Development of Virtual Vibration Simulator to Evaluate Effects of Structural Modification for Bodily Sensation

The virtual vibration simulator using a part of the system is utilized to experience the vibration for bodily sensation under actual operating condition. In order to evaluate the effects of structural modification on the virtual vibration simulator, a new method is so developed as to predict the modified system frequency response function based on the hybrid component of the part and FE model for modification part together with the component of the rest of system. After being verified by simple structure, the method is applied to a steering of truck to generate the vibration under operating condition before and after structural modification, which is realized by three exciters.