s Soleimanian - M.Sc. student, Malek-Ashtar University of Technology, Tehran, Iran
a Davar - Asistant Professor, Malek-Ashtar University of Technology, Tehran, Iran

Lattice plates have been extensively used as lightweight structures in many industries. In the present research, an exact material modeling using Heaviside distribution functions is presented for lattice composite plates. Using CLT (classical lamination theory), equilibrium equations for lattice composite plates under uniform temperature field are derived. The equations are solved by performing closed form Galerkin method. The thermal buckling modes are obtained by solving the eigenvalue problem. The general solution presented in this paper includes laminates with arbitrary stacking sequences. The accuracy of theoretical model is checked through comparisons with finite elementresults obtained by simulation in ABAQUS and good agreement is achieved

Thermal buckling, Composite, Lattice plates, Galerkin method, Heaviside distribution functions