Study on the Dynamics of the Three-piece Bogie Vehicle with the Mid-brace Based on the Single Orientation Damper

摘要

The freight wagon equipped with the three pieces bogies is applied with the high relative friction to improve the dynamic performance of the empty case. With the velocity increasing, the empty performance will low down and become worse than the loaded case. Especially the vertical performance of the empty case will become worse with the relative friction coefficient largely decreased. The worse performance results from that the vibration energy will increase, and the relative friction coefficient will be lowed down in some degree and the resistance is not to damp the vibration when the velocity is increasing to a certain value. The passive damp control idea is inferred to increase the resistance when the relative friction coefficient is lowed down. The empty performance will be improved with the passive resistance damper equipped. The simulation result has shown that the vertical ride index and vibration acceleration is largely improved with the resistance controller when the relative friction coefficient is low and the velocity is high.