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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Reformat results as: short short into frame detailed detailed into frame

_id	ecaade2014_168
id	ecaade2014_168
authors	Patrick Janssen and Rudi Stouffs
year	2014
title	Multi-Perspective Urban Optioneering
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 1, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 79-88
doi	https://doi.org/10.52842/conf.ecaade.2014.1.079
wos	WOS:000361384700007
summary	This paper investigates the state-of-the-art with respect to simulation-based planning support systems in order to draw a set of requirements and best practices for an urban planning and design framework that enables multiple stakeholders with differing perspectives to systematically explore design options, leveraging the latest analysis and simulation techniques. From these requirements and best practices, the foundations and structure of such an urban planning and design framework are developed. A number of technological and methodological challenges are identified for future investigation.
keywords	Urban planning and design; optioneering; simulation-based planning support systems
series	eCAADe
email
last changed	2022/06/07 07:59

_id	ecaade2014_092
id	ecaade2014_092
authors	Sherif Abdelmohsen
year	2014
title	A BIM-based Framework for Assessing Architectural Competition Entries
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 2, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 473-483
doi	https://doi.org/10.52842/conf.ecaade.2014.2.473
wos	WOS:000361385100050
summary	Architectural competitions have been traditionally used to select best design practices. The basis of assessment for competitions has typically involved non-technical concepts of quality, subjective and emotional appreciations of experiences, and inseparable accord of formal, functional, aesthetic and contextual values (Rönn, 2011), rather than clear-cut objective and precisely measured values as in the engineering domain (Nashed, 2005; Nelson, 2006). Criteria for judgment usually focus on design parti and clarity of concept, novelty of architectural approach, context compliance, spatial organization, functional adaptability, economical solutions, and design flexibility. The assessment process, although presumably comprehensive and involving multiple evaluation techniques and resources, may still overlook important technical issues that may be fundamentally significant to the exclusion or approval of a given entry. This paper introduces a framework for assessing architectural competition entries aided by concepts of building information modeling (BIM).
keywords	Building information modeling; architectural competitions; design evaluation; best practices; rule checking
series	eCAADe
email
last changed	2022/06/07 07:56

_id	acadia14_565
id	acadia14_565
authors	Klemmt, Chirstoph
year	2014
title	Compression Based Growth Modelling
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. 565-572
doi	https://doi.org/10.52842/conf.acadia.2014.565
summary	The research evaluates the structural performance of dendritic as well as reticulate venation systems via a Finite Element Analysis.
keywords	architecture, venation, structure, vein, Finite Element Analysis, simulation, Biomimicry and Biological Models in Design
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 07:52

_id	caadria2016_787
id	caadria2016_787
authors	Knapp, Chris; Jonathan Nelson, Andrew Kudless and Sascha Bohnenberger
year	2016
title	Lightweight material prototypes using dense bundled systems to emulate an ambient environment
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. 787-796
doi	https://doi.org/10.52842/conf.caadria.2016.787
summary	This paper describes and reflects upon a computational de- sign and digital fabrication research project that was developed and implemented over 2014-2015, with subsequent development continu- ing for applications at present. The aim of the research was to develop methods of modelling, analysis, and fabrication that facilitate integra- tive approaches to architectural design and construction. In this con- text, the development of material prototypes, digital simulations, and parametric frameworks were pursued in parallel in order to inform and reform successive iterations throughout the process, leading to a re- fined workflow for engineering, production, and speculation upon fu- ture directions of the work.
keywords	Digital fabrication; biomimicry; ambient environments; grasshopper; computational design
series	CAADRIA
email
last changed	2022/06/07 07:51

_id	acadia14_219
id	acadia14_219
authors	Moritz Dörstelmann, Moritz; Prado, Marshall; Parascho, Stefana; Knippers, Jan; Menges, Achim
year	2014
title	Integrative computational design methodologies for modular architectural fiber composite morphologies
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. 219-228
doi	https://doi.org/10.52842/conf.acadia.2014.219
summary	This paper describes how computational design methodologies can serve as an integrative tool within a multidisciplinary design project. The topic is discussed based on the design and fabrication process for modular architectural fiber composite morphologies applied and developed in the ICD/ITKE Research Pavilion 2013-14.
keywords	integrative computational design, digital fabrication and construction, robotic fabrication reinforced fiber composite structures, biomimicry and biological models in design, light-weight construction, multidisciplinary design
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 07:58

