Nonlinear Viscoelastic Response of Unidirectional Polymeric Laminated Composite Plates Under Bending Loads |
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Authors: | S R Falahatgar Manouchehr Salehi |
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Affiliation: | (1) Mechanical Engineering Department, University of Guilan, P.O. Box 3756, Rasht, Iran;(2) Mechanical Engineering Department and Centre of Excellence in Smart Materials and Dynamical Systems, Amirkabir University of Technology, Hafez Ave., Tehran, 1591634311, Iran |
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Abstract: | Nonlinear bending analysis of polymeric laminated composite plate is examined considering material nonlinearity for viscoelastic
matrix material through a Micro–macro approach. The micromechanical Simplified Unit Cell Method (SUCM) in three-dimensional
closed-form solution is used for the overall behavior of the unidirectional composite in any combination of loading conditions.
The elastic fibers are transversely isotropic where Schapery single integral equation in multiaxial stress state describes
the matrix material by recursive-iterative formulation. The finite difference Dynamic Relaxation (DR) method is utilized to
study the bending behavior of Mindlin annular sector plate including geometric nonlinearity under uniform lateral pressure
with clamped and hinged edge constraints. The unsymmetrical laminated plate deflection is predicted for different thicknesses
and also various pressures in different time steps and they are compared with elastic finite element results. As a main objective,
the deflection results of viscoelastic laminated sector plate are obtained for various fiber volume fractions in the composite
system. |
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