Publication detail

THE INFLUENCE OFTHE STRAIN RATE ON THE VALUE OF FRICTION COEFFICIENT

SVOBODA, P. JOPEK, M.

English title

THE INFLUENCE OFTHE STRAIN RATE ON THE VALUE OF FRICTION COEFFICIENT

Type

journal article in Web of Science

Language

en

Original abstract

The Male and Cockroft ring compression test stands as one of the methods utilized to determine the coefficient of friction in forming processes. This approach eliminates the need for force measurement. This study presents the outcomes of the Male and Cockroft ring compression test conducted on Hardox 450 material at varying strain rates, conducted without lubricant. The experiments were carried out using a ZD-40 hydraulic press, CFA-80 pneumatic die hammer and split Hopkinson pressure bar test at the Faculty of Mechanical Engineering of Brno University of Technology. The test results were documented on a calibration diagram, revealing a significant influence of strain rate on the coefficient of friction. Specifically, the findings indicate that as the strain rate increases, the coefficient of friction decreases.

English abstract

The Male and Cockroft ring compression test stands as one of the methods utilized to determine the coefficient of friction in forming processes. This approach eliminates the need for force measurement. This study presents the outcomes of the Male and Cockroft ring compression test conducted on Hardox 450 material at varying strain rates, conducted without lubricant. The experiments were carried out using a ZD-40 hydraulic press, CFA-80 pneumatic die hammer and split Hopkinson pressure bar test at the Faculty of Mechanical Engineering of Brno University of Technology. The test results were documented on a calibration diagram, revealing a significant influence of strain rate on the coefficient of friction. Specifically, the findings indicate that as the strain rate increases, the coefficient of friction decreases.

Keywords in English

strain rate; friction; ring compression test; Hardox 450 steel; split Hopkinson pressure bar test

Released

11.12.2024

Publisher

MM SCIENCE

Location

PRAGUE 10

ISSN

1805-0476

Volume

2024

Number

5

Pages from–to

7824–7828

Pages count

5

BIBTEX


@article{BUT191350,
  author="Petr {Svoboda} and Miroslav {Jopek},
  title="THE INFLUENCE OFTHE STRAIN RATE ON THE VALUE OF FRICTION COEFFICIENT",
  year="2024",
  volume="2024",
  number="5",
  month="December",
  pages="7824--7828",
  publisher="MM SCIENCE",
  address="PRAGUE 10",
  issn="1805-0476"
}