_id	acadia14_101
id	acadia14_101
authors	Richards, Daniel;Amos, Martyn
year	2014
title	Designing with Gradients: Bio-Inspired Computation for Digital Fabrication
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. 101-110
doi	https://doi.org/10.52842/conf.acadia.2014.101
summary	This paper presents a novel generative model that can create functional and expressive geometries by evolving volumetric gradient patterns. We demonstrate that our model is useful for performance-driven form finding tasks such as structural optimisation, and holds vast potential for designing exotic multi-material and functionally graded materials in future applications.
keywords	Artificial Intelligence in Design, Material Agency, Biomimicry and Biological Models in Design, Generative, Parametric, and Evolutionary Design, Digital fabrication and construction, New digital design concepts and strategies
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 07:56

_id	ecaade2014_023
id	ecaade2014_023
authors	Salma El Ahmar and Antonio Fioravanti
year	2014
title	Botanics and Parametric Design Fusions for Performative Building Skins - An application in hot climates
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 2, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 595-604
doi	https://doi.org/10.52842/conf.ecaade.2014.2.595
wos	WOS:000361385100062
summary	Biomimicry and computational design are two growing fields of research and practice in architecture for their potential in performative and sustainable design, among many other benefits. Cooling loads are posing serious energy problems in hot climatic cities as in Cairo and Alexandria. Attempting to solve these problems, this research turned to botanical inspirations for ideas in order to improve thermoregulation of the building skin. One of these ideas was chosen and implemented using computational software in the design of a parametric vertical shading screen for a typical office room in Cairo. The challenge was to minimize cooling loads as much as possible without compromising daylight requirements. An evolutionary solver was used to optimize results and environmental simulations were performed before and after the proposed screen to assess its performance and evaluate this biomimetic-computational approach to design.
keywords	Biomimicry; building skin; thermoregulation; parametric design; hot climates
series	eCAADe
email
last changed	2022/06/07 08:00

_id	ecaade2015_230
id	ecaade2015_230
authors	Yazici, Sevil
year	2015
title	A Course on Biomimetic Design Strategies
source	Martens, B, Wurzer, G, Grasl T, Lorenz, WE and Schaffranek, R (eds.), Real Time - Proceedings of the 33rd eCAADe Conference - Volume 2, Vienna University of Technology, Vienna, Austria, 16-18 September 2015, pp. 111-118
doi	https://doi.org/10.52842/conf.ecaade.2015.2.111
wos	WOS:000372316000014
summary	Although redesigning curricula by integrating the CAD tools into architectural education has been an ongoing interest, a new understanding towards solving design problems holistically should be investigated in architectural education. Because natural systems offer design strategies to increase performance and effectiveness with an extensive formal repertoire; incorporating multi-faceted biomimetic principles into the design process is necessary. It is critical to increase skills of students towards algorithmic thinking, as well as to deal with performance issues and sustainability. This paper aims to discuss an undergraduate elective course titled “Sustainable Design and Environment through Biomimicry” which was taught by the author in architectural degree program of Ozyegin University Faculty of Architecture and Design in Fall 2014-2015. Following the exploration of individual research topics, findings were implemented into design problems. The challenges encountered in the teaching process and future lines of the work are discussed in the paper.
series	eCAADe
email
more	https://mh-engage.ltcc.tuwien.ac.at/engage/ui/watch.html?id=c96be63a-6f80-11e5-8f6b-e7a3874d691b
last changed	2022/06/07 07:57

_id	sigradi2014_317
id	sigradi2014_317
authors	Folga, Alejando
year	2014
title	Pseudoperspectivas / Realización de un Fotomontaje Diédrico [Pseudoperspectives / Making a Dihedral Photomontage]
source	SiGraDi 2014 [Proceedings of the 18th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-9974-99-655-7] Uruguay - Montevideo 12 - 14 November 2014, pp. 285-289
summary	As the term suggests, a pseudoperspective involves performing a false perspective, and is the result of combining two different projective systems: Diedric Orthogonal System with the Central perspective System. Despite its heterodox character, this nifty graphic resource is used since the invention of perspective. With the digital graphics development of pseudo-perspectives currently allows new expressive possibilities. In this paper an academic exercise conducted with students from a curriculum during the first year of a career in architecture is presented. This work consisted of performing a photomontage from an elevation or vertical section.
series	SIGRADI
email
last changed	2016/03/10 09:52

