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	ijac201310103
id	ijac201310103
authors	Bollmann, Dietrich and Alvaro Bonfiglio
year	2013
title	Design Constraint Systems - A Generative Approach to Architecture
source	International Journal of Architectural Computing vol. 11 - no. 1, 37-63
summary	Generative Architectural Design permits the automatic (or semiautomatic) generation of architectural objects for a wide range of applications, from archaeological research and reconstruction to digital sketching. In this paper the authors introduce design constraint systems (DCS), their approach to the generation of architectural design with the help of a simple example: The development of the necessary formalisms to generate a family of architectural designs, i.e. simple houses and pagodas. After explaining the formal system the authors introduce an approach for the generation of complex form based on the application of transformations and distortions.Architecture is bound by the constraints of physical reality: Gravitation and the properties of the used materials define the limits in which architectural design is possible. With the recent development of new materials and construction methods however, the ways in which form and physics go together get more complicated. As a result, the shapes of architecture gain more liberty, and more and more complex shapes and structures become possible.While these advances allow for new ways of architectural expression, they also make the design process much more challenging. For this reason new tools are necessary for making this complexity manageable for the architect and enable her to play and experiment with the new possibilities of complex shapes and structures. Design constraint systems can be used as tool for experimentation with complex form. Therefore, the authors dedicate the final part of this paper to a concise delineation of an approach for the generation of complex and irregular shapes and structures. While the examples used are simple, they give an idea of the generality of design constraint systems: By using a two-component approach to the generation of designs (the first component describes the abstract structure of the modelled objects while the second component interprets the structure and generates the actual geometric forms) and allowing the user to adjust both components freely, it can be adapted to all kind of different architectural styles, from historical to contemporary architecture.
series	journal
last changed	2019/05/24 09:55

_id	acadia13_281
id	acadia13_281
authors	Ahlquist, Sean; Menges, Achim
year	2013
title	Frameworks for Computational Design of Textile Micro-Architectures and Material Behavior in Forming Complex Force-Active Structures
doi	https://doi.org/10.52842/conf.acadia.2013.281
source	ACADIA 13: Adaptive Architecture [Proceedings of the 33rd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-926724-22-5] Cambridge 24-26 October, 2013), pp. 281-292
summary	Material behavior can be defined as the confluence of associative rules, contextual pressures and constraints of materialization. In more general terms, it can be parameterized as topologies, forces and materiality. Forming behavior means resolving the intricate matrix of deterministic and indeterministic factors that comprise and interrelate each subset of these material- nherent conditions. This requires a concise design framework which accumulates the confluent behavior through successive and cyclical exchange of multiple design modes, rather than through a single design environment or set of prescribed procedures. This paper unfolds a sequencing of individual methods as part of a larger design framework, described through the development of a series of complex hybrid- structure material morphologies. The “hybrid” nature reflects the integration of multiple force-active structural concepts within a single continuous material system, devising both self-organized yet highly articulated spatial conditions. This leads primarily to the development of what is termed a “textile hybrid” system: an equilibrium state of tensile surfaces and bending-active meshes. The research described in this paper looks to expose the structure of the textile as an indeterministic design parameter, where its architecture can be manipulated as means for exploring and differentiating behavior. This is done through experimentation with weft-knitting technologies, in which the variability of individual knit logics is instrumentalized for simultaneously articulating and structuring form. Such relationships are shown through an installation constructed at the ggggallery in Copenhagen, Denmark.
keywords	Material Behavior, Spring-based Simulation, CNC Knitting, Form- and Bending-Active, Textile Hybrid Structures.
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 07:54

