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

Online IASS Proceedings

IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints


IASS Symposium 2014

SESSION: Structural Morphology 3: Morphology and Transformables

Non-linear analysis of deployable structures comprised of optimized universal scissor components

< Table of Contents for Structural Morphology 3: Morphology and Transformables
  • Proceedings Name: IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints
  • ISSN: (Electronic Version) 2518-6582
  • Session: Structural Morphology 3: Morphology and Transformables
  • Title: Non-linear analysis of deployable structures comprised of optimized universal scissor components
  • Author(s): Lara ALEGRIA MIRA, Ashley P. THRALL, Niels DE TEMMERMAN
  • Keywords: Deployable scissor structures, component re-use, structural design, nonlinear analysis
Abstract
Deployable scissor structures can transform from a compact bundle of components into an expanded load bearing structural system and are used in mobile, temporary applications. This transformational capacity requires a complex design process, where geometry, kinematics and structural performance are directly related. Currently, scissor structures are designed for a specific application, thereby requiring that this complex design process be carried out for each implementation. To overcome this design barrier, the authors have proposed a reconfigurable component that generates a myriad of scissor geometries and allows for component re-use: the Universal Scissor Component (USC). In prior research, the authors have optimized the shape and topology of the USC for minimum self-weight subject to structural performance requirements in eleven different geometric configurations: seven barrel vaults and four domes. However, this optimization procedure conservatively investigated a single USC using a linear elastic finite element model within a parametric software package. A nonlinear analysis of the entire three-dimensional structure under design loads is necessary to fully understand structural behavior and investigate the efficiency of the optimized USC. This paper presents the nonlinear analyses and evaluation of two geometries comprised of the optimized USC: a barrel vault of 9.8 m span and a buckyball (truncated icosahedron) dome of 5.5 m span. In addition, the dependence of the structural performance on the joint stiffness is investigated. The presented research is a step towards the ultimate validation of the USC as a general component for multifunctional and reconfigurable deployable scissor structures.

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.