_id	ecaade2015_229
id	ecaade2015_229
authors	Pak, Burak and Meeus, Bruno
year	2015
title	Project Arrivée: Counter-mapping Super-diversity in Brussels and Ghent with Architecture Students
source	Martens, B, Wurzer, G, Grasl T, Lorenz, WE and Schaffranek, R (eds.), Real Time - Proceedings of the 33rd eCAADe Conference - Volume 1, Vienna University of Technology, Vienna, Austria, 16-18 September 2015, pp. 369-378
doi	https://doi.org/10.52842/conf.ecaade.2015.1.369
wos	WOS:000372317300040
summary	This paper introduces a counter-mapping attempt augmented by a Geoweb 2.0 platform in the context of two Belgian inner-city neighborhoods. The two aims of this project were to build a platform for the collective construction of a better understanding this dynamic super-diverse arrival environment and bring the various qualities and aspects of these super-diverse urban neighborhoods to foreground. In this study we report on the first results of this project which took place in Ghent and Brussels in 2014. Around 300 architecture students registered, interpreted and geocoded visible signs along preconceived tracks by means of a Geoweb 2.0 platform. Through field observations and interviews, the students created dynamic and interactive maps. We found that the large-scale mapping through Geoweb 2.0 makes it possible to discern different layers of use in arrival neighborhoods. These layers referred to different population groups which continuously have to negotiate each other's presence. Furthermore, the platform created the possibility to effectively and efficiently combine student fieldwork with online and offline lectures and offered students the opportunity to comment on, peer-review and learn from each other's insights. The findings will serve as an alternative information resource in the forthcoming Master's thesis graduation design studio which will be led by the first author.
series	eCAADe
email
last changed	2022/06/07 08:00

_id	ascaad2014_033
id	ascaad2014_033
authors	Al-Mousa , Sukainah Adnan
year	2014
title	Temporary Architecture: An urban mirage
source	Digital Crafting [7th International Conference Proceedings of the Arab Society for Computer Aided Architectural Design (ASCAAD 2014 / ISBN 978-603-90142-5-6], Jeddah (Kingdom of Saudi Arabia), 31 March - 3 April 2014, pp. 405-413
summary	One of the emerging multidisciplinary contemporary art practices is interactive installation art, which is concerned with constructing a temporary artistic environment that is digital, responsive and engaging. It is usually displayed within existing architectural context whether indoor in a gallery space or outdoor in a public space. Recent examples of such art projects show that interactivity and illusion are effectively present and highly influential in the perception and memory of the place. A digital display on a building façade can remain attached to the history of the site in the spectator’s memory even after the display is removed. An interactive space that involves body response and emotional sensory interaction can determine the narrative perceived from the experience. These trends seemingly bring together the physical context and the digital space to contain the spectator. The two mediums are merged to provide a new genre of space, hence a new mode of perception where the art space mediates people’s movement and overlay the context with new meanings. Multiple backgrounds are involved in the creative process of interactive installation art, all of which involve examining various concepts through artistic engagement with temporary spaces. Here, particularly because of interactivity and immerseveness, the spectator becomes part of the performance (the subject); with his moving and reacting he activates the narrative and probably gives it its shape. This paper aims to explore the potentials of the digital spatial display to enhance or weaken our sense of belonging to the surrounding environments while creating an illusionary space within the real physical one. It also aims to discuss how this influence would affect the memory of the mixed experience; the installation being digital, temporary and illusive and the space being physical, permanent and real. What happens to the “spectator” when contained by the digital-interactive and the physical medium(s)?. In order to unfold the mentioned questions, the study uses theories of perception and performance reflected on live case studies of recent art projects where the researcher becomes a member of the audience and an observer at the same time in order to trace the journey inside this new medium. In an era where time is being more difficult to grasp and identities of visual culture is becoming more difficult to define, temporary responsive environments can provide some openings where space becomes durational, yet, influential, and where people’s movements become more meaningful in the visual terrain.
series	ASCAAD
email
last changed	2016/02/15 13:09

