| 제목 |
자동차 루프의 진동제어를 위한 제진재의 위치 및 두께에 대한 실험적 연구 |
| 분야 |
진동ㆍ소음 |
| 언어 |
Korean |
| 저자 |
이정균(국민대학교), 사종성(서일대학), 김찬묵(국민대학교) |
| Key Words |
Automotive roof(자동차 루프), Vibration characteristics(진동 특성), Loss factor(손실계수), Damping material(제진재), Passive vibration control(수동진동제어), Constrained layer damping(구속 감쇠층) |
| 초록 |
This paper presents an experimental study on vibration characteristics of an automotive roof with damping material. The goal of the study is to extract modal parameters (natural frequency, loss factor, and mode shape) of automotive roof with damping materials treatment. To determine the effective positions and thickness of the damping material on a roof, vibration tests have been carried out for six cases; an aluminum plate with damping material on maximum strain energy positions, and an aluminum plate with damping material on nodal lines. From the result of aluminum plate, it is found that the damping material should be placed on the location with maximum strain energy part. For the automotive roof, patches of constrained damping material, which has two different density, have been attached to the positions of the maximum strain energy with four kinds of thicknesses. This paper shows that the proper positioning of the damping material is very important and the effective thickness is about twice that of the roof panel. |
| 원문(PDF) |
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