Nonlinear analysis of composite laminated thin plates subjected to lateral pressure and thermal loading and resting on elastic foundations

作者：Shen, HS^*

来源：Composite Structures, 2000, 49(2): 115-128.

DOI：10.1016/S0263-8223(99)00053-7

• large deflection
• thermal postbuckling
• composite laminated plate
• Pasternak-type elastic foundation
• perturbation method

A nonlinear analysis is presented for a simply supported, composite laminated thin plate subjected to a uniform lateral pressure and thermal loading and resting on a two-parameter (Pasternak-type) elastic foundation. The two cases of thermal postbuckling of initially pressurized plates and of large deflection of initially heated plates are considered. The temperature fields considered are associated with a nonuniform tent-like distribution over the plate surface and a linear through-the-thickness temperature gradient, respectively. The material properties are assumed to be independent of temperature. The formulations are based on the classical laminated plate theory, and including the plate-foundation interaction and thermal effects. The analysis uses a mixed Galerkin-perturbation technique to determine the large deflection and postbuckling response of the plate. The numerical illustrations concern the large deflection and thermal postbuckling behavior of antisymmetrically angle-ply and symmetrically cross-ply laminated plates resting on two-parameter elastic foundations from which results for Winkler elastic foundations are obtained as a limiting case.
The effects played by foundation stiffness, the plate aspect ratio, the total number of plies, fiber orientation and initial thermal bending stress as well as initial lateral pressure are studied.

• 出版日期2000-6
• 单位上海交通大学