Effect of road profile on heavy vehicles with air suspension. (27th December 2006)

• Record Type: Journal Article
• Authors: Gonzalez, Oscar M.; Jauregui, Juan C.; Lozano, Alejandro; Herrera, Gilberto
• Is Part Of: International journal of heavy vehicle systems. Volume 14:Number 1(2007)
• Page Start: 98
• Page End: 110
• Publication Date: 2006-12-27
• Subjects: air suspension -- road profile -- road roughness -- rollover threshold -- heavy vehicles -- dynamic modelling; Motor vehicles -- Design and construction -- Periodicals; Commercial vehicles -- Design and construction -- Periodicals; Motor vehicles -- Design and construction; Periodicals; 629.224
• Languages: English
• ISSNs: 1744-232X

Abstract

This study presents a seven degree of freedom, dynamic model for a two-axle vehicle which is used to analyse the influence of road profile on the vehicle's rollover capabilities and ride characteristics. Non-linear elements are included due to the air suspension featured in the vehicle. Road roughness is represented as a Power Spectral Density (PSD) function acting as an exciting force on the unsprung masses of the seven degree of freedom model, and solved numerically for both rollover simulation and lane change manoeuvre. Results indicate that road surface does have a significant impact on a vehicle's performance since it may prompt the vehicle to flip over below its rollover threshold.