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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Form Finding & Optimization

Isogeometric Eigenshells: shape and topology finding design approach

< Table of Contents for Form Finding & Optimization
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Form Finding & Optimization
  • Pages: 10
  • Title: Isogeometric Eigenshells: shape and topology finding design approach
  • Author(s): Jelena Milosevic, Sasa Kovacevic, Miodrag Nestorovici
  • Keywords: form finding, topology finding, shell structures, eigenshells, isogeometric analysis, modal analysis, structural patterns, design
Abstract
This paper describes an approach that addresses shape finding and pattern generation in design of shell structures. Eigenshells represent structures which have modal form tessellated by structural pattern. The subject design approach is based on the deformation modeling and isogeometric concept, and realized through two sequence processes. In the first sequence shape optimization is conducted by application of standard optimization algorithm. Starting from the defined search space, optimal shape - modal form, is emerge in the process of deformation of the initial NURBS geometry. In the second sequence obtained shape is tessellated in the network which geometry represents principal stress directions. Different from proposed similar methods, in this approach NURBS based Isogeometric analysis is used for description of structural behavior. Isogeometric concept facilitates conservation of the geometric representation, enabling integration of design and analysis. Effectiveness and creative potentials of this approach were confirmed by the example.

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