Log In    |    Join IASS    |    Online Journal    |    Proceedings    |    Directory    |    Events    |    News

Online IASS Proceedings

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


IASS Symposium 2016

SESSION: Form Finding & Optimization

Shape Optimization by Presence of Antiplane Shear Deformation in Free-Form Shell Structure

< 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: 9
  • Title: Shape Optimization by Presence of Antiplane Shear Deformation in Free-Form Shell Structure
  • Author(s): Tetsuro Nishida, Toshio Honma, Yohei Yokosuka
  • Keywords: shape optimization, free-form shell structure, antiplane shear deformation, shell element
Abstract
Free-form shell structures that can be constructed with long span are designed in a lot of projects recently. These structural systems need to satisfy both designability and mechanical rationality. However, it is difficult to decide a curved shape by designer's experience and intuition. In this study, shape optimization for free-form shell structures using Bezier curved surface is described. Moreover, the curved surface coordinates and the shell thickness are adopted by implementing the parametric surface as design variables. In shape optimization, the shell thickness around the support tends to become thick by stress concentration occurring. Therefore, the antiplane shear deformation cannot be ignored in thick shell element. In this paper, we investigate the difference of the form obtained by the shape optimization by using shell element with/without the effect of the antiplane shear deformation for free-form shell structures and indicate the knowledge of the shell element with the antiplane shear deformation.

Read the complete paper (pdf) (requires membership)
© IASS All rights reserved.
IASS · CEDEX - Laboratorio Central de Estructuras y Materiales · C/ Alfonso XII, 3 · 28014 Madrid, Spain     tel. 34 91 335-7409; fax: 335-7422
Site Design & Programming
by World Design Group, Inc.