A Study on the Influence of Strut Insulator Aging on Vehicle Noise

스트러트 인슐레이터 열화가 차량 소음에 미치는 영향에 관한 연구

  • Son, Seong-Hyun (School of Mechanical Engineeraing, Pusan National University) ;
  • Kang, Sung-Su (School of Mechanical Engineeraing, Pusan National University) ;
  • Kim, Gug-Yong (School of Mechanical Engineeraing, Pusan National University) ;
  • Park, Soon-Cheol (Durability & Reliability Team, Hyundai Motors Co. Ltd.)
  • Received : 2010.10.18
  • Accepted : 2010.12.07
  • Published : 2010.12.31

Abstract

Strut insulator in a vehicle is an important part to prevent noise and vibration which is created for driving on the road. Most of the viscoelastic-mounts are made of rubber and natural rubber is the key ingredient. These rubber products show well performance for the initial time, but they will degrade after they are exposed to a high temperature circumstance and a cyclic load. NVH performance and comfort in a vehicle were decreased by these degradation of the rubber. In this study, spring displacement in a vehicle was measured to make a profile in the simulation test performed with an acceleration sensor. In addition, acceleration level, rubber permanent deformation and hardness of the rubber were measured according to drive distance and vehicle model.

차량에서 스트러트 인슐레이터는 도로노면으로부터 발생하는 소음과 진동을 방지하는 역할을 한다. 대부분의 점탄성 마운트들은 고무로 되어있으며 천연고무가 주성분이다. 이러한 고무 부품들은 초기에는 제 역할을 하지만 오랜 시간 고온과 반복하중에 노출되면 성능저하가 일어난다. 고무성능 변화는 NVH를 떨어뜨리고 승차감을 저하시킨다. 본 연구에서는 차량실험을 통해 스프링 변위를 측정하였고, 재현실험에서 가속도 센서를 이용하여 운행거리와 차량연식에 따른 인슐레이터 고무성능을 가속도 값, 고무 영구 변형량, 경도를 나타내었다.

Keywords

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