The shape of strip is calculated by iterative method which combines strip plastic deformation model with rolls elastic deformation model through their calculation results, which can be called results coupling method. Be- cause the shape and rolling force distribution are very sensitive to strip thickness transverse distribution% variation, the iterative course is rather unstable and sometimes convergence cannot be achieved. In addition, the calculating speed of results coupling method is low, which restricts its usable range. To solve the problem, a new model cou- pling method is developed, which takes the force distribution between rolls, rolling force distribution and strip＇s exit transverse displacement distribution as basic unknowns, and integrates strip plastic deformation model and rolls elas- tic deformation model as a unified linear equations through their internal relation, so the iterative calculation between the strip plastic deformation model and rolls elastic deformation model can be avoided. To prove the effectiveness of the model coupling method, two examples are calculated by results coupling method and model coupling method re- spectively. The results of front tension stress, back tension stress, strip~s exit gauge, the force between rolls and rolling force distribution calculated by model coupling method coincide very well with results coupling method. How- ever the calculation course of model coupling method is more steady than results coupling method, and its calculating speed is about ten times as much as the maximal speed of results coupling method, which validates its practicability and reliability.
参考文献
| [1] | 刘宏民,丁开荣,李兴东,江光彪.板形标准曲线的理论计算方法[J].机械工程学报,2008(08):137-142. |
| [2] | LIU Hong-min.Three-Dimensional Rolling Theory and Its Application[M].北京:科学出版社,1999:128. |
| [3] | LIAN Jia-ehuang;LIU Hong-min.Gauge Control and Shape Control of Strip[M].Beijing:Arms Industry Press,1996:65. |
| [4] | 杨轶婷,张清东,王文广,白剑.带钢冷连轧轧件辊系一体化仿真研究[J].轧钢,2007(05):13-16. |
| [5] | 白金兰,张睿,刘红,李东辉,王国栋.冷轧带钢轧制压力分布计算[J].沈阳航空工业学院学报,2004(04):26-28. |
| [6] | LIU Yu-li;HU Xi-zeng;ZHAO Yong-he .Calculation of Contact Pressure Distribution Between Rolls[J].Journal of Northeast Institute of Heavy Machinery,1989,13(04):39. |
| [7] | 刘雪峰,汪凌云.基于影响函数的轧机辊系变形分析及板形预报[J].重庆大学学报（自然科学版）,2000(06):87-90. |
| [8] | WANG Guo dong.Shape Control and Shape Theary[M].北京:冶金工业出版社,1986:289. |
| [9] | 郑振忠,彭艳,刘宏民.求解冷轧带材金属横向流动和前张应力横向分布的一种新型条元变分法[J].钢铁研究学报,1999(05):21-25. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%