Cumincad : CUMINCAD Papers : Search Results

CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id	acadia14projects_71
id	acadia14projects_71
authors	Kalo, Ammar; Newsum, Michael Jake
year	2014
title	Robotic Incremental Sheet Metal Fabrication
doi	https://doi.org/10.52842/conf.acadia.2014.071
source	ACADIA 14: Design Agency [Projects of the 34th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 9789126724478]Los Angeles 23-25 October, 2014), pp. 71-74
summary	Building on previous and current work, this research utilizes the Single Point Incremental Forming (SPIF) process to produce mass customized, double-curved (both positive and negative Gaussian curvature), three-dimensional forms from sheet metal.
keywords	Incremental Sheet Forming, Parametric, Computational Design, Fabrication, Sheet Metal, Architectural Skins, Digital fabrication and construction.
series	ACADIA
type	Research Projects
email
last changed	2022/06/07 07:52

_id	acadia14_531
id	acadia14_531
authors	Kalo, Ammar; Newsum, Michael Jake
year	2014
title	Bug-Out Fabrication: A Parallel Investigation using the Namib Darkling Beetle as a Biological Model and Incremental Sheet Metal Forming as a Fabrication Method.
doi	https://doi.org/10.52842/conf.acadia.2014.531
source	ACADIA 14: Design Agency [Proceedings of the 34th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 9781926724478]Los Angeles 23-25 October, 2014), pp.531-538
summary	This paper presents a project that aims to capitalize on the interchanges between two independent yet concurrent design and fabrication studies. The research demonstrates pairing of design and fabrication workflows using a biological model from the Namib Darkling Beetle, as well as advancing the research on incremental sheet forming.
keywords	Incremental Sheet Forming, Namib Darkling Beetle, Computational Design, Fabrication, Sheet Metal, Shelter
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 07:52

_id	caadria2022_294
id	caadria2022_294
authors	Cui, Qiang, Pawar, Siddharth Suhas, He, Mengxi and Yu, Chuan
year	2022
title	Forming Strategies for Robotic Incremental Sheet Forming
doi	https://doi.org/10.52842/conf.caadria.2022.2.171
source	Jeroen van Ameijde, Nicole Gardner, Kyung Hoon Hyun, Dan Luo, Urvi Sheth (eds.), POST-CARBON - Proceedings of the 27th CAADRIA Conference, Sydney, 9-15 April 2022, pp. 171-180
summary	Incremental Sheet Forming (ISF) is a flexible forming technology that can process parts without special mould, where-in an indenter moves over the surface of a sheet metal forming a 3D shell through localized deformation. Despite being fundamentally advantageous than stamping for low-volume production, there are many drawbacks to this technique, a major being the low geometrical accuracy of the achieved products, thereby limiting its widespread industrial application. In this paper, flexible support strategies and precise forming compensation have been considered as promising approaches in terms of improving the geometric accuracy in ISF. Four support strategies and a compensation forming method based on FEA and three-dimensional scanning are discussed in detail. Finally, we deploy the technique for the manufacturing of automotive products. The technique is applied to several automotive products of varying topologies and thus form the basis for successful verification of our technique.
keywords	Incremental sheet forming, Robotic fabrication, Forming path, Error compensation, SDG 12
series	CAADRIA
email
last changed	2022/07/22 07:34

_id	ecaade2021_178
id	ecaade2021_178
authors	Nicholas, Paul, Chiujdea, Ruxandra Stefania, Sonne, Konrad and Scaffidi, Antonio
year	2021
title	Design and Fabrication Methodologies for Repurposing End of Life Metal via Robotic Incremental Sheet Metal Forming
doi	https://doi.org/10.52842/conf.ecaade.2021.2.171
source	Stojakovic, V and Tepavcevic, B (eds.), Towards a new, configurable architecture - Proceedings of the 39th eCAADe Conference - Volume 2, University of Novi Sad, Novi Sad, Serbia, 8-10 September 2021, pp. 171-180
summary	This paper investigates an integrative approach to robotic incremental sheet metal forming (RISF), which connects the registration of variable material properties and geometries to the re-forming of pre-made components beyond their initial formulations. Re-using rather than recycling metals can save the significant energy costs that come with having to melt, purify and re-manufacture products, as well as saving the costs of the new object it replaces. In this paper, we describe a workflow that connects 3d scanning, design automation and fabrication. The method goes beyond state of the art for RISF by challenging the assumption of starting from a flat unused sheet of metal, opening up the potential of RISF for material reuse. Our approach is demonstrated through the fabrication of a series of bench seating elements from oil drum geometries, however is generalisable to other input materials and output geometries. 3d scanning is used to register varying geometric features such as rolled beads, irregularities such as dents and holes, and material properties such as corrosion.
keywords	robotic fabrication; re-use; upcycling; incremental sheet metal forming
series	eCAADe
email
last changed	2022/06/07 07:58

