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A Study of Ride Analysis of Medium Trucks with Varying the Characteristics of Suspension Design Parameters
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English
Abstract
Ride quality of medium truck became a very important factor in the suspension design, due to the demand of more comfortable ride of passengers. This study describes how to determine and evaluate design parameters related to the chassis suspension system with time and frequency analysis. The spring stiffness and damping force of the chassis suspension system were obtained by observing the vertical acceleration PSD. The simulation was carried out on various road profiles, which was suggested by ISO. The pitching motion of the medium size truck was observed to improve the ride quality. A computer simulated truck model was constructed using DADS, a commercial dynamic analysis software, in order to simulate the truck motions. From the result of the sensitivity analysis of suspension parameters, it was concluded that the spring and the shock absorbers affect the pitching of the vehicle. In order to validate the computer simulated truck model, a physical prototype was constructed and tested.
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Citation
Lee, H., Lee, G., Kim, T., and Ahn, C., "A Study of Ride Analysis of Medium Trucks with Varying the Characteristics of Suspension Design Parameters," SAE Technical Paper 973230, 1997, https://doi.org/10.4271/973230.Also In
References
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- DADS User Manual Computer Aided Design Software, Inc. Oakdale, IA, U.S.A. 1993
- Kim K. S. Yoo W. S. “Generation of Road surface profiles with a Power Spectral Density function.” KSAE No. 97370015 1997
- FUKUSHIMA Naoto “Optimum Characteristics of Automotive Shock Absorbers under Various Driving Condition and Road Surface” JSAE Review March 1983