| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Compression Enhanced Shear Yield Stress of Electrorheological Fluid |
ZHANG Min-Liang, TIAN Yu, JIANG Ji-Le, ZHU Xu-Li, MENG Yong-Gang, WEN
Shi-Zhu |
| State Key Laboratory of Tribology, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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ZHANG Min-Liang, TIAN Yu, JIANG Ji-Le et al 2009 Chin. Phys. Lett. 26 048301 |
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Abstract Shear tests of an electrorheological fluid with pre-applied electric field and compression along the field direction are carried out. The results show that pre-compressions can increase the shear yield stress up to ten times. Under the same external electric field strength, a higher compressive strain corresponds to a larger shear yield stress enhancement but with slight current density decrease, which shows that the particle interaction potentials are not increased by compressions but the compression-induced chain aggregation dominates the shear yield stress improvement. This pre-compression technique might be useful for developing high performance flexible ER or magnetorheological couplings.
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| Keywords:
83.80.Gv
82.70.Gg
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Received: 10 December 2008
Published: 25 March 2009
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| PACS: |
83.80.Gv
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(Electro- and magnetorheological fluids)
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82.70.Gg
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(Gels and sols)
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