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: Structural Morphology

Mechano-adaptive space frame generation based on ellipsoid packing

< Table of Contents for Structural Morphology
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Structural Morphology
  • Pages: 9
  • Title: Mechano-adaptive space frame generation based on ellipsoid packing
  • Author(s): Alessandro Felder, Harri Lewis, Daniel Piker, André Pereira, Xavier De Kestelier
  • Keywords: space frames, volume-filling, computational design, biomimetics
Abstract
We present an algorithm to automate the generation of volume-filling space frames adapted to an input mechanical stress field. Our approach relies on local rules, inspired by the fact that vertebrate bones・local responses to the mechanical environment produce globally strong, yet lightweight, structures. Noticing the anisotropy of trabecular bone, we choose ellipsoids aligned to the principle stress directions as basic units of our approach. The ellipsoids・local interactions are based on simple engineering principles designed to encourage mechanically advantageous configurations, such as smaller ellipsoids in regions of high stress and more elongated ellipsoids in regions of more anisotropic stress. The final structure results from connecting ellipsoid centre points along stress directions. We show that for a representative case our structures can achieve an improved performance, quantified by deflection and buckling analysis, compared to traditional space frames, despite using significantly less material.

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.