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复合材料层合板的低速冲击损伤及其剩余压缩强度研究
引用本文:江浇禹,刘雪惠.复合材料层合板的低速冲击损伤及其剩余压缩强度研究[J].固体力学学报,1995,16(3):244-249.
作者姓名:江浇禹  刘雪惠
作者单位:西南交通大学应用力学所,西北工业大学力学系
摘    要:本文采用理论和实验方法研究了复合材料层合板的低速冲地及其剩余压缩强度。文中利用有限元方法和能量转换原理计算了层合板受到低速冲击的受载最危险状态,以及此时的应力分布;并用Tsai-Wu张量准则判断损伤情况,对产生损伤的单元进行相应的刚度折减,且作重复计算直至不产生新的损伤为止;最后,对受冲击的层合板还进行剩余压缩强度计算。在实验中,采用激光全息无损检测法测量了层合板的冲击损伤,并对受冲击的层合板进行

关 键 词:层合板  压缩强度  复合材料  冲击试验  损伤

THE RESEARCHES ON LOW VELOCITY IMPACT DAMAGE AND RESIDUAL COMPRESSIVE STRENGTH OF COMPOSITE LAMINATES
Jiang Xiaoyu.THE RESEARCHES ON LOW VELOCITY IMPACT DAMAGE AND RESIDUAL COMPRESSIVE STRENGTH OF COMPOSITE LAMINATES[J].Acta Mechnica Solida Sinica,1995,16(3):244-249.
Authors:Jiang Xiaoyu
Abstract:In this paper, the low velocity impact damage and the residual compressive strength of composite laminates were analyzed by using theoretical and experimental methods. The finite element method and the energy conservation principle were used to calculate the most critical loading state in the impact processes and the stress distributions at tnts time. The Ply failure region was calculated by the Tsai-Wu criterion, and reduced elastic moduli were then used in the failure region in subsequent step by step calculation until no new damage appeared. Then the residual compressive strength of composite laminates subjected to low velocity impact was calculated. In tests, the interior impact damage was determined by holographic nondestructive testing, and the residual compressive strength of laminates subjected to impsct was determined also. The theoretical values are good agreement with that of experiment.
Keywords:low velocity impact  laminates  compressive strength
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