id 
ecaade2012_124 
authors 
WierzbickiNeagu, Madalina ; Silva, Clarence Wilfred de 
year 
2012 
title 
Application of Fuzzy Logic for Optimizing Foldable Freeform Geometries: An example of a practical application – a foldable window shade 
source 
Achten, Henri; Pavlicek, Jiri; Hulin, Jaroslav; Matejovska, Dana (eds.), Digital Physicality  Proceedings of the 30th eCAADe Conference  Volume 1 / ISBN 9789491207020, Czech Technical University in Prague, Faculty of Architecture (Czech Republic) 1214 September 2012, pp. 709717. 
summary 
This paper concerns the current discourse on computeraided design tools for architectural design. There are drawbacks of purely analytic design tools which hinder a systemlevel, endeffect oriented ideation. For instance, most freeform quadrilateral meshes are fully constrained and therefore not capable of folding. They can only fold under special circumstances – when their geometry satisfi es the conditions of overconstrained kinematics. However, such intent of folding cannot be captured using simple modeling based on parameters and constraints. Furthermore, algorithmization of mesh kinematics using formulas is infl exible, it cannot handle topological variations, and it inhibits the interactive control of the model. In this paper, a fuzzy logic algorithm which uses a goaloriented, humanlike reasoning to control the parametric model is proposed. The algorithm applies easily observable behaviors of the geometry to adjust the selected patches until the entire shell can be folded. The algorithm relies on designerobservable characteristics of motion rather than on formulaic representations. Such approach directs the designers’ focus on the desired outcome while avoiding the drawbacks of analytic modeling of complex kinematics. 
wos 
WOS:000330322400075 
keywords 
Folding structures; fuzzy logic; intentdriven design; freeform quadrilateral mesh 
series 
eCAADe 
email 
madalina@interchange.ubc.ca 
full text 
file.pdf (2,208,301 bytes) 
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2014/04/14 11:07 
