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


IASS Symposium 2016

SESSION: Hangai Prize Presentations

Form evaluation of free-form shells by using bending strain energy ratio

< Table of Contents for Hangai Prize Presentations
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Hangai Prize Presentations
  • Pages: 7
  • Title: Form evaluation of free-form shells by using bending strain energy ratio
  • Author(s): Hayato Utebi, Kenji Yamamoto
  • Keywords: bending strain energy, free form shell, shape evaluation, finite-element analysis, algorithmic design
Abstract
Recently, due to the development of structural materials and structural analysis technology, various large span structures with complex forms have been built. There might be a structure with a structurally irrational shape among them. For that reason, this study aims to make an index that can evaluate the mechanical performance of shell shape at an early design stage. In this paper, the rate of the bending strain energy in the strain energy caused by external forces, which is called the bending strain energy ratio, is proposed as the index. The bending strain energy ratios are calculated for various shells which have classic shapes such as sphere or cylinder, and complex free shapes. The relations between the index and the maximum responses and the charact

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