柔性复合材料的有限变形

S. Luo, T. Chou
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引用次数: 29

摘要

本文研究了有限变形下柔性复合材料的非线性弹性行为。本构关系是基于四阶多项式形式的应变能密度推导出来的,假设应变能密度是初始主材料坐标下拉格朗日应变分量的函数。通过以下实验验证了所得的本构方程:(1)单向复合材料的离轴张力和简单剪切,(2)波浪纤维柔性复合材料的单轴张力。理论和实验结果吻合得很好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Finite deformation of flexible composites
This paper examines the nonlinear elastic behaviour of flexible composites under finite deformation. The constitutive relations have been derived based on a strain-energy density which, in a fourth-order polynomial form, is assumed to be a function of the lagrangian strain components referring to the initial principal material coordinates. The constitutive equations thus obtained are verified by the following experiments: (1) off-axis tension and simple shear for unidirectional composites, and (2) uniaxial tension for flexible composites with wavy fibres. Good agreement has been found between the theory and experiments.
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