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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Hits 1 to 11 of 11

_id ecaade2017_277
id ecaade2017_277
authors Borhani, Alireza and Kalantar, Negar
year 2017
title APART but TOGETHER - The Interplay of Geometric Relationships in Aggregated Interlocking Systems
source Fioravanti, A, Cursi, S, Elahmar, S, Gargaro, S, Loffreda, G, Novembri, G, Trento, A (eds.), ShoCK! - Sharing Computational Knowledge! - Proceedings of the 35th eCAADe Conference - Volume 1, Sapienza University of Rome, Rome, Italy, 20-22 September 2017, pp. 639-648
summary In this research, the authors discuss multiple design process criteria, fabrication methods, and assembly workflows for covering spaces using discrete pieces of material shorter than the space's span, otherwise known as topologically interlocking structures. To expand this line of research, the study challenges the interplay of geometric relationships in the assembly of unreinforced and mortar-less structures that work purely under compressive forces. This work opens with a review of studies concerning topological interlocking, a unique type of material and structural system. Then, through a description of two design projects - an interlocking footbridge and a vaulted structure - the authors demonstrate how they encouraged students to engage in a systematic exploration of the generative relationships among surface geometry, the configuration and formal variations of its subdividing cells, and the stability of the final interlocking assembly. In this fashion, the authors argue that there is hope for carrying the design criteria of topological interlocking systems into the production of precast concrete structures.
keywords Topological Interlocking Assembly, Digital Stereotomy, Compression-Only Vaulted Structures, Surface Tessellation, Digital Materiality.
series eCAADe
last changed 2017/09/13 13:13

_id caadria2009_146
id caadria2009_146
authors Fagerström, Gustav
year 2009
title Dynamic Relaxation of Tensegrity Structures
source Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 553-562
summary The structural hierarchy inherent to tensegrities enables a building skin that performs on multiple levels simultaneously. While having one function in the global building mechanics, its individual components can work as self-contained systems balancing tensile and compressive forces locally within them. The behavior of elements under load is linear and thus describable analytically. When these are aggregated in a tensegrity however, the performance of the assembly as a whole is non-linear. In order to investigate further these relationships a method of dynamic relaxation will be developed. This tool allows for simulation and load analysis of a complex tensegrous network, based on the relationships between force, stiffness and dimension formulated by Young and the computational means provided by a parametric/associative modeling environment. This research investigates the possible formfinding through computational means of a double-layer tensegrity grid.
keywords Dynamic; relaxation; tensegrity; form finding
series CAADRIA
last changed 2012/05/30 19:29

_id ecaadesigradi2019_465
id ecaadesigradi2019_465
authors Ghazvinian, Ali, Farrokhsiar, Paniz, Vieira, Fabricio, Pecchia, John and Gursoy, Benay
year 2019
title Mycelium-Based Bio-Composites For Architecture:Assessing the Effects of Cultivation Factors on Compressive Strength
source Sousa, JP, Xavier, JP and Castro Henriques, G (eds.), Architecture in the Age of the 4th Industrial Revolution - Proceedings of the 37th eCAADe and 23rd SIGraDi Conference - Volume 2, University of Porto, Porto, Portugal, 11-13 September 2019, pp. 505-514
summary Mycelium-based bio-composites can propose a renewable and biodegradable alternative for architectural construction materials. These biomaterials result from growth of mycelium, fibrous root systems of fungi, on organic substrates in controlled environmental conditions. This paper presents a material study that explores how substrate type and added supplements used for cultivating mycelium affect the compressive strength of mycelium-based composites for use as masonry units in architectural construction. For this purpose, samples grown using Pleurotus Ostreatus (Gray Oyster mushroom strain) on three different substrates (sawdust, straw and a mixture of sawdust and straw) with and without supplementation are tested for compressive strength.
keywords mycelium; biodesign; biomaterials; masonry; compressive strength
series eCAADeSIGraDi
last changed 2019/08/26 20:27

_id acadia15_81
id acadia15_81
authors Hussein, Ahmed
year 2015
title Sandworks / Sand Tectonic Prototype
source ACADIA 2105: Computational Ecologies: Design in the Anthropocene [Proceedings of the 35th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-53726-8] Cincinnati 19-25 October, 2015), pp. 81-94
summary This paper outlines a material based research that proposes a time-based architecture that extends Frei Otto’s research of sand formations using sand’s natural angle of repose. The tectonic system focuses on developing compressive structures of sand for hot climate desert areas through a zero-waste formative process whose architecture reorganizes materials naturally available on the site. Formations are hardened as a surface through the phase changing properties of a saline solution which crystallizes when cooled, bonding with the sand. The proportion of insulation material defines the building life span redistributes the materials back into its environment at the end of its cycle. The materiality and spatial qualities of the project are based on the conical and constant angle surfaces generated through the gravitational process of sand formation. Between the digital opportunities of sand formation and its physical possibilities, this paper outlines the analogue-digital methods of sand computation through a comprehensive study in four main sections; material system, material computation, design system and robotic fabrication.
keywords Material computation, analogues digital methods, Sand, Digital design and robotic fabrication, ecological tectonic system
series ACADIA
type normal paper
last changed 2016/08/05 11:37

