Dynamic Elastic Buckling of Complete Spherical Shells with Initial Imperfections∗ |
| |
| Authors: | Boquan Song Norman Jones |
| |
| Institution: | 1. Department of Civil Engineering , The Zhejiang University , Hangzhou, People's Republic of China;2. Department of Mechanical Engineering , The University of Liverpool , Liverpool, L69 3BX, Great Britain |
| |
| Abstract: | The dynamic elastic buckling behavior of a geometrically imperfect complete spherical shell that is subjected to a uniform external step pressure is examined using Sander's equilibrium and kinematic equations, appropriately modified to include the influence of inertia forces and initial stress-free imperfections in the radius. A finite-difference procedure with either the Houbolt or Park methods of time integration is used to predict the axisym-metric dynamic elastic buckling pressures and associated critical mode numbers. The dynamic buckling pressure is significantly smaller than the corresponding static value for small initial imperfections, but is less imperfection |
| |
| Keywords: | |
|
|
