轧机非线性传动系统冲击扭振的研究与抑制

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振动与冲击 ›› 2010, Vol. 29 ›› Issue (7) : 179-183.

论文

轧机非线性传动系统冲击扭振的研究与抑制

刘浩然1;张业宽1;李晓梅2;刘爽1

作者信息 +

Investigation and restraining of impact torsional vibration of rolling mill’s nonlinear drive system

LIU Hao-ran1;ZHANG Ye-kuan1;LI Xiao-mei2;LIU Shuang1

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文章历史 +

摘要

以轴系含非线性阻尼和非线性刚度的两惯量轧机主传动系统为研究对象，建立其在冲击扰动作用下的动力学方程。分析了该系统的稳定性，得到了阻尼与刚度对系统稳定性的影响关系。采用多尺度法求解系统的一阶近似解，得到系统的扭转冲击响应，并通过对其进行数值仿真，讨论了主传动轴系阻尼非线性和刚度非线性对轧机传动系统冲击响应的影响规律，从而找出轧机系统冲击减振的方法。研究结果为抑制冲击扰动引起的轧机轴系扭转振动提供一定理论指导。

Abstract

The dynamics equations of main drive system of a two-mass rolling mill with nonlinear damping and nonlinear stiffness are established under the action of impact moment. The stability of system is analyzed, and the influence relations among damping and stiffness with the stability of system are given. The system’s first-order approximate solution is obtained with the aid of multiple time scales method, so the torsional vibration responses of system are obtained. By means of simulation, the influences of nonlinear damping and nonlinear stiffness of shafting on vibration responses of the rolling mill’s drive system are discussed. Finally, the methods of impact vibration reduction of rolling mill are found. The research results provide theory basis and reference for restraining torsional vibration of rolling mill caused by impact disturbance.

导出引用

刘浩然;张业宽;李晓梅;刘爽. 轧机非线性传动系统冲击扭振的研究与抑制[J]. 振动与冲击, 2010, 29(7): 179-183

LIU Hao-ran;ZHANG Ye-kuan;LI Xiao-mei;LIU Shuang. Investigation and restraining of impact torsional vibration of rolling mill’s nonlinear drive system[J]. Journal of Vibration and Shock, 2010, 29(7): 179-183