Composite and Sandwich Shells
Composite and Sandwich Shells
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复合材料和夹层外壳
DOI：
10.1007/978-3-7091-2604-2_6
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发表时间：
1992
影响因子：
--
通讯作者：
A. Starlinger
中科院分区：
文献类型：
--
作者：
F. Rammerstorfer;K. Dorninger;A. Starlinger
本文提出了一种用于分析纤维增强复合材料层合壳和夹层壳的几何非线性和材料非线性应力和稳定性的有限壳单元。单元公式是基于退化原理，包括大位移与有效的分析厚度积分。一些微观力学模型进行了讨论，允许估计在壳分析中使用的所有材料的法律。检查适当的失效准则，并考虑后开裂，后屈曲和后屈曲刚度允许调查的渐进损伤。此外，在考虑金属基复合材料（MMC）壳体时考虑了各向异性塑性效应。一些计算实例和与实验结果的比较表明，扩展范围的复合材料的具体问题，可以覆盖这些层合和夹层单元。
Finite shell elements for geometrically and materially nonlinear stress and stability analyses of layered fibre reinforced composite shells as well as sandwich shells with orthotropic core material are presented. The element formulations are based on the degeneration principle including large displacements with an efficient analytical thickness integration. Some micromechanical models are discussed which allow the estimation of over-all material laws used in the shell analyses. Examining suitable failure criteria and taking into account post-cracking, post-wrinkling and post-buckling stiffnesses allow for the investigation of progressive damage. Furthermore, anisotropic plasticity effects are taken into account for consideration of metal matrix composite (MMC) shells. Some computed examples and comparisons with experimental results illustrate that an extended range of composite specific-problems can be covered by these laminated and sandwich elements.