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《Journal of Vibration and Shock》 2015-22
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Vibration characteristics of a cold rolling mill with a model of seven degrees of freedom and their influence on dynamic rolling force

LIU Hao-ran;ZHANG Ying;SHI Pei-ming;ZHAO Hong-xu;College of Information Science and Engineering,Yanshan University;Tianjin first heavy Electric Automation Co.,Ltd;Institute of Electrical Engineering,Yanshan University;  
Considering the influence of roll vibration on the rolling force,a nonlinear seven degrees of freedom 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.
【Fund】: 国家自然科学基金(51105324);; 河北省科技支撑计划(13211907D)
【CateGory Index】: TG333
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