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.