_id	ecaade2014_010
id	ecaade2014_010
authors	Anna Laskari
year	2014
title	Multidimensional Comparative Analysis for the Classification of Residual Urban Voids
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 2, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 283-292
doi	https://doi.org/10.52842/conf.ecaade.2014.2.283
wos	WOS:000361385100030
summary	Spatial configurations can be perceived through a variety of descriptions of their physical form and structure. Each description can offer an autonomous interpretation or be combined with others parathetically, in a logic of multiple distinct layers. However it is asserted that meaningful information can be extracted from a simultaneous view of sets of descriptions within a high-dimensional structure. This paper investigates the possibility of conducting a comparative analysis and classification of non-typical spatial formations based on the synchronous view of multiple quantifiable spatial attributes. Under the hypothesis of a reciprocal definition of spatial structure and occupation practices, it is intended to identify distinct generic spatial types in order to subsequently determine a range of suitable respective generic use types. This investigation supports the formulation of strategies for the reactivation of unused, residual urban voids, currently being addressed by the research programme titled "Strategies to network urban interventions in the Metropolitan Centre of Athens". The programme is carried out by the School of Architecture of the National Technical University of Athens in collaboration with the Region of Attica, under the scientific coordination of Professor Dr. Parmenidis (2013).
keywords	Multidimensional descriptions; generic spatial types; quantifiable attributes; dimensionality reduction; classification
series	eCAADe
email
last changed	2022/06/07 07:54

_id	sigradi2014_077
id	sigradi2014_077
authors	Arango, Natalia Echeverri; Diana Patricia Cuellar
year	2014
title	Configuraciones cambiantes en un mundo codificado [Changing configurations on a codified world]
source	SIGraDi 2014 [Proceedings of the 18th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-9974-99-655-7] Uruguay - Montevideo 12 - 14 November 2014, pp. 205-208
summary	The proposed work is a reflection on what brings and carries the displacement, the exile, from the Flusser perspective of the migrant. Being able to translate and link difficult situations in new contexts is going to help with feeding from these experiences to transform them into challenges for the survival itself and to provide other openings and other opportunities as creative practices.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	sigradi2014_057
id	sigradi2014_057
authors	Barros, Diana Rodriguez; María Mandagarán
year	2014
title	Pensamiento de diseño y construcción de narrativas visuales. Caso de prácticas didácticas disruptivas en entornos postdigitales [Design thinking and construction of visual narratives. Case teaching practices in disruptive postdigitals environments]
source	SIGraDi 2014 [Proceedings of the 18th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-9974-99-655-7] Uruguay - Montevideo 12 - 14 November 2014, pp. 195-199
summary	Design Thinking recognizes processes linked to empathy, creation, prototyping and storytelling, that condition design methodologies to solve complex problems with user participation. From this perspective, next to disruptive practices, we present learning experiences focus in management, design and production of graphic databases in Web 2.0 and 3.0 contexts. They are linked to photomontages and graphic communication pieces of urban-architectural works and narratives that give meaning and entity to those interventions. We recorded results that value spatial thinking with images. Also the presence of traditional skills with hybrid skills in students, that encourage fluency, creativity and innovation, self-learning, experimentation, teamwork and network integration.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	ecaade2020_542
id	ecaade2020_542
authors	Brown, Andre, Liu, Yisi, Webb, Nicholas and Knight, Mike
year	2020
title	Interpreting and exploiting narrative as a sketch design generator for application in VE
source	Werner, L and Koering, D (eds.), Anthropologic: Architecture and Fabrication in the cognitive age - Proceedings of the 38th eCAADe Conference - Volume 1, TU Berlin, Berlin, Germany, 16-18 September 2020, pp. 449-458
doi	https://doi.org/10.52842/conf.ecaade.2020.1.449
summary	The research in this paper focusses on how a narrative text can be the generator of an architectural drawing, or other architectural representation, such as an Architectural Virtual Environment. The drawn physical sketch has traditionally played that role. A particular approach to narrative has been important for some notable architects and their architecture. Ian Ritchie (2014), for instance, celebrates the use of poetry to describe the essential spirit of a scheme before any drawing is done. The work in the paper here describes the proposition to capture such narrative text in a systematic and structured way. We describe foundational work on how the captured narrative text has been translated into a contemporary, computer-mediated, design development environment. Different narrative accounts recalling a now demolished house form the focus case study. This case study is the vehicle through which the initial principles establishing how best to move from narrative to virtual representation are established and tested.
keywords	virtual environment; narrative; sketch; virtual reality
series	eCAADe
email
last changed	2022/06/07 07:54

