In this paper, the three-dimensional post-buckling analysis of functionally graded materials plate (FGM) with temperature independent (TID) and dependent (TD) material properties under different types of thermal loads is examined. The analysis is performed by a modified first-order enhanced solid-shell element. The formulation is based on the first-order shear deformation theory (FSDT) with a special representation of the transverse shear strains imposed in the compatible strain part. To subdue locking problems, two methods are employed the assumed natural strain (ANS) method and the enhanced assumed strain (EAS) method with a minimal number of internal parameters. Numerical results of the present research are compared and validated with the existing studies on the thermal post-buckling of FGM plates. Numerical results are also provided to explore the effects of power-law index and different geometrical parameters of the FGM plates subjected to different types of thermal loads.

在本文中，研究了功能梯度材料板 (FGM) 在不同类型的热载荷下具有温度无关 (TID) 和相关 (TD) 材料特性的三维后屈曲分析。分析是通过改进的一阶增强型固体-壳单元进行的。该公式基于一阶剪切变形理论 (FSDT)，具有对相容应变部分中施加的横向剪切应变的特殊表示。为了克服锁定问题，采用了两种方法：假设自然应变（ANS）方法和具有最少内部参数的增强假设应变（EAS）方法。本研究的数值结果与现有的 FGM 板热后屈曲研究进行了比较和验证。