The existing damage constitutive models for a composite lamina under impact loading have mainly considered four failure modes: longitudinal fiber failure in tension and compression, matrix failure in tension and compression along the transverse direction. However, when subjected to an impact load in the out-of-plane direction, through-thickness compression failure may also occur in laminates. Therefore, the present paper has established a damage constitutive model considering through-thickness compression failure and has compared it to those constitutive models without such consideration to see the improvement in the impact response analysis and to discuss the necessity of including through-thickness compression damage in the simulation. To this end, impact testing was conducted on manufactured composite panels, and the results were used to validate the finite element simulation of composite laminates under impact. The results showed that the constitutive model with the compression failure mode in the thickness direction had higher accuracy in predicting the impact force, displacement, damage, and energy absorption of laminates. The predicted results by the developed constitutive model showed that through-thickness compression damage indeed occurred in the laminates during the impact process, and it was mainly concentrated in the layers near the impact side. In the layers near the rear side, the tension damage of longitudinal fiber and matrix mainly initiated and developed in the annular region around the impact center on the laminates.

现有复合材料层板在冲击载荷下的损伤本构模型主要考虑四种破坏模式：纵向纤维受拉和受压破坏、基体沿横向受拉和受压破坏。然而，当受到面外方向的冲击载荷时，层合板也可能发生全厚度压缩失效。因此，本文建立了考虑全厚度压缩破坏的损伤本构模型，并与未考虑全厚度压缩破坏的本构模型进行了比较，以看出冲击响应分析的改进，并讨论了将全厚度压缩破坏包括在内的必要性。模拟。为此，对制造的复合板进行了冲击测试，结果用于验证复合材料层合板在冲击下的有限元模拟。结果表明，具有厚度方向压缩破坏模式的本构模型在预测层合板的冲击力、位移、损伤和能量吸收方面具有较高的准确性。建立的本构模型的预测结果表明，在冲击过程中，层合板确实发生了全厚度压缩损伤，并且主要集中在靠近冲击侧的层中。在靠近后侧的层中，纵向纤维和基体的拉伸损伤主要在层合板冲击中心周围的环形区域开始和发展。结果表明，具有厚度方向压缩破坏模式的本构模型在预测层合板的冲击力、位移、损伤和能量吸收方面具有较高的准确性。建立的本构模型的预测结果表明，在冲击过程中，层合板确实发生了全厚度压缩损伤，并且主要集中在靠近冲击侧的层中。在靠近后侧的层中，纵向纤维和基体的拉伸损伤主要在层合板冲击中心周围的环形区域开始和发展。结果表明，具有厚度方向压缩破坏模式的本构模型在预测层合板的冲击力、位移、损伤和能量吸收方面具有较高的准确性。建立的本构模型的预测结果表明，在冲击过程中，层合板确实发生了全厚度压缩损伤，并且主要集中在靠近冲击侧的层中。在靠近后侧的层中，纵向纤维和基体的拉伸损伤主要在层合板冲击中心周围的环形区域开始和发展。建立的本构模型的预测结果表明，在冲击过程中，层合板确实发生了全厚度压缩损伤，并且主要集中在靠近冲击侧的层中。在靠近后侧的层中，纵向纤维和基体的拉伸损伤主要在层合板冲击中心周围的环形区域开始和发展。建立的本构模型的预测结果表明，在冲击过程中，层合板确实发生了全厚度压缩损伤，并且主要集中在靠近冲击侧的层中。在靠近后侧的层中，纵向纤维和基体的拉伸损伤主要在层合板冲击中心周围的环形区域开始和发展。