ANALYSIS OF NONLINEAR DYNAMICAL STABILITY FOR MODERXTELY THICK RECTANGULAR PLATES

Based on Timoshenko-Mindlin kinematic hypotheses and Hamilton's principle,the governing motion equations for geometrically nonlinear middle-thick rectangular plate are derived. By using incremental parameter method, the nonlinear dynamic stability of simply supported plate under in-plane and transverse harmonic loads is analysized. The effects of some parameters on the dynamic stability are discussed.