Abstract
A higher-order deformation theory, which accounts for transverse shear and transverse normal strains, is derived for the thermal buckling analysis of antisymmetric angle-ply laminates that are simply supported and subject to a uniform temperature rise. The theory includes six dependent variables but can account for cubic distribution of in-plane displacements and parabolic distribution of transverse normal displacement. By using the present higher-order displacement field and the three-dimensional Hooke's law, exact-closed form solutions of the thermal buckling temperature are obtained. For purposes of comparison, numerical values of buckling temperature based on the first-order shear deformation theory and Reddy's higher-order shear deformation theory are also calculated, by reducing the present higher-order deformation theory. The results show that surprising discrepancies exist among the present theory and the other two theories, which indicates the importance of incorporating the effect of transverse normal strain in the thermal buckling analysis of antisymmetric angle-ply laminates.
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