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Low velocity impact and compression after impact simulation of thin ply laminates
Composites Part A: Applied Science and Manufacturing ( IF 8.7 ) Pub Date : 2018-03-14 , DOI: 10.1016/j.compositesa.2018.03.017
A. Soto , E.V. González , P. Maimí , F. Martín de la Escalera , J.R. Sainz de Aja , E. Alvarez

Numerical simulations can help in the understanding of the damage sequence of polymer based composite laminates during an impact event, which is a difficult experimental task when dealing with a large number of plies. Low velocity impact and compression after impact in thin ply fabric laminates are studied through numerical simulations in which special attention has been devoted towards the computational efficiency. The impact results show the importance of delamination during the damage initiation, which takes place at few interfaces. After damage initiation, delamination and fiber breakage propagate until a last stage which is mainly governed by fiber breakage. Compression after impact shows a brittle behaviour with almost no damage propagation prior to failure. The numerical models indicate that matrix cracking effects can be assumed negligible for the studied thin ply laminates while delamination and especially the fiber constitutive law shape are important for accurate predictions.



中文翻译:

薄层板的冲击模拟后的低速冲击和压缩

数值模拟可以帮助您了解冲击事件期间聚合物基复合材料层压板的损坏顺序,这在处理大量帘布层时是一项艰巨的实验任务。通过数值模拟研究了薄层织物层压板的低速冲击和冲击后的压缩,其中特别关注了计算效率。冲击结果表明,在损坏开始时发生分层的重要性是在很少的界面处发生的。破坏开始后,分层和纤维断裂传播到最后一个阶段,该阶段主要由纤维断裂控制。冲击后的压缩表现出脆性,在破坏前几乎没有破坏传播。

更新日期:2018-03-14
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