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. In order to understand the calculating difference between the multi-body rigid model and the flexible-rigid coupled model, especially the influence of the high frequency vibration caused by the wheel our-of-roundness(OOR) on sperling index and vibration acceleration response for standard wheel, polygon wheel and flat wheel are calculated and compared using the two models. The results show that the use of flexible-rigid coupled model not only inherits the achievement of the multi-body rigid model, but also to make up for the deficiency of multi-body rigid model in the study and can more accurately simulate the OOR wear caused by high frequency vibration on vehicle dynamic performance influence.

Analysis of Vehicle Sperling Index Compared with the Flexible-rigid Coupled Model and Multi-body Rigid Model