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	cf2013_167
id	cf2013_167
authors	Carlow, Jason F. and Kristof Crolla
year	2013
title	Shipping Complexity: Parametric Design for Remote Communities
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. 167-175.
summary	This paper presents a system for design and construction of a parametrically designed, structural shell for remote communities. It explains how, through the use of various digital software platforms, a single-layer, structural shell is designed and optimized and subsequently how a series of customized joints can be output for direct digital fabrication. As the customization is focused primary in the joints of the structure, standard dimension, locally sourced structural members can be used. By embedding assembly information onto the physical joints, the system has the capacity to simplify the construction of complex shell structures by workers with basic construction skills. Flat-packed joints can be shipped to remote sites without heavy structural members thereby reducing transportation costs and the overall embodied energy. By lowering cost and simplifying construction of large span structures, the project is intended to extend the benefits of digitally driven design to rural, remote or under-privileged communities.
keywords	Parametric design, structural shell, remote communities, embedded intelligence, digital fabrication.
series	CAAD Futures
email
last changed	2014/03/24 07:08

_id	ijac201311401
id	ijac201311401
authors	Moreno-De-Luca, Leonardo; Oscar Javier Begambre Carrillo
year	2013
title	Multi-Objective Heuristic Computation Applied To Architectural And Structural Design: A Review
source	International Journal of Architectural Computing vol. 11 - no. 4, 363-392
summary	Heuristic computation techniques have been used in a wide range of fields, demonstrating their capacity to solve highly complex optimization problems. This article presents the most common techniques and their extension into the multi-objective optimization field, and emphasizes in the application of them in structural and architectural design by presenting examples within topics like: topological, shape and dimensional optimization of truss structures, roof optimization for sunlight conditions and area minimization, grid structures, façade design, life cycle cost and environmental impact, energy efficiency and construction costs, morphogenetic structural optimization for shell structures, acoustical optimization, evolutionary architectural design, architectural layout design optimization, RC frames optimization, and land use zoning, within others. Finally, the conclusion leads to the recognition of heuristic computation not only as an optimization tool, but also as an important component of a design methodology for creating innovative, creative, efficient, well performing, and aesthetically pleasant architectural/engineering objects.
series	journal
last changed	2019/05/24 09:55

_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	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	ijac201310105
id	ijac201310105
authors	Agkathidis, Asterios and Andre_ Brown
year	2013
title	Tree-Structure Canopy:A Case Study in Design and Fabrication of Complex Steel Structures using Digital Tools
source	International Journal of Architectural Computing vol. 11 - no. 1, 87-104
summary	This paper describes and reflects on the design and manufacturing process of the Tree-Structure canopy for the WestendGate Tower in Frankfurt upon Main, completed early 2011.The project investigated fabrication and assembly principles of complex steel structures as well as the integration of contemporary computational design, engineering, optimization and simulation techniques in a collaborative design approach. This paper focuses on the notion of modular standardization as opposed to non standard customized components. It also engages with issues relating to digital production tools and their impact on construction cost, material performance and tolerances. In addition it examines the reconfiguration of liability during a planning and construction process, an aspect which can be strongly determined by fabrication companies rather than the architect or designer.This paper is written as a reflection on the complete building process when contemporary digital tools are used from design through to fabrication. It studies both the generation of the steel structure as well the ETFE cushion skin. It reports on a collaborative project, where the main author was responsible for the canopies design, parameterization, digitalization and fabrication, as well as for the dissemination of the outcomes and findings during the design and realization process.As such it represents an example of research through design in a contemporary and evolving field.The canopy received a design award by the Hellenic Architecture Association.
series	journal
last changed	2019/05/24 09:55

