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咬钢冲击及打滑等因素极易导致轧机主传动系统产生振动,是轧机主传动系统异常损坏的主要因素。根据厚板轧机主传动系统实际结构形式,将该主传动系统简化为3自由度系统含间隙离散动力学模型,采用Runge-Kutta方法计算了含间隙碰撞系统在周期激励下的动力学响应。文中选择间隙闭合界面为庞加莱截面,对系统进行混沌动力学分析,发现系统具有混沌运动特征,结合现场工程实际对轧机进行了分析。论文的研究为该类轧机主传动的振动研究和控制奠定了基础。
Biting steel impact and skidding and other factors can easily lead to rolling mill main drive system vibration is the main transmission system abnormal damage to the main factors. According to the actual structure of the main drive system of the plate rolling mill, the main drive system is simplified to a three-degree-of-freedom system with interspace discrete dynamics model. Runge-Kutta method is used to calculate the dynamic response of the interspace collision-containing system under periodic excitation. In this paper, the gap closure interface is chosen as Poincaré section, and the chaotic dynamics analysis of the system is carried out. The chaotic characteristics of the system are found. The rolling mill is analyzed according to the field engineering practice. The research of the thesis lays the foundation for the vibration research and control of the main drive of this type of rolling mill.