Sensitivity Analysis of Chassis System to Improve Shimmy and Brake Judder Vibration on Steering Wheel 960734
In chassis system vibrations, steering wheel vibrations such as shimmy, brake judder, high speed shake, and idle shake are partially affected by the vibrational characteristics of exciting sources, the suspension/steering system, and body structure.
For the analysis of shimmy and brake judder vibration of the steering wheel, vector functions of exciting forces and transfer forces are classified for the vibrational mode shape analysis of the suspension system. The typical motions of a suspension system due to the kinematics and compliance stiffness are also investigated.
In this paper, the sensitivity analysis of chassis system is suggested to reduce shimmy and judder vibration using vibration analysis of suspension elements. The DADS program is used with user defined routines for the descriptions of specific test conditions in sensitivity analysis and predictions of the vibration characteristics of a suspension system.