Analysis Of Articulated Vehicle Steering Stability Characteristics

Articulated engineering vehicles, Including loader、scraper、yarding and soon. which had the advantages of small steering radius, good steeringmaneuverability, were mainly used in mining, energy utilization, engineeringconstruction and other fields. Because of the articulated vehicle body wereconnected through the longitudinal pin, the loader body structure was irregular,and it was extremely occurred tilting in the process. Typical articulated wheelloader tilting accident were taken place in the slope and more complex pavement,and under the condition of high speed transport at a sharp turn. The study foundthat the better stability of articulated vehicle can not only ensure the personalsafety of operators but also can effectively reduce the instability of articulatedvehicle in complex terrain road, It was can driving and operating on the premiseof not too much to reduce the loader speed, thus the production efficiency wereimproved.This article mainly aims at the steering stability of articulated wheel loaderwhich were related with the theory of analysis and experimental simulation.First of all, on the basis of the research status on the stability of articulatedvehicles at home and abroad, according to the static stability theory ofarticulated vehicles, the article analysis that the stability of static transverse onelevel and secondary in the process of steering, while the loader driving on aslope; And then to model the tire deformation under static and dynamiccoordinate system, to the vertical force and position of the center of gravity ofthe tire was carried out to solve, in addition, according to the mechanical systemdynamics, a suitable loader steering dynamic model of slope was established.the vehicle system dynamics equation was to solve by MATLAB; Secondly toSolidworks model of loader, through x_t format to lead the ADAMS/View, addback material properties and constraints, write the right tires and the road file,finally completed the establishment of the virtual prototype; Finally to thevirtual prototype model simulation results and dynamic model simulation resultswere compared, Verify the correctness of the model. Through the loader dynamics simulation, the effect on the stability at the different speeds, steeringAngle, and the slope Angle of steering were analyzed; According to thearticulated vehicle roll stability evaluation index, the article selected the lateralacceleration, roll Angle, the center of gravity displacement, lateral load transferrate (LTR), and other parameters on the dynamic stability of the loader carriedon the analysis and evaluation, which provided data and analysis method ofcertain reference value for the articulated engineering vehicle steering stabilityanalysis.