": "inproceedings", "booktitle": "IASS-ACPS Conference Proceedings","address":"Seoul, Korea", "year": "2012", "url": "", "author": [ "Thiemo Fildhuth","S. Lippert","J Knippers" ], "authors": [ {"first" : "Thiemo", "last" : "Fildhuth"}, {"first" : "S.", "last" : "Lippert"}, {"first" : "J", "last" : "Knippers"} ], "editor": [ "International Association for Shell","Spatial Structures" ], "editors": [ {"first" : "International Association", "last" : "for Shell"}, {"first" : "Spatial", "last" : "Structures"} ], "pages": "165 pp", "language" : "eng", "bibtexKey": "fildhuth2012design" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/29cb159f22e8604b52c370f39b4b4a1ec/bastianluettig", "tags" : [ "Aerospace_electronics","Atmospheric_modeling","Computational_modeling","Computers","Hardware","IMA_systems","InProceedings","Redundancy","Safety","aerospace_safety","aircraft_manufacturers","automatic_safety_computation","avionics","ils","integrated_modular_avionics_design_philosophy","optimisation","optimisation_algorithm","safety_requirements" ], "intraHash" : "9cb159f22e8604b52c370f39b4b4a1ec", "interHash" : "37d39ac3529fb252e0d1a56fddad4785", "label" : "Automatic Safety Computation for IMA Systems", "user" : "bastianluettig", "description" : "", "date" : "2020-01-20 14:28:26", "changeDate" : "2020-01-20 13:28:26", "count" : 1, "pub-type": "book", "booktitle": "IEEE/AIAA 30th Digital Avionics Systems Conference (DASC)","address":"Seattle", "year": "2011", "url": "https://ieeexplore.ieee.org/abstract/document/6096123", "author": [ "U. Salomon","R. Reichel" ], "authors": [ {"first" : "U.", "last" : "Salomon"}, {"first" : "R.", "last" : "Reichel"} ], "pages": "7C3-1-7C3-9","abstract": "During the last years, the integrated modular avionics (IMA) design philosophy became widely established at aircraft manufacturers, giving rise to a series of new design challenges, most notably the allocation of avionics functions to the various IMA components and the placement of this equipment in the aircraft. This paper presents a modelling approach for avionics that allows for automatic computation of the safety of large and heavily interdependent systems, and shall help to quickly evaluate candidate system configurations during early and intermediate design. It is part of a project striving to automatise some steps of the design process by applying an optimisation algorithm which searches for system configurations that fulfil the safety requirements and have low costs.", "groups" : "InProceedings", "doi" : "10.1109/DASC.2011.6096123", "bibtexKey": "salomon2011automatic" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2ed368ff59a4c74d81c1346239c971589/michaelbeltle", "tags" : [ "automotive","circuit","emc","filter","myown","optimierung","optimisation","simulation","traktionsnetzsend:unibibliosend:unibiblio" ], "intraHash" : "ed368ff59a4c74d81c1346239c971589", "interHash" : "ed531d7191c68a06f3b37d3841d5b110", "label" : "Automated Filter Optimization for High-Voltage Cable Harness based on Circuit Simulations for Conducted Emissions Prediction", "user" : "michaelbeltle", "description" : "", "date" : "2019-01-25 14:10:13", "changeDate" : "2019-01-25 13:21:17", "count" : 2, "pub-type": "conference", "year": "2018", "url": "", "author": [ "Denis Müller","Michael Beltle","Stefan Tenbohlen" ], "authors": [ {"first" : "Denis", "last" : "Müller"}, {"first" : "Michael", "last" : "Beltle"}, {"first" : "Stefan", "last" : "Tenbohlen"} ], "pages": "84-89","abstract": "EMI suppression in vehicles cable harnesses is commonly realized by passive EMI filters. Rising battery voltages, faster semiconductor switches and the use of unshielded DC-cables requires larger filters. In addition, it is necessary being able to estimate the size of the EMI-filter in an early stage of development, when no measurements of the conducted emissions exist yet. To solve this problem, an automated filter optimization tool based on simulations for the prediction of conducted common-mode emissions (CE) is presented. The simulation model requires only a little information of the inverter which is accessible at an early stage of development. The accuracy of the model is good enough to predict the CE up to 30 MHz. In combination with a differential evolution algorithm for the optimization of the filters components, a fast estimation ofthe required space can be achieved.", "eventtitle" : "EMC Europe", "venue" : "Amsterdam, Niederlande", "eventdate" : "August 27-30, 2018", "bibtexKey": "muller2018automated" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/254618f60c38875f0ada92b7bc0258d90/michaelgienger", "tags" : [ "HPC","HPDA","Optimisation","Simulation" ], "intraHash" : "54618f60c38875f0ada92b7bc0258d90", "interHash" : "82389724266e4c8b44a2f95d4e037fb1", "label" : "Sustained Simulation Performance 2017", "user" : "michaelgienger", "description" : "", "date" : "2018-01-28 16:30:58", "changeDate" : "2018-01-28 15:30:58", "count" : 1, "pub-type": "book", "year": "2017", "url": "", "author": [ "Michael M. Resch","Wolfgang Bez","Erich Focht","Michael Gienger","Hiroaki Kobayashi" ], "authors": [ {"first" : "Michael M.", "last" : "Resch"}, {"first" : "Wolfgang", "last" : "Bez"}, {"first" : "Erich", "last" : "Focht"}, {"first" : "Michael", "last" : "Gienger"}, {"first" : "Hiroaki", "last" : "Kobayashi"} ], "editor": [ "Michael M. Resch","Wolfgang Bez","Erich Focht","Michael Gienger","Hiroaki Kobayashi" ], "editors": [ {"first" : "Michael M.", "last" : "Resch"}, {"first" : "Wolfgang", "last" : "Bez"}, {"first" : "Erich", "last" : "Focht"}, {"first" : "Michael", "last" : "Gienger"}, {"first" : "Hiroaki", "last" : "Kobayashi"} ], "bibtexKey": "resch2017sustained" } ] }