In this paper, thermoelastic stresses of a functionally graded annular rotating disc subjected to internal and external pressure has been studied. Elasticity modulus, thermal conductivity, coefficient of thermal expansion and density of the disc are presumed to vary radially in accordance with three distinct power-law functions and the Poisson's ratio remains constant. A gradient index parameter is opted among -0.5 and 0.5. When this parameter equals zero, the disc turns into an isotropic disc. The distributions of radial and tangential stresses on the disc are obtained for various gradient parameters.

中文翻译：

---

具有径向变化特性的功能梯度环形旋转盘的热弹性应力分析

在本文中，研究了功能梯度环形旋转盘在内部和外部压力下的热弹性应力。假定圆盘的弹性模量、热导率、热膨胀系数和密度根据三个不同的幂律函数径向变化，并且泊松比保持恒定。梯度指数参数在-0.5和0.5之间选择。当该参数等于0时，圆盘变成各向同性圆盘。针对不同的梯度参数，获得了圆盘上的径向和切向应力的分布。