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- Title
电机弹性架悬对高速列车的 适应性研究 .
- Authors
李广; 张振先; 姚远; 吴国颂
- Abstract
The motor elastic suspension technology has been widely used in high-speed trains at home and abroad to improve the lateral dynamics performance of power bogies. In order to deeply study the influence distinction and adaptation characteristics of the motor elastic suspension on lateral dynamics behaviors of high-speed trains, with respect to two types of typical domestic high-speed trains, the corresponding dynamics models were established in the commercial software SIMPACK, and the accuracy of the dynamics model was verified. The matching relationship of bogie suspension parameters with regard to the high-speed trains was concluded and vehicle’s lateral vibration characteristics were analyzed. Root locus and time-domain simulation methods were adopted to investigate the influence of motor elastic suspension on the lateral dynamics performance of highspeed trains, including linear and nonlinear stabilities as well as running performance on the straight track. The results show that the motor elastic suspension can improve the vehicle’s lateral dynamics performance by primarily consuming the lateral vibration energy of bogie frames, which is based on the principle of dynamic vibration absorption. Specifically, when the high-speed train is prone to bogie hunting, the motor elastic suspension can effectively absorb bogie hunting energy to enhance the vehicle’s lateral stability. When the wheelset hunting is easy to occur on high-speed trains, the motor elastic suspension has a limited function on energy dissipation of the bogie vibration, so it owns little effect on lateral dynamics performance. The selection principle for motor suspension parameters was pointed out: the lateral natural vibration frequency of motors should be consistent with the frequency of bogie hunting instability under service operating conditions, at this time, and the motor elastic suspension can improve the vehicle’s lateral stability significantly. In addition, when a single yaw damper or secondary lateral damper fails in the high-speed train, the influence of the motor elastic suspension on the lateral wheelset force under straight tracks was also researched.
- Subjects
VIBRATION absorption; FREQUENCIES of oscillating systems; LATERAL loads; BOGIES (Vehicles); HIGH speed trains; ENERGY dissipation; ENERGY function; RUNNING speed
- Publication
Journal of Railway Science & Engineering, 2023, Vol 20, Issue 2, p441
- ISSN
1672-7029
- Publication type
Article
- DOI
10.19713/j.cnki.43-1423/u.T20220497