_id	acadia16_308
id	acadia16_308
authors	Nicholas, Paul; Zwierzycki, Mateusz; Stasiuk, David; Norgaard, Esben; Thomsen, Mette Ramsgaard
year	2016
title	Concepts and Methodologies for Multiscale Modeling: A Mesh-Based Approach for Bi-Directional Information Flows
doi	https://doi.org/10.52842/conf.acadia.2016.308
source	ACADIA // 2016: POSTHUMAN FRONTIERS: Data, Designers, and Cognitive Machines [Proceedings of the 36th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-77095-5] Ann Arbor 27-29 October, 2016, pp. 308-317
summary	This paper introduces concepts and methodologies for multiscale modeling in architecture, and demonstrates their application to support bi-directional information flows in the design of a panelized, thin skinned metal structure. Parameters linked to the incremental sheet forming fabrication process, rigidisation, panelization, and global structural performance are included in this information flow. The term multiscale refers to the decomposition of a design problem into distinct but interdependent models according to scales or frameworks, and to the techniques that support the transfer of information between these models. We describe information flows between the scales of structure, panel element, and material via two mesh-based approaches. The first approach demonstrates the use of adaptive meshing to efficiently and sequentially increase resolution to support structural analysis, panelization, local geometric formation, connectivity, and the calculation of forming strains and material thinning. A second approach shows how dynamically coupling adaptive meshing with a tree structure supports efficient refinement and coarsening of information. The multiscale modeling approaches are substantiated through the production of structures and prototypes.
keywords	adaptive meshing, robotic fabrication, simulation, material behavior, incremental sheet forming, multiscale
series	ACADIA
type	paper
email
last changed	2022/06/07 07:58

_id	acadia22_98
id	acadia22_98
authors	Pawlowska, Gosia (Malgorzata)
year	2022
title	Intentional Folds
source	ACADIA 2022: Hybrids and Haecceities [Proceedings of the 42nd Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA) ISBN 979-8-9860805-8-1]. University of Pennsylvania Stuart Weitzman School of Design. 27-29 October 2022. edited by M. Akbarzadeh, D. Aviv, H. Jamelle, and R. Stuart-Smith. 98-107.
summary	This paper investigates new techniques for the production of creative forms in glass by the novel application of robotic incremental sheet forming (ISF) to make steel molds for slumped glass. Also known as single point incremental forming (SPIF), ISF is an industrial fabrication process that uses a robotic arm and end-of-arm tool to press a three-dimensional shape into a sheet material by applying concentrated force along a given toolpath. While precedent exists for architectural assemblies of metal panels formed by ISF, this work proposes an original prototype whereby three-dimensional steel panels are used as formwork for architec- tural glass.
series	ACADIA
type	normal paper
email
last changed	2024/03/21 12:42

