The purpose of this study is to determine the stiffness of rubber of dynamic damper. This damper system reduces the steering wheel vibration caused by idling oscillation of the engine. Therefore, in order to measure the stiffness of the silicone rubber in the dynamic damper system, the material test of the silicone rubber was carried out. Using the measured stiffness, the FEM model of the dynamic damper system was constructed and the correlation by the experimental data was shown at an error of less than 2%. In addition, the dynamic damper system was simplified to a two-degree-of-freedom spring-mass model and the effect of the stiffness change of the rubber on the natural frequency of the column shaft was analyzed theoretically. As a result, the amplitude of the column shaft was reduced as the stiffness of the silicone rubber was lowered.

1. 서 론
 2. VMQ 실리콘 고무 물성시험 및 해석
  2.1 다이나믹 댐퍼 시스템
  2.2 VMQ 실리콘 고무 물성 특성 시험
  2.3 충격망치시험 및 모달해석
 3. 다이나믹 댐퍼 파라메터 스터디
  3.1 다이나믹 댐퍼 시스템 이론 모델
  3.2 VMQ silicon rubber의 강성 파라메터 스터디
 4. 결 론
 후 기
 References

• 남재현(Kongju national university) | Jae-Hyeon Nam
• 박기완(Kongju national university) | Ki-Wan Park
• 강재영(Kongju national University) | Jae-Young Kang Corresponding Author