对209P型客车转向架摇枕安全吊座断裂原因进行了分析，并提出了改进建议。
The causes to breaking of bolster safety hangers on 209P passenger car bogies are analyzed, and suggestions for improvement are given.
通过建立转8a型转向架摇枕与枕簧的力学关系模型，利用已知的摇枕实测载荷谱，分析确定出了枕簧的载荷谱。
The load spectrum of the bolster spring is determined by means of establishing the mechanics model of bolster and spring of Zhuan 8a type bogie, and by using a known load spectrum of the bolster.
通过对采用无摇枕转向架的高速客车悬挂系统横向模型的仿真实验，研究了半主动阻尼控制改善车辆运行平稳性的有效性。
During the simulation of the secondary lateral suspensions for the high speed passenger vehicle with no-bolster bogie, the effective using semi-active control to improve the ride comfort are studied.
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