Abstract：This article presents a theoretical analysis and parametric discussion of thermal buckling of sandwich panels with metal truss core under clamped and simply-supported boundary conditions, when subject to uniform thermal loading, by using Ressiner model and assuming the truss core is a continuous material. We ignore the flexural rigidity and bending stiffness of the core, and consider the shear stiffness of the core is the shear stiffness of the sandwich panel. By using the double Fourier expansion of the virtue deformation mode, we get the critical temperature of sandwich panels under clamped boundary, which cannot be analytical solved. The theoretical results are in good agreement with those of the finite element analysis. Then we discuss the influence of cell configuration of lattice-framed materials, the relative density of truss core, and panel thickness on critical buckling temperature.
2014, Vol. 35 
