VISCO-PLASTIC AND LARGE DEFORMATION ANALYSIS OF AXIAL SYMMETRIC DEFORMATION OF THIN-WALLED CIRCULAR TUBE.

A dynamic structural analysis involving material and geometrical nonlinear characteristics is proposed and applied to a practical problem. This analysis is based on the finite element method and the direct numerical integration, and can be used to predict the crushing behavior of various structures. This paper treats a problem of axially symmetrical collapse of a thin-walled cylinder under axial compressive impact load. The result of the calculation was compared with the experiment, and the dynamic characteristics of the thin-walled cylinder at the time of collapse were investigated.