The numerical analysis was carried out for the low-velocity impact damages of composite laminates. The finite element model was generated using the 3D solid elements and interfacial cohesive elements. The successive damage models were established for the in-plane and interlaminar damages. The strength criterion and a stiffness degradation scheme were used to characterize various in-plane damage forms. Criterions based on element strain level and energy release rate respectively were applied with the cohesive elements to estimate the initiation and evolution of the delamination. The calculation results of the example problem show good agreement with the test results.
张丽. 复合材料层合板在低速冲击作用下的损伤分析[J]. 科学技术与工程, 2010, (5): .
zhangli. Low-velocity impact damage analysis in composite laminates[J]. Science Technology and Engineering,2010,(5).