The investigation of thermal load on the graphene-platelets-reinforced composite (GPLRC) is an important issue for developing composite structures in aerospace applications like the spacecraft in near-Sun missions. This paper presents vibration and symmetric thermal buckling behaviors of an annular sandwich plate that consists of two asymmetric piezoelectric surface layers and one GPLRC core layer. The plate is rested on Pasternak foundation. Modified Halpin-Tsai micromechanical model and the rule of mixtures are utilized to calculate the effective material properties. Basic equations are obtained according to the first-order shear deformation theory in which von Kármán's nonlinearity is considered. Then governing equations are derived based on Hamilton's principle and Maxwell static electricity equation. The differential quadrature method is introduced to solve these governing equations under different boundary conditions. Effects of the geometrical sizes, dispersion patterns and weight fractions of graphene-platelets, asymmetric laying of piezoelectric layers, and temperature variation on natural frequencies and critical buckling temperatures of the annular plate are discussed. Results reveal that adding graphene-platelets into the matrix can increase the fundamental natural frequency, while decline the thermal buckling temperature. The combined action of asymmetric configuration of piezoelectric layers and distribution patterns of graphene-platelets has a significant influence on the vibration and thermal buckling.

对石墨烯-血小板增强复合材料（GPLRC）上的热负荷的研究是开发航空航天应用（如近日飞行任务中的航天器）中的复合结构的重要问题。本文介绍了由两个不对称压电表面层和一个GPLRC芯层组成的环形夹层板的振动和对称热屈曲行为。该板放置在Pasternak基础上。利用改进的Halpin-Tsai微力学模型和混合规则来计算有效材料性能。根据一阶剪切变形理论获得基本方程，其中考虑了vonKármán的非线性。然后根据汉密尔顿原理和麦克斯韦静电方程式导出控制方程。引入微分求积法求解不同边界条件下的这些控制方程。讨论了石墨烯薄片的几何尺寸，分散模式和重量分数，压电层的不对称敷设以及温度变化对环形板的固有频率和临界屈曲温度的影响。结果表明，向基体中添加石墨烯-血小板可以增加基波固有频率，同时降低热屈曲温度。压电层的不对称配置和石墨烯-血小板分布模式的组合作用对振动和热屈曲具有重大影响。讨论了石墨烯-血小板的分散模式和重量分数，压电层的不对称敷设以及环形板上固有频率和临界屈曲温度的温度变化。结果表明，向基体中添加石墨烯-血小板可以增加基波固有频率，同时降低热屈曲温度。压电层的不对称配置和石墨烯-血小板分布模式的组合作用对振动和热屈曲具有重大影响。讨论了石墨烯-血小板的分散模式和重量分数，压电层的不对称铺设以及环形板上固有频率和临界屈曲温度的温度变化。结果表明，向基体中添加石墨烯-血小板可以增加基波固有频率，同时降低热屈曲温度。压电层的不对称配置和石墨烯-血小板分布模式的组合作用对振动和热屈曲具有重大影响。结果表明，向基体中添加石墨烯-血小板可以增加基本的固有频率，同时降低热屈曲温度。压电层的不对称配置和石墨烯-血小板分布模式的组合作用对振动和热屈曲具有重大影响。结果表明，向基体中添加石墨烯-血小板可以增加基波固有频率，同时降低热屈曲温度。压电层的不对称配置和石墨烯-血小板分布模式的组合作用对振动和热屈曲具有重大影响。