复合材料层压板冲击后压缩研究

摘要

针对同一种材料组成、不同铺层的复合材料层压板, 研究了低速冲击后, 层压板压缩性能.结果表明:层压板在受冲击后的压缩破坏模式为穿过损伤区中间的压缩破坏 (LDM①) .凹坑深度-冲击能量曲线和冲击后压缩破坏应变-凹坑深度曲线均在凹坑深度1.0mm附近出现了拐点现象.取凹坑深度在1.0mm附近试件的破坏强度和破坏应变的平均值, 即为三种铺层的层压板的冲击后压缩强度值和破坏应变值.%The paper studies the compression strength of composite laminates with different plies but of the same components after low velocity impact. Results show that the damage mode of the laminates is compressive failure which extends through the damage area (LDM) after low velocity impact. The knee point phenomenon occurs on curves of the dent depth-impact energy and the compressive failure after impact strain-dent depth relationships while the value of dent depth is 1.0. The average values of compressive strength after impact and compressive failure after impact strain are also obtained when the knee point phenomenon occurs.