层合板准静态压痕损伤分析  

Analysis of Indentation Damange in Composites Laminate Under Transverse Static Loads

作　　者：张博平[1] 李禹[1] 

机构地区：[1]西北工业大学航空学院,陕西西安710072

出　　处：《航空计算技术》2006年第6期21-23,共3页Aeronautical Computing Technique

摘　　要：对复合材料层合板进行了横向静态压痕试验,得到了载荷-位移曲线。依据曲线上的位移值,采用九节点壳单元、三维Tsai-W u失效判和损伤层刚度折减方法,对准静态压痕损伤进行了计算,并与超声C扫描压痕损伤检测图像做了比较。结果表明,损伤仿真与实际损伤检测图一致性好。Tests are performed, measuring load - deformation curves in a fiber reinforced composite laminations subjected to transverse static load. Using 9-nodes shell element and 3-D Tsai-Wu failure criterion and the method of local stiffness depression for damage lamina, the indentation damage of composite laminations is calculated in according to the displacement value of load-deformation curve obtained, and the actual damage shape and size of the laminate are obtained by means of Ultrapact II C - scan device. The results of damage simulation are coincided with the test ones after comparison.

关 键 词：复合材料 准静态压痕 损伤与检测 

分 类 号：O242[理学—计算数学]