_id	caadria2013_220
id	caadria2013_220
authors	Chaszar, André and José Nuno Beirão
year	2013
title	Feature Recognition and Clustering for Urban Modelling – Exploration and Analysis in GIS and CAD
doi	https://doi.org/10.52842/conf.caadria.2013.601
source	Open Systems: Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013) / Singapore 15-18 May 2013, pp. 601-610
summary	In urban planning exploration and analysis assist the generation, measurement, interpretation and management of the modelled urban environments. This frequently involves categorisation of model elements and identification of element types. Such designation of elements can be achieved through attribution (e.g. ‘tagging’ or ‘layering’) or direct selection by model users. However, for large, complex models the number and arrangement of elements makes these approaches impractical in terms of time/effort and accuracy. This is particularly true of models which include substantial numbers of elements representing existing urban fabric, rather than only newly generated elements (which might be automatically attributed during the generation process). We present methods for identification and categorisation of model elements in models of existing and proposed urban agglomerations. We also suggest how these methods can enable exploration of models, discovery of identities and relationships not otherwise obvious, and acquisition of insights to the models’ structure and contents which are not captured, and may even be obscured, by manual selection or automated pre-attribution.
wos	WOS:000351496100059
keywords	City information modelling, Data mining, Feature recognition, Geometric-content-based-search, Urban typologies
series	CAADRIA
email
last changed	2022/06/07 07:55

_id	caadria2013_256
id	caadria2013_256
authors	De Oliveira Barata, Eduardo; Dirk Anderson and Dagmar Reinhardt
year	2013
title	A Minimal Tension Canopy – Through Investigations of Self-Organised Systems
doi	https://doi.org/10.52842/conf.caadria.2013.147
source	Open Systems: Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013) / Singapore 15-18 May 2013, pp. 147-156
summary	The dynamics of a physics-based algorithm which acquires its complex organization through a number of localised interactions applied over a prescribed network can be described as a self-organised system. This in turn has the capacity to define explicit form and space based upon behavioural computational processes with an embedded structural logic. This paper discusses the way in which physics based algorithms can be used to inform the organisation of a compressional structure in a case study. Its structure is based on Hooke’s law of elasticity; which establishes a three dimensional catenary logic through a number of localised interactions applied over an entire network. This is applied to a project with specific constraints to site, boundary conditions and maximising solar gain whilst maintaining structural rigidity. The methodological approach describes the design to assembly process in which the project has been developed. This includes the applied generative design tools in order to establish the self-organised logic, the form finding process, the techniques of design documentation, the fabrication process and the logistics of construction and assembly.
wos	WOS:000351496100015
keywords	Digital fabrication and construction, Generative, Parametric, Simulation
series	CAADRIA
email
last changed	2022/06/07 07:55

_id	acadia14_229
id	acadia14_229
authors	Georgiou, Michail; Georgiou, Odysseas; Kwok, Theresa
year	2014
title	Form Complexity - Rewind \| ‘God’s Eye’ Sukkahville 2013
doi	https://doi.org/10.52842/conf.acadia.2014.229
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. 229-236
summary	A bottom-up, multidisciplinary approach, redefining design and construction of complex forms through integration of material properties, fabrication constraints and construction logistics.
keywords	Material Logics & Tectonics, Performance in Design, Computational design research and education, Practice-based and interdisciplinary computational design research, Digital fabrication and construction, New digital design concept and strategies
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 07:51

_id	sigradi2013_426
id	sigradi2013_426
authors	Gonçalves, Marly
year	2013
title	O Produto de Joias Representado Pela Ilustração Digital [Digital Illustration of Jewelry - A Teaching Methodology]
source	SIGraDi 2013 [Proceedings of the 17th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-7051-86-1] Chile - Valparaíso 20 - 22 November 2013, pp. 613 - 616
summary	This article will show learning activity developed during the third semester of Graphic Computer discipline, in the Jewelry and Accessories Production Course, from Faculty of Technological Istituto Europeo di Design in Sao Paulo, using the Problem Based Learning methodology. The present theme aims to encourage students in searching for new ways of graphics representation of his projects using 2D digital programs, based on the work done in the previous semester. The main aim is to show the contribution of an exercise in interdisciplinary training for syllabus of the course Production jewelry and accessories.
keywords	Digital illustration; Teaching methodology; Computer graphics
series	SIGRADI
email
last changed	2016/03/10 09:52

