论文部分内容阅读
基于有限元软件ANSYS/LS-DYNY,模拟了波纹轨腰钢轨的轧制过程。分析轧制波纹轨腰钢轨时,咬入条件、变形区、伸长系数、前后滑区等与轧制普通钢轨的不同。通过其轧制变形特点的分析,找出轧制波纹轨腰钢轨轧制力大的原因。结果表明,轧制波纹轨腰钢轨时,只要轧件与齿型辊接触,就能保证咬入;轧制形变区的存在对金属起到了预变形的作用,同时也是轧制力较大的原因;为了保证波纹轨腰轨头和轨底的均匀伸长,应使轨腰的总体伸长系数与轨头和轨底的伸长系数一致。
Based on the finite element software ANSYS / LS-DYNY, the rolling process of corrugated rail waist rail was simulated. Analysis of the ripple rail rolling rail, the biting conditions, deformation zone, elongation coefficient, before and after the sliding zone and rolling the ordinary rail is different. Through the analysis of its rolling deformation characteristics, to find out the reasons for the rolling force of rolling corrugated rail waist. The results show that when the corrugated rail is rolled, as long as the rolling contact with the toothed roller, the bite can be ensured; the existence of the rolling deformation zone plays a role of pre-deformation of the metal and also the reason of the larger rolling force ; In order to ensure the uniform elongation of the waist rail head and the rail bottom of the corrugated track, the overall elongation coefficient of the rail waist should be consistent with the elongation coefficient of the rail head and the rail bottom.