Abstract This study presents a numerical mesoscale approach to simulate the damage and failure mechanisms of woven laminated composites under low velocity impact loading conditions. First, some measurements were made on samples to obtain a realistic reproduction of the microstructure. This allows relating failure mechanisms in composite laminates with their geometry and topology. A three-dimensional Hashin criterion was developed to investigate the impact behaviour, by accounting for both intralaminar and interlaminar damages. Four failure modes were considered relatively to fibre damage initiation in tension and compression and Puck criteria was employed to capture the initiation of the yarn’s matrix damage. The matrix surrounding undulated yarns were taken into account by an elastoplastic behaviour with maximum-stress failure criteria. Good correlation between numerical and experimental results demonstrated the robustness and the accuracy of the proposed multiscale approach.

中文翻译：

---

用于低速冲击模拟的玻璃纤维/Elium 丙烯酸编织层压板的中尺度建模方法

摘要 本研究提出了一种数值中尺度方法来模拟低速冲击载荷条件下编织层压复合材料的损伤和失效机制。首先，对样品进行了一些测量以获得微观结构的真实再现。这允许将复合层压板中的失效机制与其几何形状和拓扑结构相关联。通过考虑层内和层间损伤，开发了一个三维 Hashin 标准来研究冲击行为。相对于拉伸和压缩中的纤维损伤起始，考虑了四种失效模式，并采用 Puck 标准来捕捉纱线基体损坏的起始。具有最大应力破坏标准的弹塑性行为考虑了围绕波浪形纱线的基体。