_id	caadria2013_172
id	caadria2013_172
authors	Kamath, Ayodh V.
year	2013
title	Digitally Designed Architectural Form-Built Using Craft-Based Fabrication – Weaving a Complex Surface as a Bamboo Reticulated Shell
doi	https://doi.org/10.52842/conf.caadria.2013.623
source	Open Systems: Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013) / Singapore 15-18 May 2013, pp. 623-632
summary	This paper outlines a methodology that enables the construction of complex surface forms resulting from computational design processes by manual means using non-industrial materials. The methodology is based on the craft process of weaving whereby a three-dimensional form can be produced using a flexible, linear material. Construction information from a three-dimensional digital model is communicated tocraftspersons through a set of two-dimensional drawings outlining the sequence of construction and requiring only linear dimensions.
wos	WOS:000351496100061
keywords	Digital-physical, Craft, Non-industrial materials, Weaving, Reticulated shell
series	CAADRIA
email
last changed	2022/06/07 07:52

_id	caadria2013_176
id	caadria2013_176
authors	Knapp, Chris
year	2013
title	The Hand and the Machine: A Hybrid Approach to Complex Construction in a Work of Sir Peter Cook
doi	https://doi.org/10.52842/conf.caadria.2013.633
source	Open Systems: Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013) / Singapore 15-18 May 2013, pp. 633-642
summary	This paper describes and provides a critique of the design and implementation of the “scoops” – a set of bespoke multifunctioning architectural free-form concrete elements that are a highlight of the new Soheil Abedian School of Architecture by the office of Sir Peter Cook and Gavin Robotham (CRAB). The development includes the transfer of analogue design processes into digital 3D modelling, which is then analysed and rationalized via an exchange with consultants and procurement contractors. The complexity of the concrete works necessitated the use of digital fabrication to make their implementation affordable and within time constraints, with said complexity creating a variety of challenges for many aspects of the entire delivery team. The 3D model played a critical role in communicating intent and accuracy at all stages. The use of site-based craftsmanship combined with computer aided design and fabrication overlapped to realize the project.
wos	WOS:000351496100062
keywords	In-situ concrete, 3D modelling, Rhinoceros, Peter cook, Digital fabrication
series	CAADRIA
email
last changed	2022/06/07 07:51

_id	acadia13_093
id	acadia13_093
authors	Konis, Kyle
year	2013
title	Wiring to the Sky
doi	https://doi.org/10.52842/conf.acadia.2013.093
source	ACADIA 13: Adaptive Architecture [Proceedings of the 33rd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-926724-22-5] Cambridge 24-26 October, 2013), pp. 93-100
summary	As architectural design methodologies focus increasingly on the production of dynamic form, the means to actuate these forms, the input that fuels parametric processes, analytical form-generating techniques and responsive controls is of primary concern. In the virtual test beds where systems are developed, inputs are often ad-hoc, based on crude assumptions of the environment, or disconnected from the physical environment entirely.Inverting a technique originally developed to illuminate virtual objects with light captured from real (physical) environments, this project explores image-based lighting as a means of detailed environmental light sensing. The objective of the project is to demonstrate the application of High Dynamic Range (HDR) image data acquired continuously in the physical world as signal input to inform, actuate and evaluate responsive solar control and daylighting systems. As a proof of concept, a virtual hemispherical dome consisting of 145 apertures is controlled to respond in real time to continuous image-based measurements of sky luminance, seeking a defined set of daylighting and solar control objectives. The paper concludes by discussing the implications of incorporating real-world environmental data in the development of dynamic form.
keywords	complex systems, image-based lighting, environmental adaptation
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 07:51

