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Tribological behavior in micro-sheet hydroforming

Journal Article


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Abstract


  • In this paper, the tribological behavior and its size effects in micro-hydromechanical deep drawing (MHDD) are theoretically and experimentally investigated. It is found that a required fluid pressure for hydrodynamic lubrication significantly increases with scaling down micro-scale due to a high sealablity at small relative punch diameter to minimum thickness. Moreover, the opposite tribological size effect from a conventional microforming appears in MHDD in which the fluid medium can be kept in open lubricant pockets (OLPs) by applying a fluid pressure and, the friction coefficient decreases as a specimen size decreases. Thus, MHDD can induce the hydrodynamic lubrication and lubrication in OLPs and improve the tribological behavior in microforming by applying the appropriate fluid pressure.

UOW Authors


  •   Sato, Hideki (external author)
  •   Manabe, Kenichi (external author)
  •   Wei, Dongbin (external author)
  •   Jiang, Zhengyi
  •   Alexandrov, Sergei (external author)

Publication Date


  • 2016

Citation


  • Sato, H., Manabe, K., Wei, D., Jiang, Z. & Alexandrov, S. (2016). Tribological behavior in micro-sheet hydroforming. Tribology International, 97 302-312.

Scopus Eid


  • 2-s2.0-84957946114

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6166&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5139

Number Of Pages


  • 10

Start Page


  • 302

End Page


  • 312

Volume


  • 97

Abstract


  • In this paper, the tribological behavior and its size effects in micro-hydromechanical deep drawing (MHDD) are theoretically and experimentally investigated. It is found that a required fluid pressure for hydrodynamic lubrication significantly increases with scaling down micro-scale due to a high sealablity at small relative punch diameter to minimum thickness. Moreover, the opposite tribological size effect from a conventional microforming appears in MHDD in which the fluid medium can be kept in open lubricant pockets (OLPs) by applying a fluid pressure and, the friction coefficient decreases as a specimen size decreases. Thus, MHDD can induce the hydrodynamic lubrication and lubrication in OLPs and improve the tribological behavior in microforming by applying the appropriate fluid pressure.

UOW Authors


  •   Sato, Hideki (external author)
  •   Manabe, Kenichi (external author)
  •   Wei, Dongbin (external author)
  •   Jiang, Zhengyi
  •   Alexandrov, Sergei (external author)

Publication Date


  • 2016

Citation


  • Sato, H., Manabe, K., Wei, D., Jiang, Z. & Alexandrov, S. (2016). Tribological behavior in micro-sheet hydroforming. Tribology International, 97 302-312.

Scopus Eid


  • 2-s2.0-84957946114

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6166&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5139

Number Of Pages


  • 10

Start Page


  • 302

End Page


  • 312

Volume


  • 97