_id	sigradi2013_205
id	sigradi2013_205
authors	Chiarella, Mauro; Luis Felipe González Böhme; Cristian Calvo Barentin
year	2013
title	Robots: Automatización en Diseño y Construcción para la Enseñanza de Arquitectura [Robots: Automation in Design and Manufacturing for Teaching Architecture]
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. 439 - 443
summary	Industrial robots controlled by parametric design software and visual programming environments are gaining popularity in the research and use of non-conventional construction processes in architecture. Process automation which can be personalized through variable components promises to become an industry standard with similar cost structures to current pre-fabrication industrial processes. In order to incorporate competencies from non-serial variable architectural modular design, an initial teaching initiative (Advanced Architectural Design Studio – USM) was developed in Latin América. The strategy employed is based on incorporating concepts and instruments of Construction & Design Automation for CAD/CAM processes with a Six Axis Robotic Arm (KUKA KR125/2).
keywords	Robotic fabrication; Parametric modeling, Teaching architecture
series	SIGRADI
email
last changed	2016/03/10 09:48

_id	caadria2013_042
id	caadria2013_042
authors	Kaijima, Sawako; Roland Bouffanais and Karen Willcox
year	2013
title	Computational Fluid Dynamics for Architectural Design
doi	https://doi.org/10.52842/conf.caadria.2013.169
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. 169-178
summary	Computational Fluid Dynamics (CFD) is a cost-effective, well-known technique widely employed in industrial design. While indoor analysis can be achieved via CFD, Wind Tunnel Testing (WTT) is still the prevailing mode of analysis for outdoor studies. WTT is often only performed a few times during the course of a building design/construction cycle and primarily for verification purposes. This paper presents a cross-disciplinary research initiative aiming to make CFD understandable and accessible to the architecture community. Our particular interest is in the incorporation of CFD into the early stages of architectural design. Many critical decisions, including those pertaining to building performance, are made during these stages, and we believe access to wind/airflow information during these stages will help architects make responsible design decisions. As a first step, we designed a passive cooling canopy for a bus stop based on the equatorial climatic conditions of Singapore where wind/airflow was a driving factor for geometry generation. We discuss our strategies for overcoming the two bottlenecks we identified when utilising CFD for this framework: mesh generation and result comprehension/visualisation.
wos	WOS:000351496100017
keywords	CFD, Simulation, Visualization, Concept design
series	CAADRIA
email
last changed	2022/06/07 07:52

_id	sigradi2013_330
id	sigradi2013_330
authors	Leitão, António; Rita Fernandes; Luís Santos
year	2013
title	Pushing the Envelope: Stretching the limits of Generative Design
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. 235 - 238
summary	Design is characterized by change. Nowadays, addressing change in design requires enormous efforts, particularly, when the designer is exploring different solutions or when it is necessary to adapt the design to evolving constraints. This paper discusses the potential of Generative Design to help designers handling change, namely in the generation of several alternative design solutions. We propose a programming-based approach that, although requiring an initial investment, dramatically reduces the efforts of design modification. We evaluate the approach in a case study and we show that it is cost-effective in the development of an architectural design.
keywords	Design proces; Change; Modeling; Generative design; Programming
series	SIGRADI
email
last changed	2016/03/10 09:54

_id	ijac201311302
id	ijac201311302
authors	Meagher, Mark; David van der Maas, Christian Abegg, Jeffrey Huang
year	2013
title	Dynamic ornament: An investigation of responsive thermochromic surfaces in architecture
source	International Journal of Architectural Computing vol. 11 - no. 3, 301-318
summary	This paper describes the use of environmental sensor data as a basis for the design of architectural ornament that takes on a distinctive appearance in response to the atmospheric conditions where it is located. Among the goals of the project were the identification of inexpensive fabrication methods that could be used to build responsive surfaces at the scale of a room, and the identification of material and tectonic strategies for integrating dynamic information displays in buildings. A series of prototypes were constructed to explore the benefits and limitations of thermochromic ink as a material for visualizing dynamic data, and a method is proposed for building thermochromic surfaces based on printed circuit boards (PCB's) that is cost-effective and allows the fabrication of large surfaces through tiling. The limitations of this method include high power consumption, a short lifespan and difficulties in controlling the surface temperature.
series	journal
last changed	2019/05/24 09:55