_id	acadia13_253
id	acadia13_253
authors	Krieg, Oliver David; Menges, Achim
year	2013
title	HygroSkin: A climate-responsive prototype project based on the elastic and hygroscopic properties of wood
doi	https://doi.org/10.52842/conf.acadia.2013.023
source	ACADIA 13: Adaptive Architecture [Proceedings of the 33rd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-926724-22-5] Cambridge 24-26 October, 2013), pp. 23-260
summary	The paper presents current research into architectural potentials of robotic fabrication in wood construction based on elastically bent timber sheets with robotically fabricated finger joints. Current developments in computational design and digital fabrication propose an integrative design approach contrary to classical, hierarchical architectural design processes. Architecture related fields, such as material science, engineering and fabrication have been seen as separate disciplines in a linear design process since the Industrialization era. However, current research in computational design reveals the potentials of their integration and interconnection for the development of material-oriented and performance-based architectural design.In the first part, the paper discusses the potentials of robotic fabrication based on its extended design space. The robot’s high degree of kinematic freedom opens up the possibility of developing complex and highly performative mono-material connections for wood plate structures. In the second part, the integration of material behavior is presented. Through the development of robotically fabricated, curved finger joints, that interlock elastically bent plywood sheets, a bending-active construction system is being developed (Figure 1,Figure 2). In the third part, the system’s architectural application and related constructional performance is discussed.
keywords	Robotic Fabrication; Finger Joints; Material Computation; Wood Construction; Computational Design
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 07:51

_id	acadia13_429
id	acadia13_429
authors	Parascho, Stefana; Baur, Marco; Baharlou, Ehsan; Knippers, Jan; Menges, Achim
year	2013
title	Agent-Based Model for the Development of Integrative Design Tools
doi	https://doi.org/10.52842/conf.acadia.2013.429
source	ACADIA 13: Adaptive Architecture [Proceedings of the 33rd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-926724-22-5] Cambridge 24-26 October, 2013), pp. 429-430
summary	The project describes the development of a tool for implementing integrative design processes based on an agent-based system and used for the generation of freeform structures.
keywords	agent-based model, integrative design, self-organization, complex systems
series	ACADIA
type	Research Poster
email
last changed	2022/06/07 08:00

_id	caadria2013_098
id	caadria2013_098
authors	Park, Jong Jin and Bharat Dave
year	2013
title	Bio-Inspired Adaptive Stadium Façades – An Evolution-Based Design Exploration
doi	https://doi.org/10.52842/conf.caadria.2013.107
source	Open Systems: Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013) / Singapore 15-18 May 2013, pp. 107-116
summary	Our research focuses on bio-inspired evolutionary design based on genetic algorithms to explore façade surfacesthat improve adaptivity and solar performance of stadium design during the early stages of design development. This paper describes prototype implementation of an automated computer design system, its architecture, and initial results. Our approach highlights importance of early exploration of architectural geometries by rapidly narrowing down optimised design solutions within an infinite search space of possible design solutions. Additionally, the prototype supports automatic generation of design variations and demonstrates potential use of genetic algorithms as a means to constrained design exploration.
wos	WOS:000351496100011
keywords	Adaptive façades, Evolutionary design, Genetic algorithm, Performance simulations
series	CAADRIA
email
last changed	2022/06/07 08:00

_id	acadia13_051
id	acadia13_051
authors	Ramirez-Figueroa, Carolina; Dade-Robertson, Martyn; Hernan, Luis
year	2013
title	Adaptive Morphologies: Toward a Morphogenesis of Material Construction
doi	https://doi.org/10.52842/conf.acadia.2013.051
source	ACADIA 13: Adaptive Architecture [Proceedings of the 33rd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-926724-22-5] Cambridge 24-26 October, 2013), pp. 51-60
summary	Architectural discourse has recently suggested a new material practice derived from advances in the field of synthetic biology. As biological organisms can now be designed and engineered for specific purposes, it is expected that, in the near future, it will be possible to program even more complex biologically based systems. One potential application is to literally grow buildings by programming cellular organisms to fabricate and deposit material into architecturally relevant patterns. Our current design methods do not anticipate the potentially challenging material practice involved in a biologically engineered architecture, where there is a loose and emergent relationship between design and material articulation. To tackle this conflict, we developed SynthMorph, a form-finding computational tool based on basic biological morphogenetic principles. A reflection is offered on its use, discussing the effect of multicellular morphogenesis on the production of shape. We conclude that such a strategy is an adaptive design method in two ways: (a) the mechanics of design using morphological constraints involve a practice of dynamic and continuous negotiation between a design intent and material emergence, and (b) the proposed design strategy hints at the production of a biologically produced architecture, which would potentially behave as an adaptive organism.
keywords	complex systems, synthetic biology, self-assembly, emergence, morphogenesis, synthetic morphology
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 08:00

