| The heavy-duty dual front axle steering vehicle plays an increasingly important role in thelogistics industry which is rapidly developing. But there is still some of the performance of thevehicle to be improved because of the multi-axis steering technology is not researched perfectly.This paper first introduced the research status of such problems both in domestic andforeign countries, and summed up the previous research experience and results. Then analyzedthe problem of the abnormally severe abrasion of tires on dual front axle steering vehicle for thesubject, and determined to optimize the parameters of dual front axle steering system. In order tobuild accurate model of dual front axle steering mechanism in ADAMS,3D handheld scannerwas used to scan the two steering axis, steering mechanism, suspension and tires. Then a reverseprocess was done to get the3D model. With reference to part of the drawings ofcomponents and parts, the hard point coordinates of the dual front axle steering mechanism wasdetermined. Subsequently, a dynamic model was established in ADAMS/View using the hardpoint coordinates and the simulation of the model was done. After that the model wasparameterized, and determined six variables which more largely affected the tires’ abrasion byusing the analysis method of sensitivity. Finally, the design of experiments (DOE) was done, andthe response surface methodology (RSM) was used to optimize the dual front axle steeringmechanism in ADAMS/Insight. Comparing the difference between the actual rotational angleand the ideal rotational angle with the one before optimization, the results showed the differencewas effectively controlled so as to lower the abrasion of tires.In order to facilitate the designers, a program with Chinese interface was developed usingthe re-development function of ADAMS for the special use of the parameters optimization ofdual front axle steering mechanism so as to improve the work efficiency effectively and shortenthe product design cycle. |
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