四辊轧机辊系弹性变形高效计算方法  

High-efficiency calculation method for roll stack elastic deformation of four-high mill

作　　者：王东城[1,2] 吴燕林[1] 刘宏民[1,2] 

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004 [2]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

出　　处：《钢铁》2015年第11期69-74,共6页Iron and Steel

基　　金：河北省高等学校科学技术研究资助项目(ZD2014034);国家工程中心开发课题资助项目(NECSR-201206);燕山大学青年自主研究计划课题资助项目(14LGA003)

摘　　要：为解决普通影响函数法计算速度慢的缺点,在分析普通影响函数法计算精度与计算速度主要影响因素的基础上,提出了一种新型四辊轧机辊系弹性变形高效计算方法。该方法采用高次多项式描述辊间压力与轧制压力的横向分布,减少了轧辊挠度的计算量;与普通影响函数法相比,求解辊间压力的线性方程组阶数显著降低,大大降低了计算时间。采用该方法后,四辊轧机辊系弹性变形的单次计算时间不超过1 ms,计算精度与划分单元数为100的普通影响函数法计算精度相差很小,为板形在线设定提供了理想的必要条件,并可推广应用于其他机型。The calculation speed of the general influence function method is slow. To solve the problem, a new high-effi- ciency calculation method of roll stack elastic deformation for four-high mill was proposed based on the analysis of the main factors affecting the calculation precision and speed of general influence function method. In this method, the trans- verse distribution of the pressure between rolls and rolling pressure were described by high-order polynomial, reducing the calculated amount of roll deflection. Compared with the general influence function method, the order of linear equations to solve the pressure between rolls was significantly reduced, thus greatly saving the computing time. With this method, the single computing time of roll stack elastic deformation for four-high mill was less than 1 ms. Meanwhile, the computing accuracy matched well with that obtained by general influence fimction when dividing into 100 elements. It provided the ideal necessary condition for the on-line setting of flatness, and it could be applied to other mill types.

关 键 词：计算速度 弹性变形 四辊轧机 辊系 影响函数法 计算精度 辊间压力 计算时间 

分 类 号：TG333[金属学及工艺—金属压力加工]