复合材料层合板冲击损伤及剩余强度分析方法

应用三维逐渐累积损伤理论和分析技术对层合板的冲击及冲击后含损伤的层合板在拉伸载荷下损伤扩展的全过程进行分析.分析中取消了以往研究者对冲击后层合板损伤状态所做的人为假设,将冲击后层合板的实际损伤状态直接用于剩余拉伸强度研究.通过与已有文献结果比较,验证了方法的正确性.

RESEARCH ON LOW VELOCITY IMPACT DAMAGE AND RESIDUAL STRENGTH OF COMPOSITE LAMINATES

An integrated approach has been used to analyze the whole process of damage initiation and development for composite laminates under the impact loading as well as the tensile loading after impact,in which the 3D progressive damage theory was applied.In this work,the real impact damage status of composite laminates has been applied to analyze the residual tensile strength instead of employing the artificial premises adopted by traditional methods for damage status of composite laminates after impact.The validity of the methodologies has been demonstrated by comparing the predicted results with experimental data available in the literature.