Buckling and post-buckling responses of rotating clamped–clamped functionally graded microbeams in thermal environment are examined on the basis of the Euler–Bernoulli beam assumption. To enrich the formulation with the size effect the modified couple stress theory is employed. The temperature dependency of material properties is considered. The nonlinear finite element technique alongside with the Newton–Raphson technique is utilized to extract the prestressed deformation. Moreover, the direct iteration method is employed to determine the buckling point and post-buckling equilibrium path. The impacts of material length scale parameter, volume fraction exponent, rotor radius, microbeam length to its thickness proportion and rotation speed on the presented outcomes are examined.

根据欧拉-伯努利梁假设，研究了热环境中旋转夹紧的功能梯度微束的屈曲和屈曲后响应。为了使配方具有尺寸效果，采用了改进的耦合应力理论。考虑材料特性的温度依赖性。非线性有限元技术与牛顿-拉夫森技术一起被用于提取预应力变形。此外，采用直接迭代法确定屈曲点和屈曲后的平衡路径。研究了材料长度比例参数，体积分数指数，转子半径，微束长度对其厚度比例和转速对所提出结果的影响。