Volume 17, Issue 2 (2017)                   Modares Mechanical Engineering 2017, 17(2): 420-426 | Back to browse issues page

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Saberi S, Ghayour M, Mirdamadi H. Behaviour analysis of a bistable twisting hybrid composite plate with an external metal layer and effecting factors on stability region. Modares Mechanical Engineering. 2017; 17 (2) :420-426
URL: http://journals.modares.ac.ir/article-15-4224-en.html
1- Professor
2- Associate Professor of Mechanical Engineering
Abstract:   (1791 Views)
Bistable and multistable plates are types of smart composite structures that have two or more static equilibrium. In this paper, a bistable hybrid composite plate with an external metal layer is studied. The difference between these plates and conventional bistable composite plates and bistable hybrid composite plate with an inner layer of metal is the deformation of them. In other words, unlike the conventional bistable composite plates, in both stable state, transverse curvatures that they have the same size and sign and but twisted curvature is the considerable. The analytical method for studying the behavior of the plate is Rayleigh- Ritz method and minimization of potential energy and finite element used. In order to increase the accuracy of the Rayleigh – Ritz method, out of the plane displacement using is guessed Legendre polynomial. At the frist, states of equilibrium and stable states are determined. To understand better the difference between a bistable hybrid plate with an external metal layer and a CFRP bistable composite plate, a comparison between deform at room temperature, curvature and out of plane displacement are done. In the next part, the moment required to snap through between stable states is achieved. Also, the effect of metal layer thickness on out of plane displacement and stability boundary is investigated. Comparing the results of the proposed shape function and Hyer shape function compared to experimental results and the results of finite element analysis show that the results of the proposed shape function is more accurate.
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Article Type: Research Article | Subject: Composites
Received: 2016/11/15 | Accepted: 2017/01/23 | Published: 2017/02/27

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