本文采用三维实体有限元方法,结合周期性边界条件,研究了平面机织复合材料受面内压缩载荷作用时损伤的起始、扩展、直至最终破坏的过程.分析中抛弃了以往损伤研究中采用的"单元消失"技术,对破坏的基体单元和纤维束单元均按特定方向进行刚度折减.制作面内压缩试件并进行了相应的试验.计算结果和试验结果吻合良好,证明研究方法的正确性.
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