Deformation Analysis of Radial–Axial Rolling Process of J307 Railway Tyre

An adaptive control strategy for roller movement based on the real-time change of ring outer diameter was provided. Taking J307 tire as the research object, the 3D finite element simulation of the whole process of the tire rolling was conducted based on the development of Marc/SuperForm finite element software subroutines. The information such as dimensional changes, deformation distribution and roller forces during tire rolling process were analyzed. The results show that under the given process conditions, the increment of out diameter of the tyre is large when rolling the 9th to 13th rotations, with the maxmum increment being 78 mm/rotation. During the rolling process, the deformation of the center of the tire section is the smallest, the deformation of the center mainly occurs in the radial deformation zone before the 9th rotation, while the axial deformation zone after the 9th rotation also has significant deformation. At the end of the rolling process, the cumulative effective strain of the center of the section reaches 1.09. The rolling forces on the main roller and the mandrel reach the maximum of about 1 400 kN when the flange is fully filled, while the force on the cone roller reaches the maximum of about 900 kN when the outer diameter reaches 912 mm.