考虑轴压比的圆钢管抗冲击有限元研究

摘要

In order to study the performance of circle steel tube under axial load which suffers impact load, the non-linear analysis model is built by using finite element analysis software ABAQUS. The analysis subject is a circular tube with one end fixed on and the other end being a movable ring. It can be concluded that axial load level has a marked effect on the failure mode, bearing capacity, deformation and energy. With the increase of axial pressure, the impact force platform value increases gradually, along with midspan deflection and energy consumption.%采用有限元软件ABAQUS建立了构件冲击荷载下的理论分析模型。对一端固定一端可纵向移动薄壁圆钢管进行了有限元研究，分析得到圆钢管在不同轴压力作用下经受侧向冲击后的构件破坏模态，并得到随着轴压力的增加，冲击力平台值逐渐增大，跨中挠度逐渐增大，耗能逐渐增大的结果。