复合材料T型缘条边缘冲击试验与数值仿真分析
Impact Test and Numerical Simulation Analysis of T-type Edge Strips in Composite Materials
杨发建 1朱书华 1胡元杰 1徐志胜1
作者信息
摘要
本文对T800/X850复合材料T型缘条进行了边缘冲击试验,并利用Abaqus建立真实尺寸的落锤模型对边缘冲击试验进行了仿真分析,其中采用Puck准则作为复合材料的损伤判据,层间插入粘接单元模拟分层损伤.结果发现边缘冲击损伤主要为基体损伤、界面分层以及面板的凹坑损伤.将仿真结果与试验结果进行对比,有限元仿真得到的边缘冲击过程、失效形式以及动态响应与试验结果有较好的一致性.通过对不同铺层和不同冲击能量下的仿真结果进行对比,发现相同冲击能量下,更薄的复合材料结构在边缘冲击下会发生更大面积的损伤和更大程度损伤扩展.
Abstract
The edge impact tests on T800/X850 composite T-type edge strips was conducted.A real size drop hammer model was established by using software Abaqus to simulate the edge impact test.The Puck criterion was used as the damage criterion for composite materials,and the interlayer bonding elements were inserted to simulate delamination damage.The results showed that the edge impact damage mainly consisted of matrix damage,interface delamination,and panel indentation damage.Comparing the simulation results with the experimental results,the edge impact process,failure mode,and dynamic response obtained from finite element simulation have good consistency with the experimental results.By comparing the simulation results of different thickness and different impact energies,it was found that under the same impact energy,thinner composite structures would occur more extensive damage and greater degree of damage propagation under edge impact.
关键词
复合材料/T型缘条/边缘冲击/力学试验/数值仿真Key words
composite materials/T-type edge strips/edge impact/mechanical tests/numerical simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据