Parametric study of rider’s comfort in a vehicle with semi-active suspension system under transient road conditions

Authors

  • Arinola Bola Ajayi Department of Mechanical Engineering, University of Lagos, Lagos, Nigeria
  • Ediketin Ojogho Department of Aerospace Engineering, Lagos State University, Ojo, Lagos, Nigeria
  • Surajudeen Adedotun Adewusi Mechanical Engineering Department, Jubail University College, Saudi Arabia
  • Sunday Joshua Ojolo Department of Mechanical Engineering, University of Lagos, Lagos, Nigeria
  • Julio Cesar Costa Campos Federal University of Viçosa, Brazil https://orcid.org/0000-0002-9488-8164
  • Antonio Marcos de Oliveira Siqueira Federal University of Viçosa, Brazil https://orcid.org/0000-0001-9334-0394

DOI:

https://doi.org/10.18540/jcecvl9iss5pp15287-01e

Keywords:

Frequency spectrum. Ride discomfort. Semi-active suspensions. Transient road condition. Vehicle parameters. Vibration dose value.

Abstract

Considering that many Nigerian roads are untarred, the effect of frequent plying of these untarred roads on passengers and the expected performance of suspension system of vehicles are important for health and safety reasons. This is significant because the transmission of vibration associated with suspension systems are dependent on the frequency spectrum of the road input, and the nature of the suspension system and the vehicle seating arrangement that is producing the vibration. Thus, this study focuses on the discomfort experienced by passengers based on parametric study of vehicle with semi-active suspension system under transient road conditions.  The modeling of the of semi-active vehicle suspension system properties are contrived on the mass- spring damper system for 4 degree-of–freedom half- car model integrated with 3 degrees of freedom human-seat arrangement. Using vehicle parameters, the severity of ride discomfort experienced by the passenger as the vehicle traversed transient road conditions (i.e., traversing obstruction) was evaluated in terms of the vibration dose value (VDV). Results of simulation based on the parametric studies are presented and the vibration dose values evaluated to show the dependence of vehicle ride comfort on the characteristics of the various elements of the vehicle suspension such as stiffness and damping characteristics. The result showed that the variation of sprung mass and suspension stiffness of the vehicle had more significant effects on passenger discomfort than the variation of the unsprung mass. The parametric study also revealed that suspension stiffness affects the suspension working space as the vehicle traversed transient road condition.

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Published

2023-01-20

How to Cite

Ajayi, A. B., Ojogho, E., Adewusi, S. A., Ojolo, S. J., Campos, J. C. C., & Siqueira, A. M. de O. (2023). Parametric study of rider’s comfort in a vehicle with semi-active suspension system under transient road conditions. The Journal of Engineering and Exact Sciences, 9(5), 15287–01e. https://doi.org/10.18540/jcecvl9iss5pp15287-01e

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Section

General Articles

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