FINITE ELEMENT CALCULATION ON ELASTIC-PLASTIC DYNAMIC BUCKLING OF A BAR WITH FINITE INITIAL IMPERFECTION UNDER AXIAL IMPACT
Jie Min(Huazhong University of Science and Technology)
Using the finite element method, the dynamic buckling of a bar with finite initial imperfection under axial impact is analyzed in this paper. The buckling time is solved through a deformation work dependence buckling criterion. The effects of the shape and magnitude of initial imperfection and impact load on the bucklling time are also calculated.