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논문 기본 정보

자료유형
학술대회자료
저자정보
김영춘 (두산중공업) 김경웅 (한국과학기술원)
저널정보
한국트라이볼로지학회 한국트라이볼로지학회 학술대회 한국윤활학회 학술대회 제37권
발행연도
2003.11
수록면
229 - 234 (6page)

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As electrorheological fluid(ER fluid) has a characteristic that apparent viscosity varies when electric field applied, so rheological characteristic(yield stress & viscosity) changes in proportion to the electric field applied and the response time is very short within a few miliseconds. In case of using ER fluid for journal bearing as lubricant, it is estimated that it's possible to realize very effective journal bearing system that is not complicate and has a very quick response time. It is necessary to examine the influence of rheological characteristic that varies with electric field applied on bearing characteristic to apply ER fluid to journal bearing, however there are few studies for about that. As for the journal bearing, it comes under high shear flow mode that has shear rate range of 10³ ~10⁴ s?¹ because rotational speed is very high and clearance is small. But most of the studies for about ER fluid issued until now is about the range of 10~10² s?¹. So, there are a lot of difficulties to understand the characteristic of high shear flow mode and furthermore it is restricted to make an experiment for about the characteristic of ER fluid because of the limitation of experimental equipment. The equipment was prepared to make an experiment for high shear flow mode that has the range of 10³ ~10⁴ s?¹ using ER fluid that is composed of silicon oil with dispersed particle of starch. Using the above system, the fluid characteristic of ER fluid was studied.

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ABSTRACT
1. 서론
2. ER 유체의 특성
3. 실험
4. 결론
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