摘要
轧机在高速轧制过程中经常会发生垂直振动现象,这种振动行为会影响轧制过程的稳定性以及复合板表面质量和结合强度,不利于轧制生产高效连续进行。为了抑制轧机辊系在轧制过程中产生的垂直振动,该研究设计了一种多自由度颗粒阻尼吸振器。建立了安装吸振器的轧机上工作辊垂直非线性参激振动模型。运用多尺度法求解了系统的幅频特性方程,仿真分析了振动系统的奇异特性、时域特性、频谱特性以及幅频特性。对静定轧机上工作辊进行了垂直振动控制试验,对比发现理论分析与试验结果基本吻合,证明所建立的四自由度振动模型的可靠性。结果表明,颗粒阻尼吸振器能够有效地抑制轧机辊系的垂直振动并满足设计要求。
Vertical vibration often occurs in a rolling mill during high-speed rolling process.The vibration behavior will affect the stability of the rolling process and the surface quality and bonding strength of the composite plate,which is not conducive to efficient and continuous rolling production.In order to suppress the vertical vibration of the rolling mill roll system during rolling process,a multi-degree-of-freedom particle damping vibration absorber was designed.The model of vertical nonlinear parametric vibration of the upper work roll on the rolling mill with absorber was established.Using the multi-scale method,the amplitude-frequency characteristic equation of the system was solved,and the singular characteristics,time domain characteristics,frequency spectrum characteristics and amplitude-frequency characteristics of the vibration system were simulated and analysed.The vertical vibration control experiment was carried out on the upper work roll of a statically determinate rolling mill.By the comparison analysis,it is found that the theoretical analysis results are basically consistent with the experimental ones,which proves the reliability of the established four-degree-of-freedom vibration model.The results show that the particle damping vibration absorber can effectively suppress the vertical vibration of the rolling mill roll system and meet the design requirements.
作者
王明
徐慧东
和东平
王涛
王义平
任超然
WANG Ming;XU Huidong;HE Dongping;WANG Tao;WANG Yiping;REN Chaoran(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment,Ministry of Education,Taiyuan 030024,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2023年第2期23-34,78,共13页
Journal of Vibration and Shock
基金
国家重点研发计划(2018YFA0707300)
国家自然科学基金项目(51974196)。
关键词
轧机
颗粒阻尼吸振器
非线性
垂直振动
多尺度法
rolling mill
particle damping absorber
non-linear
vertical vibration
multi-scale method