_id	ecaade2013_101
id	ecaade2013_101
authors	Fukuda, Tomohiro and Taguchi, Masaharu
year	2013
title	Feature of Users’ Eye Movements during a Distributed and Synchronised VR Meeting using Cloud Computing
doi	https://doi.org/10.52842/conf.ecaade.2013.1.219
source	Stouffs, Rudi and Sariyildiz, Sevil (eds.), Computation and Performance – Proceedings of the 31st eCAADe Conference – Volume 1, Faculty of Architecture, Delft University of Technology, Delft, The Netherlands, 18-20 September 2013, pp. 219-226
summary	Owing to cloud computing Virtual Reality (cloud-VR), a note PC or tablet with no need for a high spec GPU can be used for sharing a 3D virtual space in a synchronous distributed type design meeting. This research investigates the users’ eye movements and optimization of the GUI of cloud-VR during a distributed and synchronized VR meeting. Firstly, a townscape design support system based on cloud-VR was constructed. Then, a 30-minute experiment was executed with eight subjects who wore an eye-tracking system. In conclusion, it was effective to use the eye-tracking system because meeting participants could discuss while confirming each other’s eye direction in an actual distributed and synchronized VR meeting. In scenes where a reviewer listened to a presenter’s explanation, the tendency to look at VR contents other than operation commands was observed. On the other hand, the tendency to look at operation commands about viewpoints, such as “walk-through” and “jump” to an important viewpoint location, was observed in scenes about which a reviewer argued with a presenter.
wos	WOS:000340635300022
keywords	Spatial design; distributed synchronization; cloud computing; cognitive analysis; eye-tracking.
series	eCAADe
email
last changed	2022/06/07 07:50

_id	caadria2013_049
id	caadria2013_049
authors	Lee, Ju Hyun; Ning Gu and Anthony P. Williams
year	2013
title	Exploring Design Strategy in Parametric Design to Support Creativity
doi	https://doi.org/10.52842/conf.caadria.2013.489
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. 489-498
summary	This paper deals with the generative and evolutionary aspects of parametric design. We aim to provide a better understanding of individual design strategies to support creativity in parametric design via protocol analysis. An in-depth analysis conceptualises subjects’ creative strategies into two models: problem-driven strategy and solution-driven strategy. The solution-driven strategy progress design in the solution space resulted in the highest value in the level of creativity. This is one of potential aspects of parametric design. Exploring design strategies in parametric design contributes to its effective use.
wos	WOS:000351496100048
keywords	esign strategy, Parametric design, Creativity, Protocol analysis
series	CAADRIA
email
last changed	2022/06/07 07:51

_id	ecaade2013_164
id	ecaade2013_164
authors	Nicknam, Mahsa; Bernal, Marcelo and Haymaker, John
year	2013
title	A Case Study in Teaching Construction of Building Design Spaces
doi	https://doi.org/10.52842/conf.ecaade.2013.2.595
source	Stouffs, Rudi and Sariyildiz, Sevil (eds.), Computation and Performance – Proceedings of the 31st eCAADe Conference – Volume 2, Faculty of Architecture, Delft University of Technology, Delft, The Netherlands, 18-20 September 2013, pp. 595-604
summary	Until recently, design teams were constrained by tools and schedule to only be able to generate a few alternatives, and analyze these from just a few perspectives. The rapid emergence of performance-based design, analysis, and optimization tools gives design teams the ability to construct and analyze far larger design spaces more quickly. This creates new opportunities and challenges in the ways we teach and design. Students and professionals now need to learn to formulate and execute design spaces in efficient and effective ways. This paper describes curriculum that was taught in a course “8803 Multidisciplinary Analysis and Optimization” taught by the authors at Schools of Architecture and Building Construction at Georgia Tech in spring 2013. We approach design as a multidisciplinary design space formulation and search process that seeks maximum value. To explore design spaces, student designers need to execute several iterative processes of problem formulation, generate alternative, analyze them, visualize trade space, and address decision-making. The paper first describes students design space exploration experiences, and concludes with our observations of the current challenges and opportunities.
wos	WOS:000340643600061
keywords	Design space exploration; teaching; multidisciplinary; optimization; analysis.
series	eCAADe
email
last changed	2022/06/07 07:58

