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Fatigue damage growth in notched laminates

机译:缺乏缺陷层压板的疲劳损伤生长

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摘要

The issue discussed in the current paper deals with experimental and finite element analysis of fatigue problems for notched rectangular multilayered plates. The fatigue damage growth and fracture at holes in reinforced laminates loaded in tension is presented. The analysis concerns the ±45° glass/epoxy laminated plates with several types of holes such as vertical elliptical, horizontal elliptical and circular. Also a few remarks on the static analytical solutions and fatigue live predictions are presented. Here, the initial results are only demonstrated, which are fundamental for the further analysis. The experiments shown that independently on the shape of the hole the fatigue process includes three stages, i.e. the matrix cracking, the delamination between the plies and the final failure. The first stage of the failure can be described with the help of the standard finite element codes.
机译:本文讨论了本文讨论的问题对缺口矩形多层板的疲劳问题进行实验和有限元分析。介绍了张力张力张力层压板中孔的疲劳损伤生长和裂缝。分析涉及±45°玻璃/环氧树脂层压板,具有几种类型的孔,如垂直椭圆形,水平椭圆形和圆形。还提出了关于静态分析解决方案和疲劳实时预测的一些评论。这里,初始结果仅证明,这是进一步分析的基础。所示的实验表明,独立地对疲劳过程的形状独立地包括三个阶段,即矩阵裂化,层之间的分层和最终失效。可以在标准有限元代码的帮助下描述故障的第一阶段。

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