The bifurcation stability of sandwich sector plates, primarily constructed from lead halide perovskite skins known for their significant photostrictive and electrostrictive properties, is explored. These properties render them highly relevant for multiphysics applications. The influence of a photo-induced thermal environment on the behavior of these plates is also examined. A notable challenge, the inherent stiffness of these structures, is addressed by integrating a nanocomposite laminated core composed of a polymer matrix and graphene platelet (GPL) reinforcers. The GPLs are distributed throughout the core layers according to functionally graded models, significantly enhancing structural integrity. To effectively model the core environment, the Halpin-Tsai micromechanical rule is employed. The structural displacement field is modeled using the first-order shear deformation theory. Moreover, the von-Kármán geometrically nonlinear strain-displacement relations are applied. The constitutive relationships are governed by the theory of linear photo-thermo-electro-elasticity, providing a framework for the analysis of perovskite-based structures. The reorganization of bifurcation points from the pre-buckling route and the linearization of stability equations are performed using the adjacent-equilibrium criterion. The generalized differential quadrature (GDQ) method is utilized to solve the equilibrium equations of pre-buckling and the stability equations of buckling. This comprehensive investigation reveals the critical influence of photonic, electrical, and rotational stimuli on the stability characteristics of advanced perovskite-based sandwich sector plates, demonstrating potential advancements in multiphysics applications.

中文翻译：

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光子、电和惯性负载的相互作用对具有基于 GPL 的纳米复合材料核心的旋转扇形钙钛矿夹层板的稳定性的影响


探讨了夹层扇形板的分叉稳定性，该夹层扇形板主要由卤化铅钙钛矿皮构成，以其显着的光致伸缩和电致伸缩特性而闻名。这些特性使它们与多物理场应用高度相关。还研究了光致热环境对这些板的行为的影响。一个值得注意的挑战，即这些结构的固有刚度，可以通过集成由聚合物基体和石墨烯片（GPL）增强剂组成的纳米复合材料层压芯来解决。 GPL 根据功能分级模型分布在整个核心层，显着增强了结构完整性。为了有效地模拟核心环境，采用了 Halpin-Tsai 微机械规则。使用一阶剪切变形理论对结构位移场进行建模。此外，还应用了冯卡门几何非线性应变-位移关系。本构关系受线性光热电弹性理论控制，为钙钛矿基结构的分析提供了框架。使用邻近平衡准则对预屈曲路径的分叉点进行重组，并对稳定性方程进行线性化。采用广义微分求积法(GDQ)求解预屈曲平衡方程和屈曲稳定性方程。这项全面的研究揭示了光子、电和旋转刺激对先进钙钛矿夹层扇形板稳定性特征的关键影响，展示了多物理场应用的潜在进步。