热应力是监测机组寿命损耗的重要量 ,但现在对热应力的实时计算方法大多是采用解析方法 ,由于解析方法是对转子二维轴对称热传导方程的简化 ,这给热应力的计算结果带来了误差。基于这种背景 ,本文利用了有限元计算热应力场的中间计算结果 ,应用结构可控的前向神经网络 (SC NN)方法 ,仿真了热应力场的整体刚度矩阵代数方程组的求解 ,应用所得的节点位移 ,可求出转子的热应力场。 Thermal stress is an important part of monitoring the unit life loss. However, the real-time calculation method for thermal stress is mostly analytical method. Since the analytical method is to simplify the two-dimensional axisymmetric heat conduction equation of the rotor, it brings the result of thermal stress calculation The error. Based on this background, this paper makes use of the finite element method to calculate the intermediate thermal stress field calculation results. By using the structure-controllable forward neural network (SCNN) method, the whole stiffness matrix algebraic equations of thermal stress field are solved. The resulting node displacement can be obtained rotor thermal stress field.