Evaluation of Road Damage Based on Full Heavy Vehicle Multi-body Dynamic Model

LIU Da-wei[];CHEN Huan-ming[];LIU Wei[];JIANG Rong-chao[]

Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (4) : 92-96.

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Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (4) : 92-96.
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Evaluation of Road Damage Based on Full Heavy Vehicle Multi-body Dynamic Model

  • LIU Da-wei[1];CHEN Huan-ming[1];LIU Wei[2];JIANG Rong-chao[1]

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Abstract

In order to study the extent of road damage, two detailed multi-body dynamic models of the 6×4 and 8×4 heavy trucks were established by using SIMPACK software. When these trucks with different load states and speeds driving on grade B road, the changes in the law of the vehicle dynamic tyre load coefficient and vertical tyre force were analyzed. The road damage factor based on 95 percentage fourth power aggregate force was used as the criterion for road damage due to dynamic load of heavy truck. Simulation results indicated that, when the loading weights of the same, the vehicle dynamic tyre load coefficient and vertical tyre force increased with the increase of vehicle speed. when the vehicle speeds of the same, the vehicle dynamic tyre load coefficient decreased with the increase of loading weight, but the situation of vertical tyre force was the opposite. The front axle’s vehicle dynamic tyre load coefficient was more than the middle and the rear axles’, but the front axle’s vertical tyre force was less than the middle and the rear axles’. Compared with the 6×4 truck, when driving on grade B road with different load states and speeds, the 8×4 truck could reduce the road damage factor by 14.64%~19.01%. With the use of 8×4 heavy truck, not only to improve the transport efficiency and reduce transport costs, but also reduce the heavy vehicles on the road conditions and the extent of the injury.

Key words

heavy vehicle / road damage / virtual prototype technology / multi-body system dynamics / vehicle dynamic tyre loads

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LIU Da-wei[];CHEN Huan-ming[];LIU Wei[];JIANG Rong-chao[]. Evaluation of Road Damage Based on Full Heavy Vehicle Multi-body Dynamic Model[J]. Journal of Vibration and Shock, 2010, 29(4): 92-96
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