_id	caadria2013_051
id	caadria2013_051
authors	Roe, Stephen
year	2013
title	Information Storm – An Assessment of Responsive Facades and Their Potential to Introduce New Relations Between Building Users and the Weather
doi	https://doi.org/10.52842/conf.caadria.2013.915
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. 915-924
summary	Today buildings are increasingly responsive to the weather. In such responsive buildings an “Open System” is emerging which consists of a coupling between buildings and their temporal environments. This paper assesses whether these new technologies, in addition to potentially reducing energy consumption, can also lead to a new experiential relation between building users and the weather. The paper qualitatively assesses current examples of Responsive Facades and their effect on the user’s experience of the weather. The information structures of the facade systems are then examined. From this analysis identify potential future avenues of research –or strategies – which may be most effective in making the weather apparent. Finally some design proposals which explore the possibilities of these strategies are presented. The paper is intended to complement the current, primarily technical, emphasis of research in this area by exploring the innovative architectural potential of Responsive Facades to create new user experiences and relations to the weather.
wos	WOS:000351496100094
keywords	Responsive facades, Weather effects, Experience
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	caadria2013_128
id	caadria2013_128
authors	Sun, Lei; Tomohiro Fukuda and Christophe Soulier
year	2013
title	A Synchronous Distributed VR Meeting with Annotation and Discussion Functions
doi	https://doi.org/10.52842/conf.caadria.2013.447
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. 447-456
summary	Owing to cloud computing Virtual Reality (VR), a note PC or tablet with no necessity of high spec GPU can be used for sharing of a 3D virtual space in a synchronous distributed type design meeting. In this paper, in addition to sharing a 3D virtual spacefor a synchronous distributed type design meeting, we developed a prototype system that enables participants to sketch or make annotations and have discussions as well as add viewpoints to them. We applied these functions to evaluate an urban landscape examination. In conclusion, the proposed method was evaluated as being effective and feasible. Operation is limited with one person, and more optional shapes should be preparedin future work.
wos	WOS:000351496100044
keywords	Spatial design, Distributed synchronization, Cloud computing, Annotation, Discussion board
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	ecaade2013_151
id	ecaade2013_151
authors	Weigele, Jakob; Schloz, Manuel; Schwinn, Tobias; Reichert, Steffen; LaMagna, Riccardo; Waimer, Frédéric; Knippers, Jan and Menges, Achim
year	2013
title	Fibrous Morphologies
doi	https://doi.org/10.52842/conf.ecaade.2013.1.549
source	Stouffs, Rudi and Sariyildiz, Sevil (eds.), Computation and Performance – Proceedings of the 31st eCAADe Conference – Volume 1, Faculty of Architecture, Delft University of Technology, Delft, The Netherlands, 18-20 September 2013, pp. 549-558
summary	Living organisms have evolved effective structural solutions in response to the inherent constraints of their respective environments through a process of morphological adaptation. Given the fact that the majority of natural load bearing materials are fibrous composites, the authors suggest the analysis of appropriate biological role models as a promising strategy for informing the application of fibre reinforced polymers (FRP) in architecture. In this paper the authors present a biomimetic design methodology for seamless large-scale FRP structures involving the analysis of the exoskeletons of Arthropoda with regards to structural performance criteria, the development of a custom robotic filament winding process, and the translation of biological and fabricational principles into the architectural domain through physical prototyping and the development of custom digital tools. The resulting performative material system is evaluated in a full-scale research pavilion.
wos	WOS:000340635300057
keywords	Biomimetics; computational design; fibre-reinforced composites; prototyping; robotic fabrication.
series	eCAADe
email
last changed	2022/06/07 07:58

