Dynamic Stiffness Characteristics Analysis of Bogie Suspension for Rail Vehicle Based on Big Data-Driven Bench Test | Zendy

Zhihui Niu | Zendy; Jian Su | Zendy; Yinrui Zhang | Zendy; Huiying Lin | Zendy

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Dynamic Stiffness Characteristics Analysis of Bogie Suspension for Rail Vehicle Based on Big Data-Driven Bench Test

Author(s) -

Zhihui Niu,

Jian Su,

Yinrui Zhang,

Huiying Lin

Publication year - 2018

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2018.2884957

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

The vehicle test big data has important significance for the study of vehicle performance and characteristics. Aiming at the test of the dynamic stiffness characteristics of a bogie suspension system of rail vehicles, a simplified rigid-flexible hybrid model of the bogie is established, and the force condition of the bogie suspension system is analyzed. Based on this simplified model, a mathematical model of the dynamic stiffness of the primary suspension, secondary suspension, and integrated suspension is established. In addition, a method for testing the three-way dynamic stiffness of a bogie suspension system in a complete, assembled state is proposed, and a dynamic stiffness test model of the bogie primary suspension, secondary suspension, and comprehensive suspension is established. Dynamic stiffness tests of the primary suspension, secondary suspension, and integrated suspension were carried out, and according to the big data analysis of the bench test, the dynamic stiffness curve of each suspension in the frequency of 0.5-5 Hz is obtained. The test results show that the dynamic stiffness of the suspension of the bogies varies nonlinearly with the change in frequency. The dynamic stiffness values of the suspensions at different frequencies vary greatly. As a result, the vehicle's operating characteristics cannot be evaluated based on the suspension static stiffness or the suspension stiffness at a single frequency, indicating the necessity of the suspension dynamic stiffness test after the bogie is assembled.

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