Abstract: Based on heat transfer theory, friction analysis theory, and thermal elastoplastic analysis theory, SolidWorks 3D modeling software was used to establish a 60 kg/m heavy rail model. Thermal structural coupling finite element analysis of cooling process after heavy rolling with ANSYS Workbench, reveals the distribution and variation of temperature field, stress field and strain field. The results show that the overall temperature distribution of the heavy rail is the highest in the rail head temperature, followed by the waist temperature, and the lowest temperature at the rail bottom. The cooling process of the heavy rail experience the bent rail base-bent rail head-bent rail base-bent rail head, until the final cooling heavy rail still maintained the trend of turning to the rail head ； overall, stress at both ends of the heavy rail is less than that at the middle section, the rail bottom stress is greater than the rail head stress, and the rail waist stress is the minimum.

摘要： 基于传热学理论、摩擦分析理论、以及热弹塑性分析理论等，采用SolidWorks三维建模软件建立60 kg/m重轨模型。采用ANSYS Workbench对重轨终轧后冷却过程进行热结构耦合有限元分析,揭示了温度场，应力 场以及应变场分布情况及变化规律。结果表明，重轨总体温度分布轨头温度最高，轨腰温度次之，轨底温度最低; 重轨出现弯向轨底-弯向轨头-弯向轨底-弯向轨头的变化过程,直到终冷重轨依旧保持着弯向轨头趋势;从整体看, 重轨两端应力小于中段应力，轨底应力大于轨头应力，轨腰应力最小。