_id acadia11_114
id acadia11_114
authors Kaczynski, Maciej P; McGee, Wes; Pigram, David
year 2011
title Robotically Fabricated Thin-shell Vaulting: A method for the integration of multi-axis fabrication processes with algorithmic form-finding techniques
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. 114-121
summary This paper proposes and describes a new methodology for the design, fabrication, and construction of unreinforced thin-shell stone vaulting through the use of algorithmic form-finding techniques and multi-axis robotic water jet cutting. The techniques build upon traditional thin-shell masonry vaulting tectonics to produce a masonry system capable of self-support during construction. The proposed methodology expands the application of thin-shell vaulting to irregular forms, has the potential to reduce the labor cost of vault construction, and opens the possibility of response to external factors such as siting constraints and environmental criteria. The intent of the research is to reignite and reanimate unreinforced compressive masonry vaulting as a contemporary building practice.
keywords masonry vaulting; robotic fabrication; water-jet cutting; multi-axis fabrication; dynamic relaxation; file-to-factory; form-finding; self-supporting; parametric modeling; computational design
series ACADIA
type normal paper
last changed 2011/10/06 04:05

_id caadria2019_173
id caadria2019_173
authors Ng, Jonathan Ming-En, Ho, Samuel Yu De, Ng, Truman Wei Cheng, Soh, Jia Ying and Dritsas, Stylianos
year 2019
title Fabrication of Ultra-Lightweight Parametric Glass Fiber Reinforced Shell Assemblies
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. 13-22
summary We present an experimental form-finding technique for ultra-thin glass fiber reinforced concrete components and assemblies. The objective is to challenge conventional concrete use in construction, often perceived as a massive and compressive structural material. Instead, we targeted production of fine shell assemblies principally operating in tension. To achieve thin profile components, we use a compliant molding technique where premixed GFRC is cast in polyethylene bags. Subsequently, a robotic arm system pins the bags on a substrate plate and the setup is inverted whereby gravity induces a curvature to components while concrete cures. Use of parametric modeling, computer simulation and statistical experimental methods allowed us to understand the behavior of the material process and translate computationally modeled designs into physical artifacts. We discuss the opportunity for digital fabrication methods to fuse with traditional form-finding techniques, contrast the use of computational modeling techniques and present a series of prototypes created through our process.
keywords Digital Fabrication; Glass Fibre Reinforced Concrete; Form-Finding
series CAADRIA
last changed 2019/04/16 08:22

_id acadia17_522
id acadia17_522
authors Sarafian, Joseph; Culver, Ronald; Lewis, Trevor S.
year 2017
title Robotic Formwork in the MARS Pavilion: Towards The Creation Of Programmable Matter
source ACADIA 2017: DISCIPLINES & DISRUPTION [Proceedings of the 37th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-96506-1] Cambridge, MA 2-4 November, 2017), pp. 522- 533
summary The proliferation of parametric tools has allowed for the design of previously impossible geometry, but the construction industry has failed to keep pace. We demonstrate the use of industrial robots to disrupt the ancient process of casting concrete and create an adjustable formwork capable of generating various cast components based on digital input, crafting a new approach to “programmable matter.” The resulting research delineates a novel methodology to facilitate otherwise cost-prohibitive, even impossible design. The MARS Pavilion employs this methodology in a building-sized proof of concept where manipulating fabric with industrial robots achieves previously unattainable precision while casting numerous connective concrete components to form a demountable lattice structure. The pavilion is the result of parametric form finding, in which a catenary structure ensures that the loads are acting primarily in compression. Every concrete component is unique, yet can be assembled together with a 1/16-inch tolerance. Expanding Culver & Sarafian’s previous investigations, industrial robot arms are sent coordinates to position fabric sleeves into which concrete is poured, facilitating a rapid digital-to-physical casting process. With this fabrication method, parametric variation in design is cost-competitive relative to other iterative casting techniques. This digital breakthrough necessitated analogue material studies of rapid-setting, high-strength concrete and flexible, integral reinforcing systems. The uniquely shaped components are coupled with uniform connectors designed to attach three limbs of concrete, forming a highly stable, compressive hex-grid shell structure. A finite element analysis (FEA) was a critical step in the structural engineering process to simulate various load scenarios on the pavilion and drive the shape of the connective elements to their optimal form.
keywords material and construction; fabrication; form finding
series ACADIA
last changed 2017/10/17 09:13

