WS 3 – AAG 2023 Stuttgart, 04 – 07 October 2023 https://www.aag2023.com Advances in Architectural Geometry Tue, 27 Jun 2023 10:05:05 +0000 de hourly 1 https://wordpress.org/?v=6.7.2 Libra: A topology grammar for generating structural topologies https://www.aag2023.com/workshop/workshop-3/ Tue, 18 Apr 2023 14:38:04 +0000 https://www.aag2023.com/?post_type=workshop&p=3560 Libra: A topology grammar for generating structural topologies

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WS 3

Type

30% lecturing
50% hands-on exercises on personal laptops
20% discussion

Workshop objectives

Ioannis Mirtsopoulos will introduce Libra, a Grasshopper plugin for Rhino3D, to architects (researchers and practitioners) interested in structural design and design space exploration. The tool allows the incremental generation of numerous diverse reticulated conceptual structures in a semi-automated way within predefined design domains and for predefined loads without any knowledge of structural mechanics. Particularly, it provides an easy and intuitive workflow for structural design, beneficial to understand how the flow of forces affects the design of structures. Overall, it is a design approach that provokes creativity and aims to unveil unprecedented structural forms.

Participants requirements

Required skills: No prior experience in (shape) grammars is required, but some basic knowledge of Grasshopper will be necessary
Required software: Rhinoceros 7
Libra plugin to be freely downloaded from food4rhino
https://www.food4rhino.com/en/app/libra
https://github.com/StructuralXplorationLab/Libra
Required hardware: Personal computers (laptops Windows/ Mac)

Workshop description

The workshop focuses on a grammar for structural design, which has been developed during the doctoral studies of the instructor. A computational framework that integrates the developed theory into a fully functioning Grasshopper plug-in has been implemented, named Libra. The tool allows the incremental generation of numerous diverse reticulated conceptual structures in a semi-automated way within predefined design domains and for predefined loads, without any knowledge of structural mechanics. Particularly, it provides an easy and intuitive workflow for structural design, beneficial to understand how the flow of forces affects the design of structures. The integration of static equilibrium conditions ensures designers that the generated design candidates are always in static equilibrium and no further post-processing to impose equilibrium is required. This design workflow aims at provoking creativity. Overall, it is a generative, algorithmic & evolutionary design approach that integrates interactive genetic algorithms and aims to unveil unprecedented structural forms.

During the workshop emphasis will be put on newly implemented features. Precisely, how generative transformations are constrained within numerical bounds that are translated into geometric domains. Such transformation constraints aim at controlling the generative process while considering constructability and/or aesthetics. At the beginning of the workshop the theory of the generative grammars that support the workflow will be provided. After, the participants will be guided for the generation of 2D and 3D structurally valid design candidates. The workshop targets architects with interest in conceptual structural design and grammar rules. No prior experience in (shape) grammars is required, but some basic knowledge of Grasshopper will be necessary.

Past AAG publications tackle with creativity, structural design and generative/evolutionary design and therefore the instructor is convinced that the AAG community perfectly matches the target group of the developed plug-in. Particularly, topology, graphs and geometric manipulations, which constitute the core elements of the proposed workshop, are remarkable aspects of architectural geometry and thus enhance the relevance of the topic to AAG.

Target group

architects with interest in conceptual structural design and grammar rules

Number of participatns max.

12

Duration and Procedure


Day 1 (04.10.)

  • introduction to the developed grammar for generative structural design
  • Guidance through 2D and 3D examples
  • Backtracking and other design space exploration functionalities

Day 2 (05.10.)

  • Integration of genetic algorithms for advanced exploration
  • Design of structural topologies for given design briefs.
  • Discussion / Debriefing



Workshop Media

Workshop chair/Lecturer(s)

]]> Ioannis Mirtsopoulos https://www.aag2023.com/personen/ioannis-mirtsopoulos/ Tue, 18 Apr 2023 13:42:44 +0000 https://www.aag2023.com/?post_type=personen&p=3519 Ioannis Mirtsopoulos

École polytechnique fédérale de Lausanne (EPFL)

Ioannis Mirtsopoulos is a researcher with multidisciplinary background. He holds a PhD in Civil Engineering from EPFL, Switzerland, a MAS in Digital Fabrication from ETH, Switzerland, a MSc in Building Technology from TUDelft, the Netherlands, and a Diploma in Architectural Engineering from AUTh, Greece. Prior to his doctoral studies, Ioannis worked as research assistant at Block Research Group (BRG) in ETH, Switzerland.

During his PhD he developed a grammar tailored to the design space exploration of conceptual structural design, implemented into a Grasshopper plugin, named Libra. Since the public release of Libra, Ioannis has presented and distributed the tool to eCAADe and simAUD communities where he held similar workshops, as well as university students in the framework of their studies. He has also taught mathematics (geometry, calculus, linear algebra) and conceptual structural design courses to bachelor and master students.

https://www.food4rhino.com/en/app/libra
https://github.com/StructuralXplorationLab/Libra


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