|
|
|
| Vertical–horizontal coupling nonlinear vibration characteristics of rolling mill under mixed lubrication |
| Dong-xiao Hou1, Liang Xu1, Pei-ming Shi2 |
1 School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, Hebei, China
2 School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China |
|
|
|
|
Abstract Considering the dynamic influence of the roll vibration on the lubricant film thickness in the rolling deformation area, nonlinear dynamic rolling forces related to film thickness in the vertical and horizontal directions were obtained based on the Karman’s balance theory. Based on these dynamic rolling forces and the mechanical vibration of the rolling mill, a vertical–horizontal coupling nonlinear vibration dynamic model was established. The amplitude–frequency equation of the main resonance was derived by using the multiple-scale method. At last, the parameters of the 1780 rolling mill were used for numerical simulation, and the time-domain response curves of the system’s vibration displacement and lubricating film thickness under the steady and unsteady conditions were analyzed. The influences of parameters such as interface contact ratio, nonlinear parameters and external disturbances on the primary resonance frequency characteristics were obtained, which provided a theoretical reference for the suppression of rolling mill vibration.
|
|
Received: 15 February 2020
Published: 25 May 2021
|
|
|
|
| Cite this article: |
|
Dong-xiao Hou,Liang Xu,Pei-ming Shi. Vertical–horizontal coupling nonlinear vibration characteristics of rolling mill under mixed lubrication[J]. Journal of Iron and Steel Research International, 2021, 28(5): 574-585.
|
|
|
|
| [1] |
ZHANG Yong-shun, JIANG Wan-lu, LI Zhen-bao, LI Jing-jing. Inducement analysis of nonlinear vibration in rolling mill hydraulic screw down system[J]. Iron and Steel, 2020, 55(4): 106-112. |
| [2] |
BAI Zhen-hua, CUI Ya-ya, LI Xiu-jun, XIA Yi-wei. Development of emulsion pipeline direct mixed lubrication system in double cold reduction mill[J]. Iron and Steel, 2020, 55(1): 56-64. |
| [3] |
LIU Bin，PAN Gui-xiang，LI Peng，LIU Hao-ran， JIANG Jia-hao. Vibration analysis of roll system with nonlinear stiffness of hydraulic cylinde[J]. Iron and Steel, 2017, 52(3): 93-99. |
|
|
|
|
2021, Vol. 28 
