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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2007도 추계학술대회 강연 및 논문 초록집
발행연도
2007.10
수록면
162 - 166 (5page)

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초록· 키워드

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To decrease vibration and noise in washing machine, lubricated friction dampers were installed. Although the structure of the friction damper is simple, the dynamic behavior of the lubrication damper was not easy to develop a mathematical model. To see the dynamic behavior of a friction damper, physical tests were carried out via a material testing machine by changing exciting amplitudes and frequencies. Complicated curves of spring characteristics and damping showed a hysteretic behavior.
In this paper, a reasonable model for a friction damper was suggested. To model the hysteretic behavior of a friction damper, a Coulomb friction model was first applied. To get a refined model for stick and transition, a STV (stick transition velocity) model was analyzed. To develop a more accurate mathematical model, a MSTV (modified stick transition velocity) model was proposed. In the MSTV model, the friction force could be changed due to the velocity of the damper, and the damping force was calculated according to the relative velocity between the external displacement and the deformation of the sponge in the friction damper. The MSTV model was in a good agreement to the experimental results.

목차

Abstract
1. Introduction
2. Real Tests of Friction Damper
3. Conventional Modeling of Friction Damper
4. Development of MSTV Model
5. Conclusions
References

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