_id	caadria2019_648
id	caadria2019_648
authors	Schumann, Kyle and Johns, Ryan Luke
year	2019
title	Airforming - Adaptive Robotic Molding of Freeform Surfaces through Incremental Heat and Variable Pressure
doi	https://doi.org/10.52842/conf.caadria.2019.1.033
source	M. Haeusler, M. A. Schnabel, T. Fukuda (eds.), Intelligent & Informed - Proceedings of the 24th CAADRIA Conference - Volume 1, Victoria University of Wellington, Wellington, New Zealand, 15-18 April 2019, pp. 33-42
summary	Advances in computational modelling and digital fabrication have created both the need and ability for novel strategies of bringing digitally modeled doubly curved surfaces into reality. In this paper, we introduce airforming as a non-contact and formwork-free method for fabricating digitally designed surfaces through the iterative robotic application of heat and air pressure, coupled with sensory feedback. The process lies somewhere between incremental metal fabrication and traditional vacuum forming of plastics. Airforming does not add or subtract material or use any mold or formwork materials that would typically be discarded as waste. Instead, airforming shapes a plastic sheet through the controlled spatial application of heat and the control of pressure and vacuum within an airtight chamber beneath the material. Through our research, we develop and test a method for airforming through 3D scanning and point cloud analysis, evolutionary physics simulation solvers, and robotic-aided actuation and control of heating and pressure systems. Different variations and analysis and workflow methods are explored. We demonstrate and posit potential future applications for the airforming method.
keywords	Robotic Production; Digital Fabrication; Incremental Forming; Thermoforming; Freeform Surface
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	sigradi2023_152
id	sigradi2023_152
authors	Véliz, Felipe, Benavides, Paola, Tala, Camila and Konig, Joaquín
year	2023
title	Robotic Incremental Sheet Metal Forming: Waste Management Through Digital Fabrication
source	García Amen, F, Goni Fitipaldo, A L and Armagno Gentile, Á (eds.), Accelerated Landscapes - Proceedings of the XXVII International Conference of the Ibero-American Society of Digital Graphics (SIGraDi 2023), Punta del Este, Maldonado, Uruguay, 29 November - 1 December 2023, pp. 657–668
summary	In this investigation, a robotic incremental sheet forming (RISF) process was used as a response to traditional methods of recycling and reusing scrap metal. The methodology was carried out in three stages: digital reconstruction of the waste by 3D scanning, tensile test according to the ASTM E8 standard for the mechanical characterization of the material and the use of a heavy-load robot, KUKA KR180 R2500, for incremental forming. The results obtained in the tensile test indicated that the material maintains its isotropy and reaches 10% elongation. On the other hand, parameters of the incremental forming process showed: the ability of the material to be deformed with a maximum wall angle of 55°; speed rate of 50%; stepdown of 2 mm; and maximum depth of 75 mm. Finally, the process was used for the development of an ornamental surface.
keywords	Robotic fabrication, Incremental sheet metal forming, Upcycling, Scrap metal
series	SIGraDi
email
last changed	2024/03/08 14:07

_id	ecaade2014_060
id	ecaade2014_060
authors	Koki Akiyoshi and Hiroya Tanaka
year	2014
title	Local-reconfigurable Freeform surface with plywood - From the perspective of Japanese Tsugite-Shiguchi
doi	https://doi.org/10.52842/conf.ecaade.2014.1.527
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 1, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 527-535
summary	This research exhibits a novel construction method for Freeform surfaces with plywood, without using metal joints and bending. By introducing the perspective of Japanese Tsugite-Shiguchi, the research aims for a drastic change from node-oriented thinking to module-oriented thinking. This paper focuses on the investigation of how to simplify fabrication processes, how to realize the environmental capabilities of Freeform wood structures, and how to provide redundancy and stability to the whole architectural system. In order to challenge these problems, we examined three discretion methods. As a result, we have been successful to produce a double-layered surface, filled with triangular mesh, implemented only by cutting one sheet of plywood. Moreover, the system has also acquired a new nature: local-reconfigurability, wherein it can react and adapt to fit local parameters and requirements.
wos	WOS:000361384700052
keywords	Digital fabrication; freeform timber; without metal and bending; discrete surface; minimal components for mega-assembly
series	eCAADe
email
last changed	2022/06/07 07:51