_id	ecaade2013_002
id	ecaade2013_002
authors	Hanzl, Ma_gorzata
year	2013
title	Modelling of Public Spaces
doi	https://doi.org/10.52842/conf.ecaade.2013.1.319
source	Stouffs, Rudi and Sariyildiz, Sevil (eds.), Computation and Performance – Proceedings of the 31st eCAADe Conference – Volume 1, Faculty of Architecture, Delft University of Technology, Delft, The Netherlands, 18-20 September 2013, pp. 319-327
summary	The relationship between the material settings and situational belonging to a more general notion of the culture of a given community remains the subject of inquiry of at least two scientific disciplines: anthropology and urban morphology studies. In this study an assessment of the various modelling platforms is performed with the objective of finding the most efficient method which allows the description of the semiotic features of urbanscapes. The ideal system should link the parametric definition of urban geometry with the high flexibility of data input and easy manipulation. In order to enable culture related analyses of urbanscapes, analyses should be performed which refers to the semiotics of morphological structures in the detailed scale of urban enclosure, which are streets or squares. Some elements of the proposed method of index key analyses are explained as one possible solution for the problems posed.
wos	WOS:000340635300033
keywords	Urban design; urban morphology; anthropology; parametric modelling; outdoor space.
series	eCAADe
email
last changed	2022/06/07 07:49

_id	caadria2013_258
id	caadria2013_258
authors	Reinhardt, Dagmar; William Martens and Luis Miranda
year	2013
title	Sonic Domes – Solving Acoustic Performance of Curved Surfaces by Interfacing Parametric Design, Structural Engineering and Acoustic Analysis
doi	https://doi.org/10.52842/conf.caadria.2013.529
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. 529-538
summary	This paper addresses the acoustic performance of complex curved surface geometries that are commonly known to pose problems of sound concentration, thus affecting speech intelligibility and audience experience in spaces of temporal arts performance. It reviews an open system of design research in which parametric design process, structural analysis and acoustic analysis are deployed to improve the sound of ellipsoidal structures in relation to sound source and audience positions, by adapting the height, dimension and centre point of a dome structure, consequently improving the acoustic behaviour of the performance space. The paper discusses an iterative design, analysis and optimization processes, in which a number of generative form variations were developed in Grasshopper, and reworked in McNeel Rhino, tested in engineering software (Strand7), and evaluated in acoustic simulation (ODEON). This allowed an interdisciplinary team to develop, test and evolve a design proposal that shows one solution for avoiding sound concentration and consequently improving acoustic performance in complex intersecting and curved geometries of a multifunctional building.
wos	WOS:000351496100052
keywords	Parametric design, Sound concentration, Curved surfaces, Structural engineering, Acoustic simulation
series	CAADRIA
email
last changed	2022/06/07 08:00

_id	acadia13_367
id	acadia13_367
authors	Søndergaard, Asbjørn; Amir, Oded; Knauss, Michael
year	2013
title	Topology optimization and digital assembly of advanced space-frame structures
doi	https://doi.org/10.52842/conf.acadia.2013.367
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. 367-378
summary	This paper presents a novel method for the integrated design, optimization and fabrication of space-frame structures in an autonomous, digital process. Comparative numerical studies are presented, demonstrating achievable mass reduction by application of the method by comparison to equivalent to normative space truss designs and dimensions. As such, a principal digital fabrication and assembly scheme is developed, where an architectural design methodology relative to the described process is established, and the proposed process is demonstrated through scaled digital fabrication experiments.
keywords	space-frame structures, topology optimization, robotic assembly, digital fabrication, steel
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 07:56

_id	caadria2013_261
id	caadria2013_261
authors	Themistocleous, Theodoros
year	2013
title	Modelling, Simulation and Verification of Pneumatically Actuated Auxetic Systems
doi	https://doi.org/10.52842/conf.caadria.2013.395
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. 395-404
summary	This paper presents the development of an SLS 3D printed auxetic structure actuated to a predefined form by an embedded pneumatic network through an iterative process of feedback between digital simulation and physical testing. This feedback process is critical to the development of a more accurate predictive model, and to compose the geometry of the suggested structure. An approach based on the emergence of the final structure from the convergence of the behaviour of sub-structures and a methodology based on the analysis and synthesis of the simplest sub-system is the core of this research. The results indicate a promising simulation environment and a novel methodology for the design and fabrication of auxetic structures with embedded pneumatic actuation. This exploratory research suggests a fertile space for investigation within the field of adaptive architecture and soft kinetic design.
wos	WOS:000351496100039
keywords	Auxetic, Fabrication, Simulation, Pneumatic, Kinetic
series	CAADRIA
email
last changed	2022/06/07 07:58

_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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