Effect of Higher Order Shear Deformation on the Nonlinear Dynamic Analysis of Laminated Composite Plate Under In-Plane Loads

Abstract eng:
A nonlinear finite element method is adopted for the large displacement dynamic analysis of anisotropic plates under in-plane compressive loads. The analysis is based on the two-dimensional layered approach with higher order shear deformation theory with five, seven, nine, and eleven degrees of freedom per node, nine-node Lagrangian isoparametric quadrilateral elements are used for the discretization of the laminated plates. A complete bond between the layers is assumed (no delamination occurs). A consistent mass matrix is used in the present study. Damping property is considered by using Rayleigh type damping which is linearly related to the mass and the stiffness matrices. Newmark integration method and Harmonic acceleration method are used for solving the dynamic equilibrium equations. The effects of number of layers, damping factor, and number of degree of freedom per node on the large displacement dynamic analysis are considered. From the present study, noticed that the central deflection increase with increasing the degree of freedom per node.

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