受横向冲击作用的缺陷柱能量吸收的有限元分析

Finite Element Analysis of Energy Absorption of Defective Column in Transverse Impact

对于在横向冲击荷载作用下,施加轴力的缺陷柱的屈曲行为采用有限元模拟分析。笔者通过有限元软件对于实验进行模拟,输入相同的边界条件、轴力、速度、加速度和质量等相关参数,从而对缺陷柱受偶然荷载冲击时的能量吸收进行分析。再通过具体实验中测量所得的数据来验证模拟结果,从而可知,受轴力压缩的缺陷柱在受到横向冲击后,试件存在的缺陷类型对于试件的垮塌以及塑性变形产生不同的影响。

The buckling behavior of the defective column subjected to axial force under transverse impact is studied by finite element analysis.We use the finite element software to simulate the experiment,enter the same boundary conditions,axial force,speed,acceleration and mass parameters,so that the impact of the defect when the impact of energy absorption analysis.And then through the specific experiment to measure the data obtained to verify the simulation results,we can see that the defective column under the action of the axial force by the lateral impact,the existence of defects in the specimen after the collapse of the plastic deformation of the different effects.