In order to improve the interface strength between composite ribs and skin,stitching is an effective method.Finite element model(FEM)analysis and axial compression test were carried out on the non damage stitched stiffened panel and the impact damage stitched stiffened panel.The cohesive zone model was used to simulate the interface and the bonding element was used to simulate the stitching for FEM analysis.The deviation between the test results and FEM results is no more than 8.5％,which shows that the FEM of cohesive model and bonding element is feasible.The test results and the FEM results both show that the stitching has no significant effect on the compressive capacity of composite stiffened panel.
关键词
复合材料/缝合/冲击损伤/压缩强度/有限元模拟
Key words
Composite material/Stitching/Impact damage/Compression strength/Finite element simulation
维普
万方数据