Abstract
Ride comfort improvement based on dynamic characteristic analysis is investigated. An entire dynamic model of a typical heavy truck is developed in order to obtain further investigation. The effects of sensitive mode shapes pitch around rear axle, bounce, pitch around front axle and cab resonance on vibration transmissibility from wheel to cab base are observed. The influence of leaf spring stiffness at front and rear axles on important mode shapes has been presented. Appropriate stiffness adjustment is suggested to improve ride comfort level, and the research flow can be also used for any other vehicle design.
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