脱层复合材料圆柱壳屈曲的实验研究  

Testing Study for Buckling of Composite Cylindrical Shell with Delaminations

作　　者：李道奎[1] 宋先村[1] 唐国金[1] 

机构地区：[1]国防科学技术大学航天与材料工程学院,湖南长沙410073

出　　处：《试验技术与试验机》2006年第1期5-8,41,共5页Test Technology and Testing Machine

基　　金：国家自然科学基金项目(50405006)

摘　　要：脱层的存在将会大大降低层合结构的屈曲载荷。本文首先针对在轴压载荷作用下含脱层的复合材料层合圆柱壳,设计了测试其稳定性的实验方案。然后利用位移传感器、应变传感器、声发射仪器和红外热像仪等实验仪器,对含任意位置脱层与不含脱层的圆柱壳的屈曲载荷进行了实验测试,并对实验进行了精度分析。最后给出了实验结果并进行了讨论。Delaminations may reduce the buckling load of the laminated structure greatly. First, a practical test scheme is laid out for testing the stability of the axial-compressive cylindrical shell including delaminations in this paper. Second, the buckling loads of cylindrical shells with or without arbitrarily located delaminations are tested by the aids of displacement sensors, strain sensors, acoustic emission instrument, high resolution therrnography system and so on. The precision of the results is analyzed. Finally, testing results are got and discussed.

关 键 词：脱层 屈曲载荷 实验测试 复合材料圆柱壳 

分 类 号：O342[理学—固体力学]