四辊平整机轧制过程辊系变形有限元分析  

FEA on rolls' deformation in rolling process of 4-roll skin miller

作　　者：李学通[1] 吴志贺[1] 杜凤山[1] 孙静娜[1] 

机构地区：[1]燕山大学机械工程学院,秦皇岛066004

出　　处：《塑性工程学报》2008年第2期126-130,共5页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(50534020);燕山大学博士基金资助项目(B175)。

摘　　要：针对1800mm四辊平整机板形控制的弯辊力预设定问题,采用非线性弹塑性有限元法,建立四辊平整机轧制过程三维计算模型。模型将辊系弹性变形与轧件弹塑性变形耦合在一起,进行统一建模与分析,研究了不同轧制工艺下轧辊压扁、辊系弯曲变形及辊缝形状的分布规律,得出了工作辊弯辊力对辊系变形和辊缝变化的影响关系。计算结果可为建立平整机板形控制的弯辊力精确预设定模型提供理论依据。Aiming at the setting of ben＆roll force for shape control on 1800ram four-roll skin miller, a 3-D rolling model of fourroll skin miller is established using nonlinear elastic-plastic finite element method. In the model, the elastic deformation of rolls and the elastic-plastic deformation of workpiece are coupled in order to obtain more precise simulation results. Based on the coupled model, the changes of roller flattening, roll＇s bending deformation and roll gap geometry are investigated, and then the influence rules of work roll＇s bending force on roll gap changes are obtained. The calculated results will offer theoretic data in order to establish precise resetting model of ben＆roll force for shape control on skin miller.

关 键 词：平整机 有限元 辊系变形 弯辊力 

分 类 号：TG335[金属学及工艺—金属压力加工] O242[理学—计算数学]