Vibration Suppression Using Eddy Current Damper

와전류 감쇠기를 이용한 진동 억제

  • 곽문규 (동국대학교 기계공학과) ;
  • 이명일 (동국대학교 기계공학과 대학원) ;
  • 허석 (동국대학교 산업기술연구원)
  • Published : 2003.05.01


This paper is concerned with the eddy current damper which can be used to enhance the damping of the host structure. The operating principle of the eddy current damper is first explained in detail. The dynamic interaction between the magnets and the copper plate produces eddy current thus resulting in the damping force. By attaching the eddy current damper to the host structure, the damping of the total structure can be increased so that vibrations can be suppressed. The advantage of the eddy current damper is that it doesn't require any electronic devices and power supply. The effect of the eddy current damper on the global dynamic characteristics of the structure is investigated by considering the cantilever with the eddy current damper. Experimental results show that the eddy current damper is an effective device for vibration suppression.