_id	ascaad2022_099
id	ascaad2022_099
authors	Sencan, Inanc
year	2022
title	Progeny: A Grasshopper Plug-in that Augments Cellular Automata Algorithms for 3D Form Explorations
source	Hybrid Spaces of the Metaverse - Architecture in the Age of the Metaverse: Opportunities and Potentials [10th ASCAAD Conference Proceedings] Debbieh (Lebanon) [Virtual Conference] 12-13 October 2022, pp. 377-391
summary	Cellular automata (CA) is a well-known computation method introduced by John von Neumann and Stanislaw Ulam in the 1940s. Since then, it has been studied in various fields such as computer science, biology, physics, chemistry, and art. The Classic CA algorithm is a calculation of a grid of cells' binary states based on neighboring cells and a set of rules. With the variation of these parameters, the CA algorithm has evolved into alternative versions such as 3D CA, Multiple neighborhood CA, Multiple rules CA, and Stochastic CA (Url-1). As a rule-based generative algorithm, CA has been used as a bottom-up design approach in the architectural design process in the search for form (Frazer,1995; Dinçer et al., 2014), in simulating the displacement of individuals in space, and in revealing complex relations at the urban scale (Güzelci, 2013). There are implementations of CA tools in 3D design software for designers as additional scripts or plug-ins. However, these often have limited ability to create customized CA algorithms by the designer. This study aims to create a customizable framework for 3D CA algorithms to be used in 3D form explorations by designers. Grasshopper3D, which is a visual scripting environment in Rhinoceros 3D, is used to implement the framework. The main difference between this work and the current Grasshopper3D plug-ins for CA simulation is the customizability and the real-time control of the framework. The parameters that allow the CA algorithm to be customized are; the initial state of the 3D grid, neighborhood conditions, cell states and rules. CA algorithms are created for each customizable parameter using the framework. Those algorithms are evaluated based on the ability to generate form. A voxel-based approach is used to generate geometry from the points created by the 3D cellular automata. In future, forms generated using this framework can be used as a form generating tool for digital environments.
series	ASCAAD
email
last changed	2024/02/16 13:38

