J307轮箍径-轴向轧制变形分析

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

提出基于环件外径实时变化的辊系运动自适应控制策略,以J307轮箍为研究对象,基于Marc/SuperForm有限元软件子程序开发,实现对轮箍轧制全过程的三维有限元模拟,分析轮箍轧制过程的尺寸变化、变形分布及轧辊受力等信息。结果表明:在既定工艺条件下,轧制第9~13圈时轮箍外径增量较大,最大达78 mm/圈;轧制过程轮箍断面心部变形最小,第9圈前心部变形主要发生在径向变形区,第9圈后轴向变形区也发生明显变形,轧制结束时断面心部累积变形应变达1.09;主辊和芯辊受力在轮缘孔型完全充满时均达最大、约1400 kN,锥辊在外径达912 mm时受力最大、约900 kN。

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 1400 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.