_id ecaade2012_52
id ecaade2012_52
authors Thomsen, Mette Ramsgard; Bech, Karin; Sigurdardottir, Kristjana
year 2012
title Textile Logics in a Digital Architecture
source Achten, Henri; Pavlicek, Jiri; Hulin, Jaroslav; Matejovska, Dana (eds.), Digital Physicality - Proceedings of the 30th eCAADe Conference - Volume 2 / ISBN 978-9-4912070-3-7, Czech Technical University in Prague, Faculty of Architecture (Czech Republic) 12-14 September 2012, pp. 621-628
wos WOS:000330320600067
summary This paper questions the representational logics of a new class of digital-material practices incorporating material performance. Presenting the concept of ‘textile logic’, the paper discusses how computational design tools that allow for a parametrisation of material behaviour are foregrounding the examination of structural principles that lie outside traditional compressive logic. By pointing to the structural thinking of Vladimir Shukhov, Buckminster Fuller and Robert Le Ricolais, as well as contemporary practitioners such as Cecil Balmond and Peter Testa the paper examines the precedents for incorporating tensile self-bracing as a structural principle and how textiles can become a model for architectural design. The paper presents the research by design enquiry ‘Shadow Play’ examining the involved traditions, methods and material practices of textile design and the here embedded systems of material specification can be advantageously ported to digital design.
keywords Digital design practice; textiles; structural design; material behaviour
series eCAADe
last changed 2014/04/14 11:07

_id caadria2013_057
id caadria2013_057
authors Turakhia, Dishita G.
year 2013
title Dynamic Tensegrity Systems – Investigating a Case in Reconfigurable Habitable Structures
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. 97-106
wos WOS:000351496100010
summary Irregular tensegrity structures, due to their non-linear behaviour, possess the potential ability to configure in multiple stable states. The kinematics and inherent properties of the compressive and tensile components govern the final static configuration of the system. The primary objective of the research is to study the non-linear behaviour of irregular tensegrity structures and formulate a computational generative, evaluative and algorithmic method to design a structurally dynamic tensegrity system, with inherent potential to adapt to the varying contexts and its respective demands, requirements and spatial needs.  
keywords ensegrity, Non-linear systems, Dynamic, Generative algorithm, Reconfigurable structures 
series CAADRIA
last changed 2016/05/16 09:08

_id ecaadesigradi2019_508
id ecaadesigradi2019_508
authors Yenice, Yagmur and Park, Daekwon
year 2019
title V-INCA - Designing a smart geometric configuration for dry masonry wall
source Sousa, JP, Xavier, JP and Castro Henriques, G (eds.), Architecture in the Age of the 4th Industrial Revolution - Proceedings of the 37th eCAADe and 23rd SIGraDi Conference - Volume 2, University of Porto, Porto, Portugal, 11-13 September 2019, pp. 515-520
summary Soil is still used as a building material in many parts of the world, especially in rural areas. Approximately 30% of the world's population is still living in shelters made by soil (Berge 2009). One of the techniques is using soil in mudbrick form, which is sun dried instead of being fired in kilns. However, mud bricks have low compressive and tensile strength. Instead of enhancing the mix formula, we focus on designing the geometry of the brick itself to improve walls' overall compressive and tensile strength. The goal of the research is to explore an innovative way to build masonry walls through geometrical examination together with computer aided design. Unlike traditional horizontal laying of the rectangular brick elements, 3D designed blocks take advantage of gravity and foster an accelerated assembly without mortar. They create a balance point in the middle of the wall during the construction. The geometry of V-INCA blocks allows dry construction which will reduce the amount of time spent on the site. Load distribution and the friction between two surfaces are sufficient to have a dry construction. Thus, a wall built with V-INCA is stronger intrinsically due to its geometry.
keywords Dry masonry construction; smart geometrical design; on-site material; compressed earth blocks; Inca masonry
series eCAADeSIGraDi
last changed 2019/08/26 20:27

_id caadria2018_273
id caadria2018_273
authors Yuan, Philip F., Wang, Xiang and Wang, Xiang
year 2018
title Cellular Cavity Structure and its Application on a Long-Span Form-Found Shell Design
source T. Fukuda, W. Huang, P. Janssen, K. Crolla, S. Alhadidi (eds.), Learning, Adapting and Prototyping - Proceedings of the 23rd CAADRIA Conference - Volume 1, Tsinghua University, Beijing, China, 17-19 May 2018, pp. 297-306
summary This paper shows a design and building application of a novel structure concept which is presented and developed by the author. The form-found pavilion demonstrates the validity of the design methodology and the related technical details of the design and fabrication process in an arbitrary design domain. The large pavilion (7m*6m*2.5m) with only 1mm paperboard also shows the great potentials of the thin sheet materials to be used in shell structure designs. The structural concept is based on the spatial tessellation of shell spaces into groups of cellular cavities. The cellular cavity is mainly composed of two curved membranes and the circumferential ribs. Both global and local membrane actions can be activated by the use of materials as thin as 1mm. Based on the structural analysis of the foregoing pavilion, the structural behavior is discussed in detail with a physical compressive test of the different group of cellular cavities. The assembly process of the pavilion is discussed with a prototype in full scale. As a successful efficient paper-shell structure, this pavilion demonstrates the structural concept and could inspire the potentials of thin materials for future shell designs.
keywords Cellular Cavity Structure; Shell Structure; Thin Paperboard; Large Pavilion Design; Parametric Design Method
series CAADRIA
last changed 2018/05/17 07:08

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