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| Analysis of wheel-rail and equivalent human dynamic response due to low-order harmonic wear wheel-sets |
| Received:January 20, 2019 Revised:May 16, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20190120002 |
| KeyWord:low-order wear wheel-sets 13 degree-of-freedom human-train dynamic model lumped mass method wheel/rail contact force human comfort |
| Author | Institution |
| 李可 |
上海工程技术大学 机械与汽车工程学院, 上海 |
| 刘学文 |
上海工程技术大学 机械与汽车工程学院, 上海 |
| 张经纬 |
上海工程技术大学 机械与汽车工程学院, 上海 |
| 王岩松 |
上海工程技术大学 机械与汽车工程学院, 上海 |
| 张文静 |
上海工程技术大学 机械与汽车工程学院, 上海 |
| 谢军 |
南昌大学 信息工程学院, 江西 |
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| Abstract: |
| Low-order harmonic wear wheel-set will not only cause high-order harmonic wear,but also promote stimulate larger train vibration,which would affect passenger comfort.The train is represented by a traditional 10 degree-of-freedom model,and a 13-degree-of-freedom human-train model is formed.Thus,the equivalent occupant model can be established to study the influence of different wheel-sets on the vibration characteristics,and the cumulative calculation errors caused by incorporating individual occupants into the system can be avoided.In the calculation process,the track structure is represented by a multi-layer beam model,and the wheel-rail contact loss is considered.The results show that the increase of driving speed,wave depth amplitude and wheel-set order will cause the train to jump and affect the running safety.In addition,the vertical acceleration of the equivalent human body at the front bogie is greater than that of the car body under the same wheelset condition,so the comfort of the passengers should be evaluated by the vibration response of the equivalent human body rather than the train. |
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