_id	sigradi2014_213
id	sigradi2014_213
authors	Daas, Mahesh
year	2014
title	Toward a taxonomy of architectural robotics
source	SiGraDi 2014 [Proceedings of the 18th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-9974-99-655-7] Uruguay- Montevideo 12,13,14 November 2014, pp. 623-626
summary	Robotics in architecture is a fast-emerging area of research and design today. The current research and practices of robotics in architecture tend to be, to a great degree, techno-positivist and framed by a narrowly defined instrumentalist view. The paper presents comprehensive taxonomy of a broad range of robotic applications so as to meaningfully guide, systematize, and clarify multi-faceted design or research explorations in architecture and beyond. The paper advances four frameworks: role of robotics in architecture; modes of interaction between robots, humans and architecture; the Vitruvian framework; and robots classified by form; all of which point to new avenues of potential exploration while also revealing the gaps and biases in the current research and design in the discipline.
keywords	Robots; Architectural Robotics; Taxonomies; Robotic Fabrication
series	SIGRADI
email
last changed	2016/03/10 09:50

_id	ijac201412305
id	ijac201412305
authors	Davis, Daniel
year	2014
title	Quantitatively Analysing Parametric Models
source	International Journal of Architectural Computing vol. 12 - no. 3, 307-320
summary	Architectural practices regularly work with parametric models, yet almost nothing is known about the general properties of these models. We do not know how large a typical model is, or how complicated, or even what the typical parametric model does. These knowledge gaps are the focus of this article, which documents the first large-scale quantitative parametric model survey. In this paper three key quantitative metrics - dimensionality, size, and cyclomatic complexity - are applied to a collection of 2002 parametric models created by 575 designers. The results show that parametric models generally exhibit a number of strong correlations, which reveal a practice of parametric modelling that has as much to do with the management of data as it does with the modelling of geometry. These findings demonstrate the utility of software engineering metrics in the description and analysis of parametric models.
series	journal
last changed	2019/05/24 09:55

_id	sigradi2014_079
id	sigradi2014_079
authors	Delatorre, Vivian; Alice Theresinha Cybis Pereira
year	2014
title	BIM no currículo de Arquitetura: Visões e reflexões para uma implementação
source	SiGraDi 2014 [Proceedings of the 18th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-9974-99-655-7] Uruguay - Montevideo 12 - 14 November 2014, pp. 375-379
summary	The BIM is being gradually incorporated in education. Based on national and international reports, experiences have shown that it is not only the insertion of a technology applied to project development and construction, but it also covers significant changes involving people and processes that require collaborative, interdisciplinary and integrated practices. In this context, a study for the implementation of BIM, considering the particularities of the Architecture and Urbanism course at Unochapecó University was developed, once the curriculum is written based on these discussions. The teachers involved were interviewed for get different views on the subject and to seek contributions.
keywords	BIM (Building Information Modeling); Education; Architecture
series	SIGRADI
email
last changed	2016/03/10 09:50

_id	sigradi2015_1.320
id	sigradi2015_1.320
authors	Delatorre, Vivian; Pereira, Alice Theresinha Cybis; Miotto, Juliano
year	2015
title	BIM: Application reports in the teaching of architecture
source	SIGRADI 2015 [Proceedings of the 19th Conference of the Iberoamerican Society of Digital Graphics - vol. 1 - ISBN: 978-85-8039-135-0] Florianópolis, SC, Brasil 23-27 November 2015, pp. 30-37.
summary	This paper presents the first application reports of BIM in the Architecture and Urbanism course at UNOCHAPECÓ University, Brazil. This course, which began inserting BIM in its curriculum in 2014, shows considerations on the implementation of BIM in a discipline of architectural design. In addition, this paper aims to understand the students’ viewpoint regarding the insertion of BIM through a questionnaire. As a result, it presents the reflections of this experience in teaching BIM. This study expects to generate contributions to new practices in the teaching of architecture and urbanism and to advance the knowledge about BIM.
keywords	BIM, Teaching, Architecture
series	SIGRADI
email
last changed	2016/03/10 09:50

_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
source	Proceedings of the 2023 DigitalFUTURES The 5st International Conference on Computational Design and Robotic Fabrication (CDRF 2023)
doi	https://doi.org/https://doi.org/10.1007/978-981-99-8405-3_44
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

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