Journal
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
Volume 40, Issue 1-6, Pages 257-269Publisher
SPRINGER
DOI: 10.1007/s00158-009-0358-4
Keywords
Structural optimization; Multiobjective; Grid shell; Free form structure; Homogenisation
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Funding
- UK Engineering and Physical Sciences Research Council
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Computational modeling software facilitates the creation of any surface geometry imaginable, but it is not always obvious how to create an efficient grid shell structure on a complex surface. This paper presents a design tool for synthesis of optimal grid structures, using a Multi-Objective Genetic Algorithm to vary rod directions over the surface in response to two or more load cases. A process of grid homogenization allows the tool to be rapidly applied to any grid structure consisting of a repeating unit cell, including quadrilateral, triangular and double layer grids. Two case studies are presented to illustrate the successful execution of the optimization procedure.
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