Abstract:Tire force information is the basis of research on vehicle dynamics control system and vehicle reliability, and the most effective means for tire force testing is force-measuring wheel sensor (i.e. force-measuring wheel). At present, the research on force-measuring wheel mainly focused on elastomer components, and in view of the significant influence of tire on the motion characteristics of vehicle, the whole force-measuring wheel, including elastomer and rubber tire body was modeled and tested. Firstly, the structure of force-measuring wheel was introduced in detail. Besides, the method of modeling tire carcass and the method of dealing with contact problems between components were clarified, and a finite element model of the force-measuring wheel prototype (meridian tire 195/65R15) was established. Then, based on the tire stiffness machine, the bench test of vertical working condition, lateral working condition and longitudinal working condition of force-measuring wheel prototype was carried out. Finally, the finite element simulation analysis of force-measuring wheel under three working conditions were executed. The comparative analysis of test and simulation results showed that the maximum absolute values of the relative error of strain values of each measuring point under the three working condition were 4.86%, 3.92% and 3.15%, which indicated that the modeling method determined was feasible, and the model can accurately reflect the wheel force under steadystate conditions. The rubber carcass and elastomer as a whole were studied, which laid a foundation for the decoupling optimization of the multi-dimensional force structure of force-measuring wheel.