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Feasibility of multi-layer freeform deployable structures

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Introduced centuries ago, deployable/foldable structures have been more thoroughly investigated during the recent decades. One of the famous types of these structures is the scissor-link configuration, which contains duplets. Most of the studies, however, have been focused on geometric and structural design of single layer forms, formulation for configuration, nonlinear analysis and optimal form findings. From the structural and architectural points of view, however, multi-layer deployable free forms have many advantages. In this work, formulation for multi-layer forms is developed more accurately by satisfying foldability conditions. Feasibility of these types is discussed by proposing simple connections and evaluating different design parameters. Flat multi-layer forms of 6m to 15m span are designed and compared by weight and maximum deflection as objective functions, to select the optimal form. Results show that some geometric parameters have to be defined and then feasibility of the required geometry should be tested numerically.
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Keywords: connection; deflection; deployable structures; foldable; freeform; multi-layer; scissor-link; single-layer; weight

Document Type: Research Article

Affiliations: Department of Civil Engineering, Faculty of Engineering, University of Zanjan 45371-38791, University Blvd., Zanjan, Iran, Email: [email protected]

Publication date: September 26, 2016

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