Thermal post-buckling analysis of FG-GPLRC laminated plates with interfacial damage

W.B. Shan , Q. Shi , H. Li , N.N. Zhang

Abstract

This study conducts an in-depth analysis of the thermal buckling and post-buckling behavior of functionally graded graphene platelet reinforced composite (FG-GPLRC) plates under thermal loading, with a particular focus on the combined effects of interfacial damage and initial geometric imperfection. Firstly, a displacement field model capable of characterizing interfacial damage features is considered. By considering two different temperature fields, the thermal post-buckling equilibrium equations incorporating interfacial damage effects are derived based on the generalized variational principle. Subsequently, a numerical computational approach combining the finite difference method and iteration method is employed. Finally, through a series of numerical simulations, the influence mechanisms of parameters such as interfacial damage severity, initial geometric imperfections, and material properties are systematically investigated. The results reveal that interfacial damage significantly reduces the critical buckling temperature and thermal post-buckling response, while initial geometric imperfection eliminates the bifurcation phenomenon observed in the post-buckling path response.

Key Words

critical buckling temperature; FG-GPLRC plates; geometric imperfection; interfacial damage; thermal post-buckling

Address

W.B. Shan, Q. Shi, N.N. Zhang — Hunan Electrical College of Technology, Xiangtan, 411101, PR China
H. Li — Changsha Environmental Protection College, Changsha, 410004, PR China

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