Linear Stability Analysis of Self-adaptive Bogie and Solution to Carbody Instability

Qibin  Wang; Jingying  Ren; Mingwei  Piao

doi:10.6180/jase.202410_27(10).0006

Linear Stability Analysis of Self-adaptive Bogie and Solution to Carbody Instability

Qibin Wang¹This email address is being protected from spambots. You need JavaScript enabled to view it., Jingying Ren¹, and Mingwei Piao²

¹College of Locomotive and Rolling Stock Engineering, Dalian Jiaotong University, Dalian, 116028, China

²Mechanical Engineering School, Dalian Jiaotong University, Dalian, 116028, China

Received: October 8, 2023
Accepted: November 29, 2023
Publication Date: December 29, 2023

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202410_27(10).0006

High-speed rail stocks need to seek a more suitable system design method for optimizing the design configuration in terms of system integrity as a typical research case of nonlinear systems. The self-adaptive improvement design based on ICE3 series bogie transforms the complex primary hunting phenomenon into simple carbody instability problem by means of big data mining such as orthogonal decomposition or modal design, and makes the minimum allowable equivalent conicity λemin reduced to (0.03 - 0.05). The linear stability analysis shows that the carbody instability problem of the self-adaptive improved design is caused by the complex interface singularity of the anti-rolling torsion bar, which can be effectively improved by the semi-active inter-vehicles damping technique. Due to the strong robustness of the self-adaptive improvement design, it can be realized to cross the railway dedicated lines with different speed grades, and then conditionally improve the self-cleaning ability of detrimental wear.

Keywords: Self-adaptive Bogie; carbody instability motion; linear stability analysis; complex interface singularity; semi-active damping technique

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