摘要
根据试验研究的结果建立了挖补修理后碳纤维复合材料层合板低速冲击性能分析有限元模型,并对低速冲击响应及挖补板的冲击损伤进行了分析,理论计算与试验结果吻合良好。在此基础上,就母板与补片铺层顺序以及补片偏转对挖补板低速冲击性能的影响进行了研究,结果表明:补片铺层顺序的改变对冲击载荷响应的影响很小,但对表面及内部分层损伤面积和形状的影响却较大;补片偏转5°时,最大冲击载荷提前出现并且显著降低,分层损伤面积变化不大,分层损伤区域长轴方向向着补片偏转方向偏转。
A finite element model of scarf-repaired carbon composite laminate was built to study its low-velocity impact performance based on the experimental research. Impact response and damage of scarf-repaired laminates were analyzed. The theoretical results agreed with the experimental results well. On this basis, the effect of the stacking sequence of the patch and parent plate and mismatch between the patch and parent plate on impact performance of scarf-repaired laminates were investigated. The results show that the variation of patch stacking sequence has little effect on impact force, but has significant effect on the surface damage area and delamination damage area as well as their shape. 5° mismatch can make the maximum impact force arise earlier and lower obviously compared with the match one. The delamination damage area has little change, but the principal axis of the damage area rotates in the same direction of patch rotation.
出处
《高科技纤维与应用》
CAS
2016年第2期32-37,共6页
Hi-Tech Fiber and Application
基金
国家自然科学基金(11472024)
关键词
层合板
铺层顺序
补片偏转
挖补修理
低速冲击
性能
试验
composite laminate
stacking sequence
patch rotation
scarf-repair
low-velocity impact
properties
test
