振动与冲击
振動與遲擊
진동여충격
Journal of Vibration and Shock
2015年
22期
98-102,120
,共6页
刘浩然%张莹%时培明%赵红旭
劉浩然%張瑩%時培明%趙紅旭
류호연%장형%시배명%조홍욱
四辊冷轧机%动态轧制力%平均法%分岔%混沌
四輥冷軋機%動態軋製力%平均法%分岔%混沌
사곤랭알궤%동태알제력%평균법%분차%혼돈
four-roll cold mill%dynamic rolling force%average method%bifurcation%chaos
针对四辊冷轧机座辊系系统,考虑轧辊振动位移对轧制力影响,建立基于动态轧制力的非线性七自由度振动模型;用平均法求解该模型获得系统的幅频特性方程,利用奇异性理论获得系统的分岔行为。通过现场数据分析各参数对幅频特性及对系统分岔、混沌特性影响。可为四辊冷轧机的动力学研究、抑制振动提供理论参考。
針對四輥冷軋機座輥繫繫統,攷慮軋輥振動位移對軋製力影響,建立基于動態軋製力的非線性七自由度振動模型;用平均法求解該模型穫得繫統的幅頻特性方程,利用奇異性理論穫得繫統的分岔行為。通過現場數據分析各參數對幅頻特性及對繫統分岔、混沌特性影響。可為四輥冷軋機的動力學研究、抑製振動提供理論參攷。
침대사곤랭알궤좌곤계계통,고필알곤진동위이대알제력영향,건립기우동태알제력적비선성칠자유도진동모형;용평균법구해해모형획득계통적폭빈특성방정,이용기이성이론획득계통적분차행위。통과현장수거분석각삼수대폭빈특성급대계통분차、혼돈특성영향。가위사곤랭알궤적동역학연구、억제진동제공이론삼고。
Consideringtheinfluenceofrollvibrationontherollingforce,anonlinearsevendegreesoffreedom vibration model was established for the stand rolls system of a four-roll cold mill.The amplitude-frequency characteristic equation of the nonlinear multiple degrees of freedom model was derived by using the average method,further,the bifurcation behavior of the system was revealed in light of the singularity theory.The influence of various parameters on the amplitude-frequency characteristic,and the bifurcation and chaos characteristics of the system were analysed with practical data.The results provide a theoretical reference for studying the kinematics and inhibiting the occurrence of vibration of four-roll cold tandem mills.