| A disc-type magneto-rheologic fluid damper |
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| 作者姓名： | 祝长生 |
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| 作者单位： | College of |
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| 基金项目： | supportedpartiallybytheECBRITEEURAMprogramunderBRPRCT970544IMPACTprojectandStateKeyLaboratoryofVibrationShockandNoiseShanghaiJiaotongUniversity |
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| 摘 要： | INTRODUCTIONElectro rheological (ER ) Magneto rheologi cal(MR)fluidisakindofcontrollablefluidwhoserheologicalproperties,especiallyapparentviscosity,canbedramaticallyandreversiblyvariedinafewmillisecondsbytheapplicationofanexternalelectrical magneticfield…
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A disc-type magneto-rheologic fluid damper |
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| ZHU Chang-sheng.A disc-type magneto-rheologic fluid damper[J].Journal of Zhejiang University Science,2003(5). |
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| Authors: | ZHU Chang-sheng |
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| Abstract: | A disc-type magneto-rheological fluid damper operating in shear mod e is proposed in this paper,which is based on the special characteristics of the magneto-rheological (MR) fluid with rapid,reversible and dramatic change in it s rheological properties by the application of an external magnetic field. The ma gnetic field of the disc-type MR fluid damper is analysed by the finite element method; the controllability of the disc-type MR fluid damper on the dynamic beh a viour of a rotor system; and the effectiveness of the disc-type MR fluid damper in controlling the vibration of a rotor system,are studied in a flexible rotor system with an over-hung disc. It is shown that the magnetic flux density of th e disc-type MR fluid damper in the working areas can significantly change with t h e applied current in the coil; and that the dynamic behavior of the disc-type M R fluid damper can be varied by the application of an external magnetic field pr oduced by a low voltage electromagnetic coil. The disc-type MR fluid damper can significantly change the dynamic characteristics of a rotor system,provided tha t the location of the disk-type MR fluid damper is carefully chosen. The disc- ty pe MR fluid damper is a new actuator with good dynamic characteristics for rotat ing machinery. |
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| Keywords: | Magneto-rheological fluid Damper Rotordynamics Vibr ation Active vibration control |
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