万向轴倾角对热连轧机振动的影响研究

四辊轧机在轧制过程中，辊系受力非常复杂，研究辊系的振动除考虑其它因素外还应考虑万向接轴附加弯矩的影响。建立工作辊耦合动力学模型，证明辊系振动存在水平和垂直方向的耦合关系，并进行数值仿真，得出万向轴倾角的存在使部分扭振转换成万向接轴弯振，进而影响辊系的动力学特性；仿真表明，万向轴倾角在一定角度下位移响应会出现分岔等现象。

Impact Study of the Hot Continuous Rolling Mill Vibration on Universal Shaft Inclination Angle

Forces of the four-roll mill roll system in the rolling process are very complex .Researching roll system vibration should take the impact of the universal joint shaft additional bending moment into consideration as well as other factors .Through establishing coupled dynamic model of work roll , it demonstrates that there is the cou-pling relation between horizontal direction and vertical direction in rolling vibration .Because of the universal shaft in-clination angle presence , some part of the torsional vibration which can convert into the universal joint shaft bending vibration affects rolls dynamics vibration by numerical simulation .It also shows that displacement response appears bifurcation phenomena at a certain universal shaft inclination angle , etc.