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Study on postbuckling of axial compressed elastoplastic functionally graded cylindrical shells

机译:轴向压缩弹塑性功能梯度圆柱壳的出现研究

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Postbuckling of plates and shells is an important and cumbersome problem in the structural stability field. Presently, postbuckling behaviors of elastoplastic functionally graded cylindrical shells are investigated by a numerical simulation. The elastoplastic material properties are assumed to be of a multilinear hardening type, according to the constituent distributions, and are modeled using the laminate method. The Riks algorithm is used to obtain the equilibrium path. The postbuckling deformation and stain history of elastoplastic functionally graded cylindrical shells are investigated and various effects of the shell thickness and the constituent distributions are discussed. The results show material unloading effects in the postbuckling state.
机译:底板和贝壳的出现是结构稳定场中的一个重要而繁琐的问题。 目前,通过数值模拟研究了弹性塑性功能梯度圆柱形壳的后突出的行为。 假设弹性材料特性根据构成分布,使用层压方法进行建模。 RIKS算法用于获得均衡路径。 研究了弹性塑料功能梯形圆柱壳的出现后变形和污渍历史,并讨论了壳厚度和组成分布的各种效果。 结果表明了出现封闭状态的材料卸载效果。

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