_id	caadria2014_173
id	caadria2014_173
authors	Lim, Jason; Ammar Mirjan, Fabio Gramazio and Matthias Kohler
year	2014
title	Robotic Metal Aggregations
doi	https://doi.org/10.52842/conf.caadria.2014.159
source	Rethinking Comprehensive Design: Speculative Counterculture, Proceedings of the 19th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2014) / Kyoto 14-16 May 2014, pp. 159–168
summary	The recent convergence of computational design and digital fabrication has made new forms of architectural materialization possible. A workshop conducted at the Royal Melbourne Institute of Technology investigated how differentiated lightweight metal structures may be designed and fabricated under these new conditions. The workshop aim was to complete three such structures; each one is aggregated from aluminum profiles that are robotically assembled according to computationally driven geometric logics. The key challenge was to enable participants, assumed to lack programming and robotic fabrication experience, to design and construct their structures within imposed time constraints. This paper describes the subsequent development of accessible computational design tools and a robust robotic fabrication method for the workshop, and highlights the key decisions taken with their implementation. The workshop results are discussed and the design tools evaluated with respect to them. The paper concludes by recommending an approach to developing computational design tools which emphasizes the importance of usability and integration with the fabrication process.
keywords	Robotic fabrication; computational design; visual programming; lightweight structures
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	ecaade2020_515
id	ecaade2020_515
authors	Chadha, Kunaljit, Dubor, Alexandre, Puigpinos, Laura and Rafols, Irene
year	2020
title	Space Filling Curves for Optimising Single Point Incremental Sheet Forming using Supervised Learning Algorithms
doi	https://doi.org/10.52842/conf.ecaade.2020.1.555
source	Werner, L and Koering, D (eds.), Anthropologic: Architecture and Fabrication in the cognitive age - Proceedings of the 38th eCAADe Conference - Volume 1, TU Berlin, Berlin, Germany, 16-18 September 2020, pp. 555-562
summary	Increasing use of computational design tools have led to an increase in the demand for mass customised fabrication, rendering decades old industrial CAD-CAM protocols limiting for such fabrication processes. This bespoke demand of components has led to a unified workflow between design strategies and production techniques. Recent advances in computation have allowed us to predict and register the tolerances of fabrication before and while being fabricated. Procedural algorithms are a set of novel problem-solving methods and have been attracting considerable attention for their good performance.They follow a procedural way of iteration with an established way of behavior.In the particular case of Incremental Sheet forming (ISF), these algorithms can realize several functions such as edge detection and segmentation required for optimizing machining time and accuracy.In this context, this paper presents a methodology to optimize long-drawn-out ISF operation by using geometrical intervention informed by supervised machine learning algorithms.
keywords	Procedural Algorithms; Incremental Sheet Forming; Robotic Cold forming; Mass Customization
series	eCAADe
email
last changed	2022/06/07 07:55

_id	cf2019_050
id	cf2019_050
authors	Erdine, Elif ; Giulio Gianni, Angel Fernando Lara Moreira, Alvaro Lopez Rodriguez, Yutao Song and Alican Sungur
year	2019
title	Robot-Aided Fabrication of Light-Weight Structures with Sheet Metal Expansion
source	Ji-Hyun Lee (Eds.) "Hello, Culture!" [18th International Conference, CAAD Futures 2019, Proceedings / ISBN 978-89-89453-05-5] Daejeon, Korea, p. 433
summary	This paper presents a novel approach for the creation of metal lightweight self-supporting structures through the employment of metal kerfing and robotic sheet panel expansion. Research objectives focus on the synthesis of material behavior on a local scale and the structural performance on a global scale via advanced computational and robotic methods. There are inherent structural properties to expanded metal sheets which can be employed to achieve an integrated building system without the need for a secondary supporting structure. A computational workflow that integrates Finite Element Analysis, geometrical optimization, and robotic toolpath planning has been developed. This workflow is informed by the parameters of material experimentation on sheet metal kerfing and robotic sheet metal expansion on the local panel scale. The proposed methodology is applied on a range of panels with a custom-built robotic fabrication setup for the design, fabrication, and assembly of a one-to-one scale working prototype.
keywords	Robotic fabrication, Robotic sheet metal expansion, Light-weight structure, Metal kerfing, Metal expansion
series	CAAD Futures
email
last changed	2019/07/29 14:18