_id	caadria2013_151
id	caadria2013_151
authors	Simeone, Davide; Yehuda E. Kalay and Davide Schaumann
year	2013
title	Using Game-Like Narrative to Simulate Human Behaviour in Built Environments
doi	https://doi.org/10.52842/conf.caadria.2013.199
source	Open Systems: Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013) / Singapore 15-18 May 2013, pp. 199-208
summary	Predicting future users’ behaviour and their activities in a building is a highly complex task that designers have to face during the design process. Despite its importance, few methods exist that can predict and help evaluate this type of building performance during the design process itself. Simulative approaches are gradually overcoming this shortcoming, but at present their application is limited to the representation of specific occurrences and behavioural performance aspects, such as emergency egress. Based on current developments in the video game industry, our research aims to establish a new approach to human behaviour simulation in built environments, based on a clear and reliable representation of the use processes occurring in a building. At its core is simulation based on the notion of events, defined as active entities on their own, comprised of space, people, and activities. These events entities are structured into collections called narratives, which represent and allow the simulation of the step-by-step performing of activities by users in a built environment.
wos	WOS:000351496100020
keywords	Human behaviour simulation, Building-user interaction, Prediction and evaluation, Event model, Game narrative
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	caadria2013_011
id	caadria2013_011
authors	Sousa, José Pedro and João Pedro Xavier
year	2013
title	Symmetry-Based Generative Design: A Teaching Experiment
doi	https://doi.org/10.52842/conf.caadria.2013.303
source	Open Systems: Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013) / Singapore 15-18 May 2013, pp. 303-312
summary	Throughout history, symmetry has been widely explored as a geometric strategy to conceive architectural forms and spaces. Nonetheless, its concept has changed and expanded overtime, and its design exploration does not mean anymore the generation of simple and predictable solutions. By framing in history this idea, the present paper discusses the relevance of exploring symmetry in architectural design today, by means of computational design and fabrication processes. It confirms the emergence of a renewed interest in the topic based on two main ideas: On the one hand, symmetry-based design supports the generation of unique and apparent complex solutions out of simple geometric rules, in a bottom-up fashion. On the other hand, despite this intricacy, it assures modularity in the design components, which can bring benefits at the construction level. As the background for testing and illustrating its theoretical arguments, this paper describes the work produced in the Constructive Geometry course at FAUP.
wos	WOS:000351496100030
keywords	Geometry, Symmetry, Computational design, Digital manufacturing, Education
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	acadia13_379
id	acadia13_379
authors	Tamke, Martin; Stasiuk, David; Ramsgard Thomsen, Mette
year	2013
title	The Rise – Material Behaviour in Generative Design
doi	https://doi.org/10.52842/conf.acadia.2013.379
source	ACADIA 13: Adaptive Architecture [Proceedings of the 33rd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-926724-22-5] Cambridge 24-26 October, 2013), pp. 379-388
summary	The research-based installation, The Rise, is led by the concept of a growing architecture able to sense and dynamically adapt to its environment as it grows into form while continuously reacting to its own material performance and behavioural constraints. This process is enabled through the careful integration of digital simulation techniques with multi-hierarchical generative design approaches. Aggregations of variably sized bundles of rattan core multiply, bend, branch and recombine into a distributed assembly that manifests an alternative to traditional structural systems. The hybrid approach links a material system with simulation and the iterative generation of geometry through a process of calibration at different stages of design. The project leverages emerging computational strategies for growth in a model for an architectural practice that engages the complexity and interdependencies that characterise a contemporary design practice.
keywords	complex systems, material behaviour, simulation, generative design, growth patterns, environmental aware design systems
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 07:56

_id	cf2013_245
id	cf2013_245
authors	Wang, Shuo
year	2013
title	Application of BIM and VR Technology in Complex Construction Project: A Case Study of Iceberg 3d BIM Structure Layout Design for an Ocean Park
source	Global Design and Local Materialization[Proceedings of the 15th International Conference on Computer Aided Architectural Design Futures / ISBN 978-3-642-38973-3] Shanghai, China, July 3-5, 2013, pp. 245-255.
summary	BIM and VR are playing more and more important roles in architecture and engineering design, implementation, management and many other domains. With iceberg 3d structure layout design of an ocean park as example, this paper explores the application of VR and BIM technologies in complex construction projects. In the paper, the laser scanning technology, point cloud processing, BIM model creation based on the Revit software and the specific applications of VR technology are described and discussed.
keywords	BIM , VR, Structure Layout Design
series	CAAD Futures
email
last changed	2014/03/24 07:08

