2014 Fiscal Year Final Research Report
Development of an Adaptively Tuned Dynamic Vibration Absorber using Magnetorheological Elastomer
| Project/Area Number |
24560256
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | Kanazawa University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
IWATA Yoshio 金沢大学, 機械工学系, 教授 (90115212)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 機能性材料 / 磁気粘弾性エラストマ / 動吸振器 / 振動制御 / 制振装置 |
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| Outline of Final Research Achievements |
A passive type dynamic vibration absorber offers advantages in reliability and simple constitution, however, the use of the absorber with fixed property is usually limited to harmonically excited case, where the damper is only effective for pre-determined narrow frequency range. Design of the damper following well-known optimal tuning theory could extend the effective frequency range, yet the damping performance remains at a certain amount.
In this study, the stiffness controllable elastomer composite known as Magnetorheological elastomer (MRE) is applied to the dynamic absorber along with stiffness switching scheme, where the natural frequency of the absorber is tuned in real time by the external magnetic field. Investigations show that the vibration of the structure can be fully reduced by the proposed dynamic absorber with variable stiffness functionality.
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| Free Research Field |
振動工学
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