Simulation Analysis of Multiaxial Heavy Vehicle Dynamic Load Characteristics under Bilateral Tracks’ Road Excitation
Liu Xiangyin Chen Yang Gao Pan Liu Dawei
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College of Mechanical & Electronic Engineering Qingdao University,Qingdao 266071
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Received
Revised
Published
2014-11-11
2015-01-13
2015-07-15
Issue Date
2015-07-15
Abstract
In order to study the dynamic load characteristics of multiaxial heavy vehicle under bilateral tracks’ road excitation，the random road surface in spatial domain was simulated through harmonic superposition method of rational function power spectral density(PSD), and a rigid-flexible coupling virtual prototype vehicle was established. Then a ride dynamic model of multiaxial heavy vehicle under bilateral tracks’ spatial domain road excitation was established, and the vehicle tire normal force and tire normal dynamic load coefficient were computed. Simulation results indicated that, comparing with the single tracks’ road excitation, the value and change law of normal forces on the both sides of each axle’s tires under bilateral tracks’ road excitation were not the same, and maximum value of tire normal force appeared in a different location; The value and change law of normal dynamic load coefficient of each axies’s tires were completely different in different driving speeds，the front-mid axles’ tire normal dynamic load coefficient was minimum, the mid-rear and rear axles’ tire normal dynamic load coefficients were maximum. The research results could provide the basis for the calculation of vehicle tire dynamic load and verification of dynamic response of road surface.
Liu Xiangyin Chen Yang Gao Pan Liu Dawei.
Simulation Analysis of Multiaxial Heavy Vehicle Dynamic Load Characteristics under Bilateral Tracks’ Road Excitation[J]. Journal of Vibration and Shock, 2015, 34(13): 48-52
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