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On the basis of the first-order shear deformation plate theory and the zig-zag deformation as-sumption,an incremental finite element formulation for nonlinear buckling analysis of the composite sandwichplate is deduced and the temperature-dependent thermal and mechanical properties of composite is consid-ered.A finite element method for thermal or thermo-mechanical coupling nonlinear buckling analysis of thecomposite sandwich plate with an interfacial crack damage between face and core is also developed.Numeri-cal results and discussions concerning some typical examples show that the effects of the variation of the ther-mal and mechanical properties with temperature,external compressive loading,size of the damage zone andply angle of the faces on the thermal buckling behavior are significant.
On the basis of the first-order shear deformation plate theory and the zig-zag deformation as-sumption, an incremental finite element formulation for nonlinear buckling analysis of the composite sandwich plate is deduced and the temperature-dependent thermal and mechanical properties of composite is consid -ered.A finite element method for thermal or thermo-mechanical coupling nonlinear buckling analysis of the composite sandwich plate with an interfacial crack damage between face and core is also developed. Numeri-cal results and discussions about some typical examples show that the effects of the variation of the ther-mal and mechanical properties with temperature, external compressive loading, size of the damage zone and angle of the faces on the thermal buckling behavior are significant.