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Nonlinear finite element analysis of laminated composite shells in hygrothermal environments

机译:湿热环境下层合复合壳的非线性有限元分析

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摘要

The large deflection bending behaviour of composite cylindrical shell panels subjected to hygrothermal environments is investigated in this paper. The present finite element formulation considers doubly curved thick shells and includes large deformations with Green-Lagrange strains. The analysis is carried out using quadratic eight-noded isoparametric element and the problem is solved using the incremental modified Newton-Raphson scheme. A parametric study is carried out varying the curvature ratios of composite cylindrical shell panels with simply supported and clamped support conditions.
机译:本文研究了复合圆柱壳板在湿热环境下的大挠度弯曲行为。本发明的有限元公式考虑了双弯曲的厚壳,并且包括格林拉格朗日应变的大变形。使用二次八节点等参单元进行分析,并使用增量修正牛顿-拉夫森方案解决问题。进行了参数研究,以简单支撑和夹紧支撑条件改变复合圆柱壳面板的曲率比。

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