Study on modal flexibility and finite element simulation of main drive system of large-scale shaft wedge cross rolling mill
In view of the vibration phenomenon during the rolling process of large-scale shaft wedge cross rolling mill,the dynamic model of the main drive system of large-scale shaft wedge cross rolling mill was constructed by using the simplified method of spring-mass system dynamic model.Based on this,the torsional vibration characteristics were analyzed,and the natural frequency and principal vibration mode were obtained.According to the inherent characteristics of the system modal,the flexibility and energy distribution of each order mo-dal of the system were analyzed,and the finite element dynamic analysis module was constructed by using ANASYS software to carry out modal analysis of the transmission system,and the natural frequencies and vibration modes of each order modal of the whole system were obtained.The vibration characteristics of each order were shown in the vibration mode diagram.To reduce the computational complexity,the simplified model was used to simulate the complex shaft structure for the drive shaft connection,but the drive model may introduce er-rors and cannot accurately capture all modals.The torsional vibration frequency of the theoretical system is basically consistent with that of the modal analysis results.In this simulation,the simplified transmission shaft connection has no significant effect on the analysis results.The results show that the first-order modal is the most sensitive and easily excited modal,and the energy of the system is mainly concen-trated near the roll,and it is easy to be affected by self-excited vibration.The system can be further studied and optimized accordingly.
wedge cross rollingtorsional vibrationmodal analysisfinite element method
万方数据
维普