_id	ecaade2024_290
id	ecaade2024_290
authors	Hsieh, Wen-Chun; Sheng, Yu-Ting; Wang, Shih-Yuan
year	2024
title	Exploration of Incremental Sheet Forming for Application in Formwork Techniques
doi	https://doi.org/10.52842/conf.ecaade.2024.1.085
source	Kontovourkis, O, Phocas, MC and Wurzer, G (eds.), Data-Driven Intelligence - Proceedings of the 42nd Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2024), Nicosia, 11-13 September 2024, Volume 1, pp. 85–94
summary	This research explores the application of Incremental Sheet Forming (ISF) technology in concrete formwork to enhance efficiency and sustainability in construction. Traditional formwork methods suffer from inefficiency and limited customizability, prompting the need for alternatives. In the 1930s, the emergence of pneumatic formwork marked a significant advancement in the construction industry. Subsequently, alternatives such as hanging cable net formwork, CNC milling, and other digital fabrication methods have offered greater flexibility in designing complex geometries. However, challenges persist in scalability and understanding material properties. Despite advancements, the industry still seeks solutions to optimize design and minimize waste in construction formwork techniques. Incremental sheet forming (ISF), a versatile manufacturing technique, enables the rapid production of complex 3D shapes from sheet materials while reducing resource consumption. This research employs a 0.6mm thick aluminum alloy sheet processed with a 6-axis robotic arm, integrating digital design-to-fabrication workflow for precise control. Experiments focus on comparing ISF formwork with other digital fabrication formwork, exploring design control methods, and concluding with concrete casting. Challenges remain in understanding the interaction between concrete properties and the ISF process, especially for large-scale structures. Leveraging ISF in concrete formwork offers the potential to redefine construction practices, balancing design flexibility, sustainability, and customization. This research contributes to advancing construction methods and underscores opportunities for future research in ISF formwork applications.
keywords	Concrete Formwork, Incremental Sheet Forming, Robotic Fabrication
series	eCAADe
email
last changed	2024/11/17 22:05

_id	acadia11_144
id	acadia11_144
authors	Lavallee, Justin; Vroman, Rachel; Keshet, Yair
year	2011
title	Automated Folding of Sheet Metal Components with a Six-axis Industrial Robot
doi	https://doi.org/10.52842/conf.acadia.2011.144
source	ACADIA 11: Integration through Computation [Proceedings of the 31st Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA)] [ISBN 978-1-6136-4595-6] Banff (Alberta) 13-16 October, 2011, pp. 144-151
summary	Through the automation of folding of sheet metal components by a six-axis industrial robot we explored the integration of parametrically-driven design and fabrication tools and its real-world implementation. Developed out of research into new possibilities presented by direct programming of flexible, digitally-driven, industrial tools, this project intends to speculate about the future implementation of parametric modeling tools in the field of design, and associated new, parametrically variable, fabrication processes. We explored the relationship between designer and machine, between data and craft, and tested conjectures about scale of production, through the digital creation, physical cutting, mental tracking, robotic folding, manual riveting, and sometimes painful installation of five hundred and thirty two unique sheet metal components. Such evaluations give insight into possible trajectories for development of new models of fabrication processes, questioning the scale and intellectual scope appropriate for custom fabrication environments, and the implicit need to then evaluate the incorporation of digital craft in design pedagogy.
series	ACADIA
type	work in progress
email
last changed	2022/06/07 07:52

_id	caadria2024_233
id	caadria2024_233
authors	Lotfian, Shabnam, Belek Fialho Teixeira, Müge, Donovan, Jared and Caldwell, Glenda
year	2024
title	Diatoma: A Biomimetic Fabrication-Aware Lightweight Pavilion
doi	https://doi.org/10.52842/conf.caadria.2024.3.191
source	Nicole Gardner, Christiane M. Herr, Likai Wang, Hirano Toshiki, Sumbul Ahmad Khan (eds.), ACCELERATED DESIGN - Proceedings of the 29th CAADRIA Conference, Singapore, 20-26 April 2024, Volume 3, pp. 191–200
summary	Rethinking conventional design and fabrication methods, this research presents a biomimetic fabrication-aware design workflow for building a lightweight pavilion. Exploring different natural organisms reveals that the optimized structures of diatoms (unicellular microalgae) could serve as a biological model to design a load-responsive lightweight pavilion. The interdisciplinary research outcome primarily involves translating diatoms’ structural and symbolic logic to component modules populated on a given free-form shell. The generative design workflow enables the designer to continuously monitor quantitative metrics such as deflection, span length, number of components and joints, size and depth of components, and weight. The model is tightly intertwined with structural analysis and optimization results. The design algorithm utilizes Rhino, Grasshopper, incorporating essential plugins such as Karamba, Octopus, and Kangaroo. The proposed fabrication method is Robotic Incremental Sheet Forming (RISF), and the material is ultra-thin aluminum sheets (0.3 mm thickness). This paper’s focus is on the design phase of the research.
keywords	Biomimetic design, Diatom, Generative design, load-responsive shell, fabrication-aware design, Lightweight pavilion
series	CAADRIA
email
last changed	2024/11/17 22:05

