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Vol. 52 (2011) No. 4 December n. 170


Hangai Prize Papers for 2011: Shape-Finding of a Deployable Structure using Simulated Annealing

< Table of Contents for Vol. 52 (2011) No. 4 December n. 170
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 52 (2011) No. 4 December n. 170
  • Pages: 241-247
  • Title: Hangai Prize Papers for 2011: Shape-Finding of a Deployable Structure using Simulated Annealing
  • Author(s): A.P. Thrall
  • Keywords: Deployable structures, optimization, pantograph, scissor element, simulated annealing
Abstract
Finding efficient forms and section profiles for a deploying structure is a challenging design problem traditionally approached through trial and error. Alternatively, heuristic search algorithms can be used to pursue an optimized geometry and design the section profiles. This paper proposes a methodology for the design and optimization of a deploying structure for minimum self-weight using a Simulated Annealing algorithm. The design variables are 1) geometric variables that define the system throughout deployment and 2) the section profiles of each element. The constraints include 1) geometric requirements that ensure proper deployment and 2) section profile specifications defined by design code. This methodology will be demonstrated for a deploying pantograph, but could be employed for the design of other deployable structures, including retractable roofs, movable bridges, and expandable shelters.

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