摘要
打滑是大多数轧机传动系统产生扭转振动的主要因素,是导致轧机主传动系统异常破坏的原因之一。基于理论建模和数值模拟方法,针对5 000 mm厚板轧机,研究打滑状态下主传动系统含多个间隙及不同间隙简化形式对系统振动特性的影响规律。根据该轧机主传动系统的实际结构形式,将主传动系统简化为四自由度含多间隙非线性扭振模型,采用龙格-库塔方法进行数值计算,并利用Matlab软件编程进行仿真,得到考虑多间隙影响的系统动态响应数值计算结果。比较分析不同间隙简化形式对系统动态响应及各轴段扭矩放大系数的影响,以及不同间隙大小和位置对系统扭矩放大系数的影响。研究结果可为控制和分析工程实际中轧机间隙的影响提供理论参考。
Slippage is the major factor of torsional vibration generated by the most rolling mill of main drive system, and it＇s one of the causes which lead to destruction. Based on the methods of theoretical modeling and numerical simulation for 5 000 mm heavy plate mill, the influence laws of the main drive system with multi-clearance and different clearances simplified form on vibration performance are investigated under the rolling slippage. A four-degree-of-freedom nonlinear torsional vibration model with multi-clearance of main drive system is established. By using the Runge-Kutta method and Matlab simulation, the numerical computation results of system dynamic response with impact of multi-clearance are shown. The influence of different clearances simplified forms on the system dynamic response and the shaft section torque amplification factor, and the influence of the different clearance of the size and location on the system torque amplification factor are analyzed. The results may provide an important theoretical reference to control and analyze the influence of multi-clearance in the engineering practice.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2014年第3期130-136,共7页
Journal of Mechanical Engineering
基金
河北省自然科学基金资助项目(E2011203176)
关键词
轧机
非线性扭转振动
打滑
多间隙
扭矩放大系数
rolling mill
nonlinear torsional vibration
slippage
multi-clearance
torque amplification factor
