THERMO-ELASTOVISCOPLASTIC BUCKLING BEHAVIOR OF PLATES

The thermo-elastoviscoplastic buckling behavior of plates is investiga ted. The analysis is based on nonlinear kinematic relations and nonlin ear rate-dependent unified constitutive equations which include both B onder-Partom's and Walker's material models. A finite element approach is employed to predict the inelastic buckling behaviour. Numerical ex amples are given to demonstrate the effects of several parameters, whi ch include temperature, small initial imperfections, and the thickness of the plate. Comparisons of buckling responses for the two models, B odner-Partom's and Walker's, are also presented.