|
| Dynamical Properties of Variable-damped Vibration Isolator Based on Shear Thickening Fluid |
| Received:February 09, 2010 Revised:March 02, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2019.08.007 |
| KeyWord:shear thickening fluid nonlinear damper vibration isolation |
| Author | Institution |
| YU Mu-chun |
China Academy of Launch Vehicle Technology, Beijing , China |
| LI Bing-wei |
China Academy of Launch Vehicle Technology, Beijing , China |
| NIU Zhi-ling |
China Academy of Launch Vehicle Technology, Beijing , China |
| XUE Wei-kang |
China Academy of Launch Vehicle Technology, Beijing , China |
| ZHAO Peng |
State Key Laboratory of Mechanics and Control of Mechanical Structure, Nanjing University of Aeronautics and Astronautics, Nanjing , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective To research on a variable-damped isolator named shear thickening fluid (STF) vibration isolator. Methods Firstly, STF was prepared by dispersing nano-particles of silica into polyethylene glycol 200 fluid, followed by rheological properties test of shear thickening fluid. After that, an STF isolator was designed with STF as working medium. The vibration isolation system supported by STF isolator was modeled and the numerical simulation was conducted to study the vibration isolation properties of STF. And finally, the effect factors on vibrations isolation performance was researched quantitatively. Results STF isolator had small damping property under high vibration frequency. However, because of the shear thickening effect, it exhibited very strong damping at resonance frequency with the increase of shearing rate. So this special inherent character for STF vibration isolator was very effective for restraining resonance. Conclusion STF vibration isolator can effetely restrain resonance without bringing unfavorable effect at high frequency and effectively resolves the problem of traditional isolators. |
| Close |
|
|
|