Mining Dump Truck Ride Analysis and Optimal Based on the Fluent

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Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (15) : 206-211.

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Mining Dump Truck Ride Analysis and Optimal Based on the Fluent

DONG zhijun1,GU zhengqi 1,2 , ZHANG sha1, TAO jian1,XU ya1

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Abstract

The road condition of mining dump truck is complicated, which affect the vehicle ride seriously. Suspension is a major part of the vehicle ride, this paper simulates the internal flow field of hydro-pneumatic suspension under the tensile and compression condition, the stiffness and damping are calculated after then. Meanwhile, the vehicle dynamic model of eight degrees of freedom is established in Matlab/Simulink, the required mechanical properties of the suspension applied to the simulation of the vehicle ride. From the comparison between the simulation results and experimental data, the maximum error of the seat vertical acceleration is 9.72%, which the accuracy of the model is proved. At last, the physical parameters of the hydro-pneumatic suspension by genetic algorithm is optimized, the root mean square of the seat vertical acceleration reduced by 21.43% after optimization, the dump truck’s ride comfort is improved obviously.

Key words

hydro-pneumatic suspension / Fluent / genetic algorithm / ride comfort / mining dump truck

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DONG zhijun;GU zhengqi;;ZHANG sha;TAO jian;XU ya. Mining Dump Truck Ride Analysis and Optimal Based on the Fluent[J]. Journal of Vibration and Shock, 2014, 33(15): 206-211