시트백의 진동 특성 분석을 위한 기어의 회전 강성 측정

Abstract

The whole-body vibration in the vehicle may cause discomfort and risk to health to the passenger. The seat back composed of frames and gears is an important part to transmit the vibration caused by the road condition to one. The seat back is simply represented as a vibrating beam having boundary conditions, rotational spring and free-end. The gear connecting seat back to cushion is modeled as rotational complex stiffness. The beam transfer function method is used to analyze the effect of the rotational complex stiffness of the gear on dynamic characteristic of the seat back. An experimental method to determine the dynamic properties of gear is proposed. The properties are calculated comparing the measured transfer function with the predicted one.