【摘要】 复合材料层合板在静压痕力作用下主要发生层间分层、基体开裂、基体压缩破坏、纤维断裂和纤维压坏这几种损伤模式。本文利用ABAQUS有限元程序,对在静压痕力作用下的复合材料层合板建立一个基于Hashin强度准则的全过程模型,并对各层各单元进行损伤演判。利用有限元模型对碳纤维NCF材料层合板在静压痕力作用下的荷载-位移曲线进行预测,并模拟层合板的损伤全过程,以及预测凹坑深度与静压痕力的关系曲线。对层合板进行静压痕试验,测试复合材料层合板在静压痕力作用下的荷载-位移曲线,并在试验过程中用凹坑深度仪测量层合板的凹坑深度。将数值模拟与试验结果比较,两者结果较为吻合。更多还原

【Abstract】 There are several injury patterns such as delamination,matrix cracking,matrix compression,fiber fracture and fiber crush,when composite laminates are under static indentation force.Based on ABAQUS software,a finite element model is built to simulate the damage evolution in the composite laminates which are under static indentation force.Load-displacement curve,damage evolution process,and dent depth-load of NCF carbon fiber laminates are predicted by the finite element model.Load-displacement curve of composite laminates under the action of static indentation force is made in the quasi-static indentation test and the dent depth of the plate is measured by the dent depth instrument in the test process.The results of numerical simulation and experiment agree well with each other.更多还原