四辊冷带轧机五倍频再生颤振机理的研究  

Regenerative chatter with fifth-octave-mode in 4-H cold rolling mills

作　　者：陈勇辉[1] 李巍华[1] 史铁林[1] 杨叔子[1] 

机构地区：[1]华中科技大学机械科学与工程学院

出　　处：《华中科技大学学报（自然科学版）》2003年第5期55-57,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重大基础研究基金资助项目 (G1 9980 2 0 3 2 0 ) ;湖北省自然科学基金资助项目 (2 0 0 0 j1 2 5 )

摘　　要：研究了四辊冷带轧机五倍频颤振的产生机理 ,探讨了轧机支承辊与工作辊辊隙的复杂力学特性 ,提出了轧机五倍频再生颤振模型 ,并采用数值方法分析了五倍频颤振模型的稳定性 .在此基础上 ,给出了变速轧制防止五倍频颤振的理论分析 ,仿真结果表明了变速防振方法的有效性 ,并进行了合理的解释 .Based on observations and intuition, a dynamic model capturing some of the behavior observed in practice was developed. In order to understand fifth-octave-mode chatter, a fifth-octave-mode regenerative chatter model was proposed due to the regenerative effect of the vibration displacements between adjacent rotations of the backup rolls, and its stability analysis was presented. A theoretical analysis of variable speed on vibration control was developed, and a simulator provided. The simulation results showed that variable speed was effective to suppress fifth-octave-mode chatter.

关 键 词：轧机 颤振 模型 变速 

分 类 号：TH113[机械工程—机械设计及理论]