With this situation, any amount of axial load can be applied to compressive bar of arbitrary length without bending.
在此状态下可在任意长度的压杆上，加任意大小的轴向载荷，而不产生弯曲。
2
Using the finite element method, the dynamic buckling of a bar with finite initial imperfection under axial impact is analyzed in this paper.
本文用有限元方法分析了一定初缺陷杆受轴向冲击的弹塑性动态屈曲。
3
Combining with three nodes isoparametric axial force element, the new element can be used to accurately calculate the shear flow action between bar and skin in thin-wall structure.