_id	ecaade2018_298
id	ecaade2018_298
authors	Rossi, Gabriella and Nicholas, Paul
year	2018
title	Modelling A Complex Fabrication System - New design tools for doubly curved metal surfaces fabricated using the English Wheel
doi	https://doi.org/10.52842/conf.ecaade.2018.1.811
source	Kepczynska-Walczak, A, Bialkowski, S (eds.), Computing for a better tomorrow - Proceedings of the 36th eCAADe Conference - Volume 1, Lodz University of Technology, Lodz, Poland, 19-21 September 2018, pp. 811-820
summary	Standard industrialization and numeration models fail to translate the richness and complexity of traditional crafts into the making of the architectural elements, which excludes them from the industry. This paper introduces a new way of modelling a complex craft fabrication method, namely the English Wheel, that is based on the creation of a cyber-physical system. The cyber-physical system connects a robotic arm and an artificial neural network. The robot arm controls the movement of a metal sheet through the English wheel to achieve desired geometries according to toolpaths and predicted deformations specified by the neural network. The method is demonstrated through the making of 1:1 design probes of doubly curved metal surfaces.
keywords	Digital craft; metal forming; doubly curved surfaces; robotic fabrication; neural networks; cyber-physical system
series	eCAADe
email
last changed	2022/06/07 07:56

_id	cdrf2022_499
id	cdrf2022_499
authors	Yuxuan Wang, Yuran Liu, Riley Studebaker, Billie Faircloth, and Robert Stuart-Smith
year	2022
title	Ceramic Incremental Forming–A Rapid Mold-Less Forming Method of Variable Surfaces
doi	https://doi.org/https://doi.org/10.1007/978-981-19-8637-6_43
source	Proceedings of the 2022 DigitalFUTURES The 4st International Conference on Computational Design and Robotic Fabrication (CDRF 2022)
summary	Following architectural practice’s widespread adoption of 3D modelling software, the digital design of free-form surfaces has enabled more heterogeneously organized architectural assemblies. However, fabricating envelope components with double-curved surface geometry have remained a challenge, involving significant machine time and material waste, and great expense to produce. This proof-of-concept project proposes a rapid, low-cost, and minimal-waste approach to forming double curved ceramic components through a novel approach to Ceramic Incremental Forming (CIF), using a 6-axis industrial robot, a passive flexible mold, and a custom ball-rolling tool. The approach is comparable to Single Point Incremental Forming (SPIF) that is used for forming complex shapes with metal sheets. This method promises to achieve high-quality, ceramic building envelope components, while eliminating the need to build proprietary molds for each shape and reducing the waste in the forming process. Compared with other architectural mold-less forming methods such as clay 3D printing, the approach is more time and material efficient, while being able to achieve similar levels of complexity. Thus, CIF may offer potential for further development and industrial applications.
series	cdrf
email
last changed	2024/05/29 14:03

