Proceedings of the 10th International Conference on Science and Technology (ICST 2024)

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Influence of Carbody Flexibility on Vertical Vibration Level of Rail Vehicle

Authors
Farouq Yaffie1, Yunendar Aryo Handoko1, *, Leonardo Gunawan2, Eki Dwi Juliansyah Putra1
1Mechanical Design Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Bandung, Indonesia, 40132
2Lightweight Structures Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Bandung, Indonesia, 40132
*Corresponding author. Email: yunendar.handoko@itb.ac.id
Corresponding Author
Yunendar Aryo Handoko
Available Online 1 July 2025.
DOI
10.2991/978-94-6463-772-4_52How to use a DOI?
Keywords
Rail vehicle; ride comfort; rigid carbody; flexible carbody; vibration level
Abstract

Nowadays, modeling rail vehicles as a multibody in the dynamic simulation of ride comfort with a rigid carbody approach is less relevant—the analysis results are less accurate. The literature review shows that the first vertical bending mode vibration in the flexible carbody coincides with the human sensitivity range according to ISO 2631, in the frequency of 5 to 15 Hz. It can match the vibration from the bogie suspension due to the excitation of track irregularities. This study compares the vibration level in the rigid and flexible car body models when the vehicle travels through a straight track with irregularities. The flexible carbody is modeled using ANSYS software, then simulating the flexible vibration mode of the carbody and then imported to the UM software. The UM software will add components such as bogies, air springs, and traction rods. The results show differences in the vibration level for rigid and flexible carbody. On the flexible carbody model, higher-level vibrations appear in the 9 to 20 Hz frequency range due to the influence of the carbody first vertical bending mode vibration frequency of 13.76 Hz, which is not present in the rigid car body model. Thus, it can be concluded that modeling the carbody flexibility is highly recommended for analyzing the multibody dynamics simulation, especially for ride comfort analysis.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 10th International Conference on Science and Technology (ICST 2024)
Series
Advances in Engineering Research
Publication Date
1 July 2025
ISBN
978-94-6463-772-4
ISSN
2352-5401
DOI
10.2991/978-94-6463-772-4_52How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Farouq Yaffie
AU  - Yunendar Aryo Handoko
AU  - Leonardo Gunawan
AU  - Eki Dwi Juliansyah Putra
PY  - 2025
DA  - 2025/07/01
TI  - Influence of Carbody Flexibility on Vertical Vibration Level of Rail Vehicle
BT  - Proceedings of the 10th International Conference on Science and Technology (ICST 2024)
PB  - Atlantis Press
SP  - 582
EP  - 591
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-772-4_52
DO  - 10.2991/978-94-6463-772-4_52
ID  - Yaffie2025
ER  -