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	ascaad2016_014
id	ascaad2016_014
authors	Ahmed, Zeeshan Y.; Freek P. Bos, Rob J.M. Wolfs and Theo A.M. Salet
year	2016
title	Design Considerations Due to Scale Effects in 3D Concrete Printing
source	Parametricism Vs. Materialism: Evolution of Digital Technologies for Development [8th ASCAAD Conference Proceedings ISBN 978-0-9955691-0-2] London (United Kingdom) 7-8 November 2016, pp. 115-124
summary	The effect of scale on different parameters of the 3D printing of concrete is explored through the design and fabrication of a 3D concrete printed pavilion. This study shows a significant gap exists between what can be generated through computer aided design (CAD) and subsequent computer aided manufacturing (generally based on CNC technology). In reality, the 3D concrete printing on the one hand poses manufacturing constraints (e.g. minimum curvature radii) due to material behaviour that is not included in current CAD/CAM software. On the other hand, the process also takes advantage of material behaviour and thus allows the creation of shapes and geometries that, too, can’t be modelled and predicted by CAD/CAM software. Particularly in the 3D printing of concrete, there is not a 1:1 relation between toolpath and printed product, as is the case with CNC milling. Material deposition is dependent on system pressure, robot speed, nozzle section, layer stacking, curvature and more – all of which are scale dependent. This paper will discuss the design and manufacturing decisions based on the effects of scale on the structural design, printed and layered geometry, robot kinematics, material behaviour, assembly joints and logistical problems. Finally, by analysing a case study pavilion, it will be explore how 3D concrete printing structures can be extended and multiplied across scales and functional domains ranging from structural to architectural elements, so that we can understand how to address questions of scale in their design.
series	ASCAAD
email
last changed	2017/05/25 13:31

_id	cdrf2023_526
id	cdrf2023_526
authors	Eric Peterson, Bhavleen Kaur
year	2023
title	Printing Compound-Curved Sandwich Structures with Robotic Multi-Bias Additive Manufacturing
doi	https://doi.org/https://doi.org/10.1007/978-981-99-8405-3_44
source	Proceedings of the 2023 DigitalFUTURES The 5st International Conference on Computational Design and Robotic Fabrication (CDRF 2023)
summary	A research team at Florida International University Robotics and Digital Fabrication Lab has developed a novel method for 3d-printing curved open grid core sandwich structures using a thermoplastic extruder mounted on a robotic arm. This print-on-print additive manufacturing (AM) method relies on the 3d modeling software Rhinoceros and its parametric software plugin Grasshopper with Kuka-Parametric Robotic Control (Kuka-PRC) to convert NURBS surfaces into multi-bias additive manufacturing (MBAM) toolpaths. While several high-profile projects including the University of Stuttgart ICD/ITKE Research Pavilions 2014–15 and 2016–17, ETH-Digital Building Technologies project Levis Ergon Chair 2018, and 3D printed chair using Robotic Hybrid Manufacturing at Institute of Advanced Architecture of Catalonia (IAAC) 2019, have previously demonstrated the feasibility of 3d printing with either MBAM or sandwich structures, this method for printing Compound-Curved Sandwich Structures with Robotic MBAM combines these methods offering the possibility to significantly reduce the weight of spanning or cantilevered surfaces by incorporating the structural logic of open grid-core sandwiches with MBAM toolpath printing. Often built with fiber reinforced plastics (FRP), sandwich structures are a common solution for thin wall construction of compound curved surfaces that require a high strength-to-weight ratio with applications including aerospace, wind energy, marine, automotive, transportation infrastructure, architecture, furniture, and sports equipment manufacturing. Typical practices for producing sandwich structures are labor intensive, involving a multi-stage process including (1) the design and fabrication of a mould, (2) the application of a surface substrate such as FRP, (3) the manual application of a light-weight grid-core material, and (4) application of a second surface substrate to complete the sandwich. There are several shortcomings to this moulded manufacturing method that affect both the formal outcome and the manufacturing process: moulds are often costly and labor intensive to build, formal geometric freedom is limited by the minimum draft angles required for successful removal from the mould, and customization and refinement of product lines can be limited by the need for moulds. While the most common material for this construction method is FRP, our proof-of-concept experiments relied on low-cost thermoplastic using a specially configured pellet extruder. While the method proved feasible for small representative examples there remain significant challenges to the successful deployment of this manufacturing method at larger scales that can only be addressed with additional research. The digital workflow includes the following steps: (1) Create a 3D digital model of the base surface in Rhino, (2) Generate toolpaths for laminar printing in Grasshopper by converting surfaces into lists of oriented points, (3) Generate the structural grid-core using the same process, (4) Orient the robot to align in the direction of the substructure geometric planes, (5) Print the grid core using MBAM toolpaths, (6) Repeat step 1 and 2 for printing the outer surface with appropriate adjustments to the extruder orientation. During the design and printing process, we encountered several challenges including selecting geometry suitable for testing, extruder orientation, calibration of the hot end and extrusion/movement speeds, and deviation between the computer model and the physical object on the build platen. Physical models varied from their digital counterparts by several millimeters due to material deformation in the extrusion and cooling process. Real-time deviation verification studies will likely improve the workflow in future studies.
series	cdrf
email
last changed	2024/05/29 14:04

