热塑性纤维金属层板的抗低速冲击性能  

Low velocity impact resistance of thermoplastic fiber reinforced metal laminates

作　　者：亓昌[1,2] 付利荣 孙勇 魏文涛[1] 杨姝 QI Chang;FU Lirong;SUN Yong;WEI Wentao;YANG Shu(State Key Laboratory of Structural Analysis for Industrial Equipment(Dalian University of Technology),Dalian,116024,China;State Key Laboratory of Automotive Safety and Energy,Tsinghua University,Beijing 100084,China)

机构地区：[1]工业装备结构分析国家重点实验室(大连理工大学),中国大连116024 [2]清华大学,汽车安全与节能国家重点实验室,中国北京100084

出　　处：《汽车安全与节能学报》2022年第3期421-428,共8页Journal of Automotive Safety and Energy

基　　金：汽车安全与节能国家重点实验室开放基金资助(KF2003)。

摘　　要：研究热塑性纤维金属层板(TFMLs)抗低速冲击性能,可为实际结构设计提供参考。采用2024-T3铝合金、连续玻璃纤维增强改性聚酰胺6单向带和聚乙烯胶膜制备TFMLs3/2。对不同铺层角度样件进行122 J落锤低速冲击试验。基于动力学分析软件LS-DYNA建立TFMLs低速冲击有限元仿真模型,仿真与试验结果对比误差控制在10%以内。结果表明:单向铺层样件出现脆性断裂,正交铺层样件仅发生塑性变形,未产生裂纹;冲击器形状与纤维铺层角度对TFMLs低速冲击响应有重要影响;尖头冲击器冲击时碰撞峰值力相较于平头冲击降低46.5%。正交铺层时内部损伤面积最小,相较于斜向铺层降低53.5%。The low-velocity impact resistance of thermo-plastic fiber metal laminates(TFMLs)was investigated to provide references for the actual structural design.Some thermoplastic fiber metal laminates(TFMLs)-3/2were prepared by using 2024-T3 aluminum alloy,continuous glass fiber reinforced modified polyamide 6unidirectional tape and polyethylene film.Some 122 J drop weight low-speed impact tests were carried out on the samples with different layup angles.Based on the dynamic analysis software LS-DYNA,a finite element simulation model of TFMLs low-speed impact was established,and the comparison error between simulation and test results was controlled within 10%.The results show that the unidirectional layup samples have brittle fracture,and the orthogonal layup samples only have plastic deformation without cracks;And the shape of the impactor and the angle of fiber layup have an important influence on the low-speed impact response of TFMLs;And the peak impact force of the pointed impactor is 46.5%lower than that of the flat impact.The internal damage area is the smallest in the orthogonal layup,which is 53.5%lower than that of the oblique layup.

关 键 词：结构设计 热塑性纤维金属层板(TFMLs) 低速冲击 仿真分析 冲击响应 

分 类 号：TB333[一般工业技术—材料科学与工程] O341[理学—固体力学]