四辊轧机轴承载荷分布及辊系弹性变形

Analysis of bearing load distribution and elastic deformation of roll system for four high strip mill

为准确分析四辊板带轧机滚动轴承的载荷分布及其对板形的影响,采用ANSYS/LS-DYNA有限元软件,建立了包含支撑辊轴承及轴承座组件、轧辊和轧件的四辊轧机三维实体同步耦合有限元分析模型,通过对比和分析咬入阶段、稳定轧制阶段和抛钢阶段各列滚动体的受力情况,得到了轧制过程中轴承载荷的分布规律;与传统有限元计算模型相比,新建模型的轧件横向厚度分布计算结果与实验结果吻合较好。

To precisely analyze the bearing load distribution and its influence on the strip shape of four-high strip mill,the dynamic explicit three-dimensional elastic-plastic finite element model（FEM）was established based on ANSYS/LS-DYNA software,which includes backup roll bearings and its chock components,strip,backup rolls and work rolls.The bearing force conditions of different rolling processes such as biting stage,steady rolling stage and exiting stage were analyzed.The bearing load distribution rules of the whole rolling process were obtained.Compared to the results of the traditional FEM with rigid roll neck,the predicted transverse strip thickness distribution of the new model is much closer to the experimental result.