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首页> 外文期刊>International journal of aerospace engineering >Numerical Analysis of the Influences of Geometrical Deviation on Delamination in Composite Laminates around the Countersunk Hole
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Numerical Analysis of the Influences of Geometrical Deviation on Delamination in Composite Laminates around the Countersunk Hole

机译：埋头孔周围复合材料层合板中几何偏差对分层影响的数值分析

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摘要

During countersunk hole machining, defects like geometrical deviation of the chamfer angle and delamination are easily introduced into the structure. To investigate the influences of geometrical deviation on delamination propagation around the countersunk hole during assembly, a progressive damage model (PDM) combining cohesive element was proposed and validated. Numerical analyses were then carried out to study delamination propagation behavior under the influences of geometrical parameters including delamination factor, chamfer angle, and location of delamination. The results show that when delamination appears at the transition area of the countersunk hole, the load causing the delamination evolution is much smaller than other cases.
机译：在埋头孔加工中，倒角角度的几何偏差和分层等缺陷很容易引入到结构中。为了研究装配过程中几何偏差对沉孔周围分层扩展的影响，提出并验证了结合有粘性元素的渐进损伤模型（PDM）。然后进行了数值分析，以研究在包括分层因子，倒角和分层位置在内的几何参数影响下的分层传播行为。结果表明，当在埋头孔的过渡区域出现分层时，引起分层发展的载荷要比其他情况小得多。

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