变摩擦力下板带轧机辊系垂直-水平耦合振动特性  

Vertical-Horizontal Coupling Vibration Characteristics of Strip Mill Rolls Under the Variable Friction

作　　者：侯东晓[1] 彭荣荣[2] 刘浩然[2] 

机构地区：[1]东北大学秦皇岛分校,河北秦皇岛066004 [2]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《东北大学学报（自然科学版）》2013年第11期1615-1619,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51105324);河北省科技支撑计划项目(13211907D);中央高校基本科研业务费专项资金资助项目(N110323008)

摘　　要：考虑轧辊振动情况下轧制界面间变摩擦力因素影响,基于Orowan变形区力平衡理论建立了垂直和水平方向的动态轧制力模型.在此基础上考虑轧机结构振动的影响,建立了板带轧机垂直-水平耦合非线性振动动力学模型.运用多尺度法对该系统进行求解,得到了系统的幅频响应方程,并采用1780轧机参数进行仿真,分析了非线性参数对幅频特性的影响.最后采用奇异性理论分析该耦合系统的分岔行为,得到该耦合系统在2参数平面内的6组不同转迁集及分岔图,这为进一步抑制轧机辊系振动提供了理论指导.A dynamic rolling force model with variable friction factor in vertical and horizontal directions were obtained using the Orowan deformation area force balance theory. Then, a vertical-horizontal coupling nonlinear vibration dynamic model of strip mill was established considering the effect of the structure vibration. The approximate solution was solved by the multiple-scale method, and the amplitude-frequency equation was obtained. Based on the actual parameters of 1780 rolling mill, the characteristics of amplitude-frequency were analyzed under different nonlinear parameters. Finally, the bifurcation behaviors of the coupling system was analyzed by the singularity theory, and 6 group different transition sets and bifurcation diagrams in the 2 parameter planes of the coupling system were obtained, which provided theoretical guidance for the further suppression of mill roll system vibration.

关 键 词：轧机 变摩擦力 垂直-水平耦合振动 分岔 

分 类 号：TH113.1[机械工程—机械设计及理论]