Analytical formulae and applications of vertical dynamic responses for railway vehicles

Yu, Yuewei (author), Song, Yunpeng (author), Zhao, Leilei (author), Zhou, Changcheng (author)

To effectively improve the estimated level of railway vehicles’ vertical dynamic responses and provide a more suitable reference for the selection of its secondary suspension damping parameter, this paper has derived the root mean square values analytical formulae of the car body vertical acceleration, the secondary suspension vertical stroke, and the axle box vertical action force for railway vehicles under the random excitation of the track closer to the actual track characteristics. The correctness of the analytical formulae is verified by testing a real vehicle. Then, according to the analytical formulae derived, an analytical design method of the optimal damping ratio for the secondary suspension system is constructed based on the multi-objective programming and single-objective interval constraint analysis, which can be used to find the best trade-off for conflicting performance indices, such as ride comfort, running smoothness, and running safety, and the influences of the system parameters on the optimal damping ratio are analysed. This research can effectively characterize the vertical vibration response of railway vehicles and provide an effective reference for the initial design of the railway vehicle secondary suspension damping parameter.

• Language: English
• Keywords: railway vehicle, vertical dynamic response, model deduction, damping parameter design, optimal compromise
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2023
• Number of pages: Str. 73-81
• Numbering: Vol. 69, no. 1/2
• PID: 20.500.12556/RUL-144972
• UDC: 629.4:531.3
• ISSN on article: 0039-2480
• DOI: 10.5545/sv-jme.2022.375
• COBISS.SI-ID: 146607107
• Publication date in RUL: 27.03.2023

Record is a part of a journal

• Title: Strojniški vestnik
• Shortened title: Stroj. vestn.
• Publisher: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Title: Analitične formule in uporaba vertikalnega dinamičnega odgovora železniških vozil
• Keywords: železniško vozilo, vertikalni dinamični odgovor, izpeljava modela, projektiranje parametrov blaženja, optimalen kompromis, analiza vpliva stopnje blaženja