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Vol. 46 (2005) No. 3 December n. 149


Expandable "BLOB” Structures

< Table of Contents for Vol. 46 (2005) No. 3 December n. 149
  • 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. 46 (2005) No. 3 December n. 149
  • Pages: 151-158
  • Title: Expandable "BLOB” Structures
  • Author(s): F. Jensen and S. Pellegrino
  • Keywords: Deployable structure, mechanism, pantograph.
Abstract
This paper presents a methodology for designing single-degree-of-freedom expandable “free-form” structures composed of rigid blocks connected through simple cylindrical joints. The underlying idea is to interconnect two or more individually expandable plate structures. Using a two-dimensionally expanding sphere as a first example, the conditions that must be satisfied to preserve the internal mobility when connecting identical expandable plate structures are explained. These conditions are then extended to plate structures that are not identical and it is shown that a wide range of expandable free-form or “blob” structures can be designed through this approach.

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