Research on loaded brake performance test of trucks
by Wanyou Huang; Yanyan Fan; Mingjin Yu
International Journal of Heavy Vehicle Systems (IJHVS), Vol. 27, No. 5, 2020

Abstract: In this paper, the axle load model of three-axle truck upon lift loading is built, and the calculation model of vehicle centroid position is created as well. The effectiveness of the axle load model is verified by real vehicle test with a three-axle heavy duty van. The maximum relative error between model calculation results and real test values is 3.17%, which indicates that the axle load model is valid. Based on the axle load model, analysis is conducted to get impact laws of lifted height, wheelbase, centroid position and composite stiffness on the lift loaded axle load, which provides a basis for the vehicle braking performance test. According to the results of real vehicle tests, the maximum braking force of the first, second and third axles is increased by 30.6%, 73.3% and 5% after respective axle is lift loaded.

Online publication date: Tue, 17-Nov-2020

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