_id	ascaad2016_029
id	ascaad2016_029
authors	Hassan, Ramzi; Frode Saetre and Knut Andreas Oyvang
year	2016
title	Trends and Practices Using 3D Visualizations for Large-Scale Landscape Projects in Norway
source	Parametricism Vs. Materialism: Evolution of Digital Technologies for Development [8th ASCAAD Conference Proceedings ISBN 978-0-9955691-0-2] London (United Kingdom) 7-8 November 2016, pp. 269-274
summary	New advances in 3D modelling and visualization tools for large-scale landscape and construction projects have been achieved recently. The introduction of the new 3D digital modelling and visualization tools, e.g. CAD, VR, GIS and BIM initiated a huge shift in the way planners and designers develop, communicate and present project scenarios. This paper outlines the challenges, new trends and workflows connected to the use of new tools and how it’s been practiced and experienced by professionals and stakeholders as observed in Norway. The observation shows that the latest developments are providing new potentials for performing better communication and collaboration. Planners could now demonstrate many aspects of a project which exceed the usual minimum requirements. An important functionality is the capability to work with huge amount of data-sets for large-scale projects which were previously almost impossible to work with.
series	ASCAAD
email
last changed	2017/05/25 13:31

_id	ascaad2016_005
id	ascaad2016_005
authors	Khabazi, Zubin; Michael Budig
year	2016
title	Materiality in Its Minimum - Minimum Material Consumption through Design with Mathematics
source	Parametricism Vs. Materialism: Evolution of Digital Technologies for Development [8th ASCAAD Conference Proceedings ISBN 978-0-9955691-0-2] London (United Kingdom) 7-8 November 2016, pp. 29-38
summary	Contemporary practice of architecture has extensively utilized computation in its processes, which has brought lots of potentials like explicit integration of mathematics with design. This helped designers in different ways, ranging from modeling complex forms to simulating material behavior. Through presenting two experimental projects, this paper discusses how mathematical form-finding and math-driven form generation techniques could help to achieve not only complex designs, but also products which are optimized in their material use. This is a study to use mathematical functions in favor of mass reduction, as a sustainable design approach.
series	ASCAAD
email
last changed	2017/05/25 13:13

_id	acadia16_382
id	acadia16_382
authors	Lopez, Deborah; Charbel, Hadin; Obuchi, Yusuke; Sato, Jun; Igarashi, Takeo; Takami, Yosuke; Kiuchi, Toshikatsu
year	2016
title	Human Touch in Digital Fabrication
doi	https://doi.org/10.52842/conf.acadia.2016.382
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. 382-393
summary	Human capabilities in architecture-scaled fabrication have the potential of being a driving force in both design and construction processes. However, while intuitive and flexible, humans are still often seen as being relatively slow, weak, and lacking the exacting precision necessary for structurally stable large-scale outputs—thus, hands-on involvement in on-site fabrication is typically kept at a minimum. Moreover, with increasingly advanced computational tools and robots in architectural contexts, the perfection and speed of production cannot be rivaled. Yet, these methods are generally non-engaging and do not necessarily require a skilled labor workforce, bringing to question the role of the craftsman in the digital age. This paper was developed with the focus of leveraging human adaptability and tendencies in the design and fabrication process, while using computational tools as a means of support. The presented setup consists of (i) a networked scanning and application of human movements and human on-site positioning, (ii) a lightweight and fast-drying extruded composite material, (iii) a handheld “smart” tool, and (iv) a structurally optimized generative form via an iterative feedback system. By redistributing the roles and interactions of humans and machines, the hybridized method makes use of the inherently intuitive yet imprecise qualities of humans, while maximizing the precision and optimization capabilities afforded by computational tools—thus incorporating what is traditionally seen as “human error” into a dynamically engaging and evolving design and fabrication process. The interdisciplinary approach was realized through the collaboration of structural engineering, architecture, and computer science laboratories.
keywords	human computer interaction and design, craft in design, tool streams and tool building, cognate streams, sensate systems
series	ACADIA
type	paper
email
last changed	2022/06/07 07:59

