In order to study the influence of the motor suspension parameters on the dynamic performance of the bogie, the two-degree-of-freedom lateral simplified model and eight-degree-of-freedom lateral bogie model were established, and change of lateral displacement of the frame and the motor relative to the frame and its law were analyzed.Finally, the influence of suspension parameters of the motor on the stability of the bogie was studied.The calculation results show that when the lateral frequency of the motor was close to and slightly smaller than the hunting frequency of the bogie, the lateral displacement of the frame was the smallest, but that of motor relative to the frame is very large. Under this case, the motor is equivalent to a power absorber, the vibration of the frame is transferred to the motor.The smaller the lateral damping ratio of the motor, the smaller the lateral displacement of the frame, the higher the linear critical velocity, the larger the lateral displacement of the motor relative to the frame.In order to take into account both, an appropriate bigger lateral damping ratio is a good choice.
Key words
motor bogie-suspended parameters /
dynamic response /
stability /
linear critical velocity
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References
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