四辊轧机辊系弹性变形高效计算方法

doi:10.13228/j.boyuan.issn0449-749x.20150059

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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。

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	王东城
	吴燕林
	刘宏民

关键词 ：四辊轧机, 辊系弹性变形, 影响函数法, 高效计算方法

Abstract：The calculation speed of the general influence function method is slow. To solve the problem, a new high-efficiency 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 transverse 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 function 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.

收稿日期: 2015-02-02 出版日期: 2015-10-29

PACS:

TG335

引用本文:

王东城，吴燕林，刘宏民，. 四辊轧机辊系弹性变形高效计算方法[J]. 钢铁, 2015, 50(11): 69-74. WANG Dong-cheng，，WU Yan-lin，LIU Hong-min，. High-efficiency calculation method for roll stack elastic deformation of four-high mill. Iron and Steel, 2015, 50(11): 69-74.

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