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High accuracy post-buckling analysis of moderately thick composite plates using an exact finite strip

机译:使用精确有限条对中厚复合板进行高精度屈曲后分析

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A high accuracy finite strip for the buckling and post-buckling analysis of moderately thick symmetric cross-ply composite plates is presented in this paper by using first order shear deformation theory (FSDT). The presented method, which is designated by the name Full-analytical Finite Strip Method (F-a FSM), provides an efficient and extremely accurate buckling solution in which the Von-Karman's equilibrium set of equations is solved exactly, and the out-of-plane mode shapes and critical loads are obtained. In the post-buckling stage, the Von-Karman's compatibility equation is solved exactly with the assumption that the deflected form after buckling is a combination of obtained buckling modes (single or multiple mode shapes). The principle of minimum potential energy is invoked to solve for the unknown coefficients in the assumed out-of-plane deflection and rotations functions. (C) 2016 Civil-Comp Ltd and Elsevier Ltd. All rights reserved.
机译:本文利用一阶剪切变形理论(FSDT),提出了一种用于中厚对称正交多层复合板屈曲和屈曲后分析的高精度有限条。所提出的方法以全解析有限条法(Fa FSM)命名,它提供了一种有效且极其精确的屈曲解决方案,在该解决方案中,可以精确求解Von-Karman的平衡方程组,并且在平面外获得模态形状和临界载荷。在后屈曲阶段,通过假设屈曲后的挠曲形式是所获得的屈曲模态(单模态或多模态形状)的组合,可以精确求解冯-卡曼相容方程。在假定的面外偏转和旋转函数中,调用最小势能原理来求解未知系数。 (C)2016 Civil-Comp Ltd和Elsevier Ltd.保留所有权利。

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