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: Bending Active and Flexible Structures

Optimization of locations of slot connections of gridshells modeled using elastica

< Table of Contents for Bending Active and Flexible Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Bending Active and Flexible Structures
  • Pages: 6
  • Title: Optimization of locations of slot connections of gridshells modeled using elastica
  • Author(s): Makoto Ohsaki, Kazuya Seki, Yuji Miyazu
  • Keywords: gridshell, elastica, optimization, simulated annealing, slot joint
Abstract
An optimization method is presented for gridshells, which are generated by bending beams through forced displacements at supports. The target shape of a curved beam is defined as an elastica, which is the shape of a buckled beam-column with large deflection. The length of beam of the initial configuration on the ground is computed from the target shape. It is shown that the interaction forces at hinges between perpendicularly connected beams are reduced by designing the curve as elastica. The interaction forces are further reduced by assigning hinge+slot joints that can move along a member. A heuristic approach called simulated annealing is used for optimizing the locations of hinge+slot joints. It is shown in the numerical examples that maximum forces at joints are effectively reduced by appropriately placing a small number of hinge+slots.

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.