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通过考察层合板厚度(含铺层形式)、分层位置与大小等因素对压缩强度的影响,并采用局部屈曲、分层扩展以及软化夹杂等3种模型对含分层层合板的压缩强度进行了计算和破坏机理分析。得出如下结果:厚板对分层缺陷不敏感,中等厚度和薄层合板比较敏感;缺陷的位置和大小对层合板压缩强度的影响没有明显的规律可循;3种模型中软化夹杂模型效果较好,说明大部分含缺陷层合板的压缩过程具有分层扩展、基体开裂等损伤交杂在一起的特点,这导致了试件的破坏。
The compressive strength of laminated laminates was investigated by examining the effects of laminate thickness (including lay-up), location and size of laminates on compressive strength, and using local buckling, delamination and softening inclusions The calculation and destruction mechanism analysis. The results are as follows: the thick slab is not sensitive to the delamination defects, the middle thickness and the thin slab are sensitive; the position and size of the flaw have no obvious regularity on the compressive strength of the laminate; the effect of softening inclusions in the three models Better, indicating that most of the defects of the laminate compression process with delamination expansion, matrix cracking and other damage mixed together, which led to the destruction of the specimen.