关键词: stiffened plate, nonlinearity, dynamic buckling, fluid-solid impact, structural stability, thermal buckling, thermal postbuckling, moderately thick plate, perturbation method

Abstract: A thernml postbuckling analysis is presenled for a moderately thick rectangular plale slthjeeled to(I) uniform and non-uniform tent-like temperature loading:and(2) combined axial compression and uniform temperature loading.The initial geometrical imperfection of plate is taken into accaunt.The formulations are based on the Reissner-Mindlin plale theory considering the effects of rotarl inertia and transverse shear deformation.The analysis uses a deflection-type perturbation technique to determine the thermal bucklittg loads attd postbuckling equilibrium paths.Numerical examples are presented that relate to the performances of perfect and imperfet.moderately thick rectangular plates and are compared with the results predicted by the thin plate theory.

Key words: stiffened plate, nonlinearity, dynamic buckling, fluid-solid impact, structural stability, thermal buckling, thermal postbuckling, moderately thick plate, perturbation method