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由于扭振造成的扭矩放大系数可高达4—6,以致造成传动部件的破坏。因此,对我国鞍钢(A)、武钢(W)、本钢(B)、上钢—厂(S)使用的带纲热连轧机主传动系统的扭振进行计算分析,对消化引进设备及改造现有设备都有一定意义。轴系扭振计算,包括求轴系的固有频率、振型及受迫振动的振幅。计算轴系瞬态反应的步骤为:建立运动微分方程式,求固有频率及振型曲线;求每种振型轴段力矩比;求各轴段力矩平衡中心;用初始条件求解全部力矩振幅;求各轴段内力矩时间曲线及扭矩放大系数(T.A.F)。上述计算全部通过电子计算机完成的。
Due to torsional vibration torque amplification factor can be as high as 4-6, resulting in damage to the transmission components. Therefore, the calculation and analysis of the torsional vibration of the main drivetrain of the hot strip mill with Anglais steel (A), WISCO (W), Benxi Iron (B) and Shanggang-S (S) Existing equipment has some significance. Shaft torsional vibration calculation, including the natural frequency of seeking Shafting, vibration mode and forced vibration amplitude. Calculating the transient response of the shaft system is as follows: establishing the differential equation of motion, finding the natural frequency and the vibration curve; finding the moment ratio of each type of shaft section; finding the moment balance center of each shaft section; solving all torque amplitudes with initial conditions; Torque curve of each shaft and torque amplification factor (TAF). All of the above calculations are done by computer.