Optimization of Vibration Isolation of Suspension System for A Certain Type of Tractor
In order to improve the stability of railroad tractor,a formula for calculating the vibration isola-tion transmission rate of the vehicle system was derived using the four-pole parameter analysis method.With the goal of minimizing the peak value of the vibration isolation transmission rate,optimization analy-sis was conducted on structural parameters such as the damping coefficient and spring stiffness of the sus-pension system.In addition,with the minimum root mean square value of the vertical vibration response of the tractor as the optimization objective,and the optimal values of the primary suspension parameters of the vehicle system were calculated,a multi-body dynamic model of the tractor was established based on Simpack.The results show that the optimal value error between the theoretical calculation of damping val-ue and the simulation results is almost zero,and the spring stiffness error is 3.4％,which verifies the accu-racy of the theoretical model for optimizing the primary suspension parameters of the tractor based on the four-pole parameter analysis method.In addition,when the disturbance frequency ratio is within 0.5,the damping coefficient has a significant contribution to the vertical vibration response of the tractor;As the damping value of the shock absorber in the primary suspension system increases,the isolation transmis-sion of the tractor system first decreases and then increases,and the impact of spring stiffness on it is simi-lar.
railroad tractorfour-pole parameter analysis methodsuspension systemparameter optimiza-tiontransmissibility of vibration isolation
万方数据
维普