_id	caadria2021_144
id	caadria2021_144
authors	Zhu, Lufeng, Wibranek, Bastian and Tessmann, Oliver
year	2021
title	Robo-Sheets - Double-Layered Structure Based on Robot-Aided Plastic Sheet Thermoforming
doi	https://doi.org/10.52842/conf.caadria.2021.1.643
source	A. Globa, J. van Ameijde, A. Fingrut, N. Kim, T.T.S. Lo (eds.), PROJECTIONS - Proceedings of the 26th CAADRIA Conference - Volume 1, The Chinese University of Hong Kong and Online, Hong Kong, 29 March - 1 April 2021, pp. 643-652
summary	Computational design, in combination with robotic fabrication, allows the exploration of complex geometrical differentiation. Notably, thermoplastic sheet materials offer great potential for explorations in robotic fabrication due to their mailable qualities. However, the production of complex shapes from flat-sheet-thermoplastic materials usually depends on molds or on time-consuming procedures. This paper introduces a workflow for the design and fabrication of a double-curved surface made from plastic sheets, which develops a self-supporting structure through using robot-aided one-punch thermoforming. The thickness of a double-curved surface is optimized by applying the Finite Element Method. Notably, forming thermoplastic into a minimal surface strengthens its mechanical properties and this takes a relatively short period of time. According to the relationship between moment and stress in section, two connected minimal-surfaces form a three-dimensional I-profile, making it possible to construct a highly material-efficient structure. Unlike the normal form-finding process, the structure is not limited to compression-only geometry. Compared to thermoforming methods such as Single Point Incremental Forming (SPIF), our one-punch forming process described in this paper shows demonstrates high precision while being less time-consuming. Here, we present a one-to-one scale working prototype as proof of our approach.
keywords	Robotic fabrication; Plastic sheet thermoforming; Lightweight structure; Self-supporting structure; Minimal surface
series	CAADRIA
email
last changed	2022/06/07 07:57

_id	ecaade2022_403
id	ecaade2022_403
authors	Çavuº, Özlem and Alaçam, Sema
year	2022
title	Precision Factors in Modelling of Relief Patterns on Thin Aluminum Plates - Learning from making process
doi	https://doi.org/10.52842/conf.ecaade.2022.1.111
source	Pak, B, Wurzer, G and Stouffs, R (eds.), Co-creating the Future: Inclusion in and through Design - Proceedings of the 40th Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2022) - Volume 1, Ghent, 13-16 September 2022, pp. 111–120
summary	Surface coordinates on thin metal sheets constantly change during the engraving, and the digital model is not truly compatible with the physical engraving process because of the ignorance of the relationship between the hand movements with the tooltip and material in digital fabrication. Hence, this research creates experiments to learn from the physicality of the making process for precision factors in modeling relief patterns on thin aluminum plates. It questions the identification and elimination of precision problems of material and behavior in the production process of relief with a robotic arm. It aims to determine the relationships among materials, tools, and geometry in robotic manufacturing. UArm Swift Pro as a tool performs the task concerning speed, the surface of the tooltip, material thickness, drawing, and engraving modes. Created 3D geometries on aluminum surfaces are compared according to the change in distance between initial and target points, curvature, and radius of the target geometry.
keywords	Engraving, Forming, Sheet Metals, Relief Patterns, Robotic Manufacturing
series	eCAADe
email
last changed	2024/04/22 07:10

_id	acadia21_530
id	acadia21_530
authors	Adel, Arash; Augustynowicz, Edyta; Wehrle, Thomas
year	2021
title	Robotic Timber Construction
doi	https://doi.org/10.52842/conf.acadia.2021.530
source	ACADIA 2021: Realignments: Toward Critical Computation [Proceedings of the 41st Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA) ISBN 979-8-986-08056-7]. Online and Global. 3-6 November 2021. edited by S. Parascho, J. Scott, and K. Dörfler. 530-537.
summary	Several research projects (Gramazio et al. 2014; Willmann et al. 2015; Helm et al. 2017; Adel et al. 2018; Adel Ahmadian 2020) have investigated the use of automated assembly technologies (e.g., industrial robotic arms) for the fabrication of nonstandard timber structures. Building on these projects, we present a novel and transferable process for the robotic fabrication of bespoke timber subassemblies made of off-the-shelf standard timber elements. A nonstandard timber structure (Figure 2), consisting of four bespoke subassemblies: three vertical supports and a Zollinger (Allen 1999) roof structure, acts as the case study for the research and validates the feasibility of the proposed process.
series	ACADIA
type	project
email
last changed	2023/10/22 12:06

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