碳纤维／环氧树脂复合材料圆筒在低速横向冲击下的数值研究

Numerical Study of Carbon Fiber Reinforced Epoxy Composite Cylinders Subjected to Low-velocity Transverse Impact

采用ANSYS/LS-DYNA有限元软件对碳纤维/环氧树脂复合材料薄壁圆筒的低速横向冲击进行模拟,运用大变形损伤本构方程和冲击动力学方程对其进行动态响应分析。采用接触力历程、内能历程和位移历程研究了冲击速度、边界条件和铺层顺序对圆筒动态响应的影响,并评价了不同冲击状态下薄壁圆筒的抗冲击性。结果表明,[553/-553/55/-55/0/90]圆筒试样的抗冲击性与其它铺层顺序试样相比较好。

Thin walled carbon fiber remtorced epoxy composite subjected to lowcvelocity transverse impact were studied by the ANSYS/LS-DYNA finite element software, dynamic response analysis was carried out by the use of constitutive equations with large deformation damage and impact dynamic equations. The influence of impactor velocity, boundary condition and stacking sequence on dynamic response of cylinders was investigated using contact force histories, energy histories and displacement histories, and the impact resistance of thin-walled cylinders were also evaluated for different impact conditions. The present results indicate that the [553/ 553/55/ 55/0/90] was more resistant to impact than other stacking sequences.