Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Dynamic Characteristics of Semi-Active Shock Absorber Using Electrorheological Fluid

ER 유체를 이용한 반능동 완충장치의 동적 특성

  • Kim, Do-Hyung ;
  • Cho, Ki-Dae ;
  • Jung, Yong-Hyun ;
  • Lee, In ;
  • Oshima, Nobuo (Department of Intelligent Materials Engineering, Osaka City University) ;
  • Fukuda, Takehito (Department of Intelligent Materials Engineering, Osaka City University)
  • 김도형 (한국과학기술원 기계공학과 항공우주공학전공) ;
  • 조기대 (국방과학연구소) ;
  • 정용현 (고등기술연구원) ;
  • 이인 (한국과학기술원 기계공학과 항공우주공학전공) ;
  • ;
  • Published : 2001.07.01
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Abstract

Electrorheological(ER) fluid is a kind of smart material with variable shear stress and dynamic viscosity under various electric field intensity. Electric field can control the damping characteristics of ER damper. The objective of this study is the analysis of the performance of ER damper and its application to shock absorber. Idealized nonlinear Bingham plastic shear flow model is used to predict the velocity profile between electrodes. Cylindrical dashpot ER damper with moving electrode is constructed and tested under various electric fields. The analytic and experimental results for damping force are compared and discussed. Drop test system using ER damper is prepared to identify transient vibration characteristics. The rebound is eased as the applied electric field increases. When semi-active control algorithm is applied, rebound phenomenon disappears and vibration energy level decays faster than the case of zero electric field.

Keywords

References

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