_id	caadria2016_539
id	caadria2016_539
authors	Lublasser, E.; J. Braumann, D. Goldbach and S. Brell-Cokcan
year	2016
title	Robotic Forming: Rapidly Generating 3D Forms and Structures through Incremental Forming
doi	https://doi.org/10.52842/conf.caadria.2016.539
source	Living Systems and Micro-Utopias: Towards Continuous Designing, Proceedings of the 21st International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2016) / Melbourne 30 March–2 April 2016, pp. 539-548
summary	The past years have seen significant developments in the area of robotic design interfaces. Building upon visual programming environments, these interfaces now allow the creative industry to de- fine even complex fabrication processes in an easy, accessible way, while providing instant, production-immanent feedback. However, while these software tools greatly speed up the programming of robot- ic arms, many processes are still inherently slow: Subtractive process- es need to remove a large amount of material with comparably small tools, while additive processes are limited by the speed of the extruder and the properties of the extruded material. In this research we present a new method for incrementally shaping transparent polymer materi- als with a robotic arm, without requiring heat or dies for deep- drawing, thus allowing us to rapidly fabricate individual panels within a minimum of time.
keywords	Incremental forming; robotic fabrication; visual programming
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	sigradi2016_510
id	sigradi2016_510
authors	Tapia, Clara
year	2016
title	Análisis comparativo de prendas y estructuras textiles realizadas por impresión 3D [Comparative analysis of the structures of 3D printed clothes and textiles]
source	SIGraDi 2016 [Proceedings of the 20th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-7051-86-1] Argentina, Buenos Aires 9 - 11 November 2016, pp.331-336
summary	This work is an analysis about contemporary 3D printed textiles and clothes. The goal is to facilitate the work of those who want to design clothes by giving them an organized and categorized map of this new features. The categorization it is done by typologies focused into identify the minimum unit of the structures and the way that they grow to build the surfaces. As a conclusion this papers includes a discussion about what is digital fabrication good for, and the possibilities of personalized production.
keywords	3D Printing; Textiles Structures; Fashion; Parametric Design; Personalized Fabrication
series	SIGRADI
email
last changed	2021/03/28 19:59

_id	ecaade2016_185
id	ecaade2016_185
authors	Ilčík, Martin and Wimmer, Michael
year	2016
title	Collaborative Modeling with Symbolic Shape Grammars
doi	https://doi.org/10.52842/conf.ecaade.2016.2.417
source	Herneoja, Aulikki; Toni Österlund and Piia Markkanen (eds.), Complexity & Simplicity - Proceedings of the 34th eCAADe Conference - Volume 2, University of Oulu, Oulu, Finland, 22-26 August 2016, pp. 417-426
summary	Generative design based on symbolic grammars is oriented on individual artists. Team work is not supported since single scripts produced by various artists have to be linked and maintained manually with a lot of effort. The main motivation for a collaborative modeling framework was to reduce the script management required for large projects. We achieved even more by extending the design paradigm to a cloud environment where everyone is part of a huge virtual team. The main contribution of the presented work is a web-based modeling system with a specialized variant of a symbolic shape grammar.
wos	WOS:000402064400041
keywords	collaboration; symbolic shape grammar; generative modeling
series	eCAADe
type	normal paper
email
more	admin
last changed	2022/06/07 07:49

_id	ecaade2016_006
id	ecaade2016_006
authors	Gomaa, Mohamed and Jabi, Wassim
year	2016
title	Evaluating Daylighting Analysis of Complex Parametric Facades
doi	https://doi.org/10.52842/conf.ecaade.2016.2.147
source	Herneoja, Aulikki; Toni Österlund and Piia Markkanen (eds.), Complexity & Simplicity - Proceedings of the 34th eCAADe Conference - Volume 2, University of Oulu, Oulu, Finland, 22-26 August 2016, pp. 147-156
summary	Lighting analysis tools have proven their ability in helping designers provide functional lighting, increase comfort levels and reduce energy consumption in buildings. Consequently, the number of lighting analysis software is increasing and all are competing to provide credible and rigorous analysis. The rapid adoption of parametric design in architecture, however, has resulted in complex forms that make the evaluation of the accuracy of digital analysis more challenging. This study aims to evaluate and compare the performance of daylighting analysis in two industry standard software (Autodesk Revit and 3ds Max) when analysing the daylighting of complex parametric façade patterns. The study has shown that, generally, both Revit and 3ds Max underestimate illuminance values when compared to physical scaled models. 3ds Max was found to outperform Revit when simulating complex parametric patterns, while Revit was found to outperform 3ds Max when simulating simple fenestration geometries. As a general conclusion, the rapid progress of parametric modelling, integrated with fabrication technologies, has made daylighting analysis of complex geometries more challenging. There is a need for more sophisticated algorithms that can handle the increased level of complexity as well as further verification studies to evaluate the accuracy claims made by software vendors.
wos	WOS:000402064400014
keywords	Daylighting analysis evaluation; Parametric patterns; Revit; 3ds Max; Complex façades
series	eCAADe
email
last changed	2022/06/07 07:51

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