Mining Dump Truck Ride Analysis and Optimal Based on the Fluent
DONG zhijun1,GU zhengqi 1,2 , ZHANG sha1, TAO jian1,XU ya1
1.State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, HunanUniversity,Changsha410082； 2.Hunan University of Technology, Zhuzhou 412007
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.
2014, Vol. 33 