_id	ecaade2023_317
id	ecaade2023_317
authors	Zamani, Alireza, Mohseni, Alale and Bertug Çapunaman, Özgüç
year	2023
title	Reconfigurable Formwork System for Vision-Informed Conformal Robotic 3D Printing
doi	https://doi.org/10.52842/conf.ecaade.2023.1.387
source	Dokonal, W, Hirschberg, U and Wurzer, G (eds.), Digital Design Reconsidered - Proceedings of the 41st Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2023) - Volume 1, Graz, 20-22 September 2023, pp. 387–396
summary	Robotic additive manufacturing has garnered significant research and development interest due to its transformative potential in architecture, engineering, and construction as a cost-effective, material-efficient, and energy-saving fabrication method. However, despite its potential, conventional approaches heavily depend on meticulously optimized work environments, as robotic arms possess limited information regarding their immediate surroundings (Bechthold, 2010; Bechthold & King, 2013). Furthermore, such approaches are often restricted to planar build surfaces and slicing algorithms due to computational and physical practicality, which consequently limits the feasibility of robotic solutions in scenarios involving complex geometries and materials. Building on previous work (Çapunaman et al., 2022), this research investigates conformal 3D printing of clay using a 6 degrees-of-freedom robot arm and a vision-based sensing framework on parametrically reconfigurable tensile hyperbolic paraboloid (hypar) formwork. In this paper, we present the implementation details of the formwork system, share findings from preliminary testing of the proposed workflow, and demonstrate application feasibility through a design exercise that aims to fabricate unique components for a poly-hypar surface structure. The formwork system also offers parametric control over generating complex, non-planar tensile surfaces to be printed on. Within the scope of this workflow, the vision-based sensing framework is employed to generate a digital twin informing iterative tuning of the formwork geometry and conformal toolpath planning on scanned geometries. Additionally, we utilized the augmented fabrication framework to observe and analyze deformations in the printed clay body that occurs during air drying. The proposed workflow, in conjunction with the vision-based sensing framework and the reconfigurable formwork, aims to minimize time and material waste in custom formwork fabrication and printing support materials for complex geometric panels and shell structures.
keywords	Robotic Fabrication, Conformal 3D Printing, Additive Manufacturing, Computer-Vision, Reconfigurable Formwork
series	eCAADe
email
last changed	2023/12/10 10:49

_id	acadia20_114p
id	acadia20_114p
authors	Zivkovic, Sasa; Havener, Brian; Battaglia, Christopher
year	2020
title	Log Knot
source	ACADIA 2020: Distributed Proximities / Volume II: Projects [Proceedings of the 40th Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA) ISBN 978-0-578-95253-6]. Online and Global. 24-30 October 2020. edited by M. Yablonina, A. Marcus, S. Doyle, M. del Campo, V. Ago, B. Slocum. 114-119.
summary	Log Knot, developed by the Robotic Construction Laboratory (RCL) at Cornell University, is a robotically fabricated architectural installation that establishes a method for variable compound timber curvature creation utilizing both regular and irregular roundwood geometries. Moreover, the project develops methods for minimal formwork assembly and moment force optimization of customized mortise and tenon joints. Following the logic of a figure-8 knot, the project consists of an infinite loop of roundwood, curving three-dimensionally along its length. There are a variety of techniques to generate single curvature in wood structures – such as steam bending (Wright et al., 2013) or glue lamination (Issa and Kmeid, 2005) – but only a few techniques to generate complex curvature from raw material within a single wooden structural element exist. To construct complex curvature, the research team developed a simple method that can easily be replicated. First, the log is compartmentalized, establishing a series of discrete parts. Second, the parts are reconfigured into a complex curvature “whole” by carefully manipulating the assembly angles and joints between the logs. Timber components reconfigured in such a manner can either follow planar curvature profiles or spatial compound curvature profiles. Based on knowledge gained from the initial joinery tests, the research team developed a custom tri-fold mortise and tenon joint, which is self-supportive during assembly and able to resist bending in multiple directions. Using the tri-fold mortise and tenon joint, a number of full-scale prototypes were created to test the structural capacity of the overall assembly. Various structural optimization protocols are deployed in the Log Knot project. While the global knot form is derived from spatial considerations – albeit within the structurally sound framework of a closed-loop knot structure – the project is structurally optimized at a local level, closely calibrating structural cross-sections, joinery details, and joint rotation in relation to prevailing load conditions.
series	ACADIA
type	project
email
last changed	2021/10/26 08:03

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