Research Article

Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations

Volume: 10 Number: 1 March 4, 2026

Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations

Abstract

This paper presents the development of a model and the analysis of vehicle vibrations for a truck equipped with a rigid axle suspension system while traveling on a road surface subjected to random excitations with time-varying intensity and spectral characteristics. A half-vehicle vibration model in the horizontal transverse plane was developed for a light 1.5-ton truck with a rigid axle, incorporating five degrees of freedom corresponding to three primary moving masses: the rigid axle, the vehicle body, and the driver’s seat. The road surface excitations were simulated using a random signal with time-varying power spectral density to accurately represent the non-stationary and irregular nature of real-world road inputs. Through simulation and vibration analysis, weighted root mean square acceleration values were obtained at the axle, the vehicle body, and the driver’s seat. Vibration characteristics in the horizontal transverse plane were analyzed, and ride comfort at the driver’s seat was evaluated. The results indicate that variations in the spectral characteristics of the road excitations significantly affect ride comfort. As the excitation intensity increases, vibrations at the driver’s seat also increase, and vice versa. This is a key factor influencing driver comfort and safety. The findings provide a scientific basis for improving the design and optimizing the parameters of rigid axle suspension systems to enhance ride comfort and vehicle performance on rough and complex road surfaces.

Keywords

References

  1. [1] Baráth B. The effect of poor road surfaces on vehicle suspension geometry and the misalignment of setup parameters. International Journal of Automotive Science and Technology. 2025;9(1st Future of Vehicles Conference):28-34. https://doi.org/10.30939/ijastech..1766086
  2. [2] Özarslan Yatak M, Hisar Ç, Şahin F. Fuzzy logic controller for half-vehicle active suspension system: an assessment on ride comfort and road holding. International Journal of Automotive Science and Technology. 2024;8(2):179-187. https://doi.org/10.30939/ijastech..1372001
  3. [3] Gürses D. Optimal design of automobile suspension control arm using metaheuristic algorithms. International Journal of Automotive Science and Technology. 2025;9(3):305-309. https://doi.org/10.30939/ijastech..1749077
  4. [4] Luong VV, Nguyen TT. Influence of road quality and suspension stiffness on passenger vehicles oscillation in Viet Nam. Mater Today Proc. 2023. https://doi.org/10.1016/j.matpr.2023.05.155
  5. [5] Jereczek B, Maciejewski I, Krzyżyński T, Królikowski T. Modeling and simulation of the horizontal seat suspension system under random vibration. Procedia Comput Sci. 2022;207:858-866. https://doi.org/10.1016/j.procs.2022.09.141
  6. [6] Rajesh K, Parameshwaran AB, Sridharan NV, Vaithiyanathan S. Vibration-based fault diagnosis of automotive suspension systems using voting-based ensemble learning. Results Eng. 2025;28:107635. https://doi.org/10.1016/j.rineng.2025.107635
  7. [7] Burdzik R. Impact and assessment of suspension stiffness on vibration propagation into vehicle. Sensors. 2023;23(4):1930. https://doi.org/10.3390/s23041930
  8. [8] Zhou X, Ma N, Liu J, Zhang J, Li L. Experimental study on vibration isolation performance of mining dump truck suspensions for improving ride comfort. J Vibroeng. 2025;27(8):in press. https://doi.org/10.21595/jve.2025.24923

Details

Primary Language

English

Subjects

Mechanical Vibrations and Noise

Journal Section

Research Article

Publication Date

March 4, 2026

Submission Date

September 18, 2025

Acceptance Date

February 21, 2026

Published in Issue

Year 2026 Volume: 10 Number: 1

APA
Anh, L. V., Khoa, N. X., & Vu, N. B. (2026). Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations. International Journal of Automotive Science And Technology, 10(1), 91-103. https://doi.org/10.30939/ijastech..1786379
AMA
1.Anh LV, Khoa NX, Vu NB. Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations. IJASTECH. 2026;10(1):91-103. doi:10.30939/ijastech.1786379
Chicago
Anh, Le Van, Nguyen Xuan Khoa, and Nguyen Ba Vu. 2026. “Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations”. International Journal of Automotive Science And Technology 10 (1): 91-103. https://doi.org/10.30939/ijastech. 1786379.
EndNote
Anh LV, Khoa NX, Vu NB (March 1, 2026) Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations. International Journal of Automotive Science And Technology 10 1 91–103.
IEEE
[1]L. V. Anh, N. X. Khoa, and N. B. Vu, “Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations”, IJASTECH, vol. 10, no. 1, pp. 91–103, Mar. 2026, doi: 10.30939/ijastech..1786379.
ISNAD
Anh, Le Van - Khoa, Nguyen Xuan - Vu, Nguyen Ba. “Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations”. International Journal of Automotive Science And Technology 10/1 (March 1, 2026): 91-103. https://doi.org/10.30939/ijastech. 1786379.
JAMA
1.Anh LV, Khoa NX, Vu NB. Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations. IJASTECH. 2026;10:91–103.
MLA
Anh, Le Van, et al. “Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations”. International Journal of Automotive Science And Technology, vol. 10, no. 1, Mar. 2026, pp. 91-103, doi:10.30939/ijastech. 1786379.
Vancouver
1.Le Van Anh, Nguyen Xuan Khoa, Nguyen Ba Vu. Vibration Analysis of an Automobile Using a Rigid Axle Moving on a Road Surface With Different Random Excitations. IJASTECH. 2026 Mar. 1;10(1):91-103. doi:10.30939/ijastech. 1786379


International Journal of Automotive Science and Technology (IJASTECH) is published by Society of Automotive Engineers Turkey

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