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New Analysis Technology for Automotive Chassis Sensitivity of Steering Wheel Vibrations Induced by Tire-Wheel Imbalance or Brake Torque Fluctuation

Article of Honda R&D Technical Review Vol.20 No.2


A simulation model for analyzing vehicle chassis sensitivity for the vibrations caused by tire-wheel imbalance and brake torque fluctuation has been developed. Nonlinear elements, such as detailed steering power assist system, frictions and nonlinear bushings are taken into consideration. The simulation model is extensively correlated with laboratory excitation tests in both frequency and time domain. The model is then used to analyze the mechanism of chassis sensitivity, and as a result, contributing chassis vibration modes and influential chassis factors are identified. The analysis results are further correlated with vehicle on-road tests with specification changes in critical factors. Reliable correlation between simulated and measured trends is achieved.


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