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Study on flow distribution inside integrated hybrid actuator

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Abstract

A piezoelectric-based hydraulic actuator is a type of piston-cylinder device which is operated by internal flow energy. Recently, an artificial muscle and a micro actuator have been developed using a new smart material and internal flow control. Thus, the actuating velocity of the fabricated integrated hybrid system was investigated using the pumping frequency and load weight. The actuating velocity was then calculated using a developed program, and the numerical result was compared with the experimental result to validate the numerical program. Also, the internal flow rate was measured to analyze the pump efficiency experimentally. The flow rate inside the integrated hybrid actuator calculated using a CFD program for various pumping frequencies was then compared with the experimental results. The maximum outlet velocity was obtained at the pumping frequency of 35 Hz and the velocity decreased from that point due to flow loss.

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Authors and Affiliations

  1. School of Mechanical Engineering, Sungkyunkwan University, Suwon, 440-746, Korea

    Jin Ho Cho & Han Seo Ko

  2. Department of Advanced Technology Fusion, Konkuk University, Seoul, 143-701, Korea

    Nam Seo Goo & Zhefeng Xuan

  3. Agency for Defense Development, Daejeon, Korea

    Ki Won Yoon

Authors
  1. Jin Ho Cho
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  2. Nam Seo Goo
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  3. Zhefeng Xuan
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  4. Ki Won Yoon
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  5. Han Seo Ko
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Correspondence to Han Seo Ko.

Additional information

Recommended by Associate Editor Simon Song

Han Seo Ko is a Professor in the School of Mechanical Engineering, Sungkyunkwan University. He received his Ph.D. in Mechanical Engineering in 1998 from Texas A&M University. His research interests are flow control, microfluidics, optical tomography, micro-droplet ejection and heat and mass control.

Jin Ho Cho is a graduate student in the School of Mechanical Engineering, Sungkyunkwan University. His research interests are computational fluid dynamics (CFD) in mechanical system, flow visualization technique, micro fludics and numerical heat transfer.

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Cho, J.H., Goo, N.S., Xuan, Z. et al. Study on flow distribution inside integrated hybrid actuator. J Mech Sci Technol 28, 3583–3588 (2014). https://doi.org/10.1007/s12206-014-0819-6

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  • DOI: https://doi.org/10.1007/s12206-014-0819-6

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