Publication detail

Flow behaviour in compression test under various lubrication conditions

ŠEBEK, F. ZAPLETAL, J. KUBÍK, P. PETRUŠKA, J.

Original Title

Flow behaviour in compression test under various lubrication conditions

English Title

Flow behaviour in compression test under various lubrication conditions

Type

conference paper

Language

en

Original Abstract

The compression test provides a useful information about the material flow under large plastic deformations, when compared to the standard tensile test. On the other hand, it is heavily dependent on the lubrication conditions. The paper deals with two different specimen geometries resulting in two different friction conditions. The first geometry corresponds to the classical smooth cylinder. The second one was designed according to the idea of Rastegaev. It is a smooth cylinder with grooves on both faces (bases), which allow the lubricant to accumulate and prevent it from escaping the region, where the punches are in the contact with specimen. Then, both cases were computationally simulated and compared with experiments.

English abstract

The compression test provides a useful information about the material flow under large plastic deformations, when compared to the standard tensile test. On the other hand, it is heavily dependent on the lubrication conditions. The paper deals with two different specimen geometries resulting in two different friction conditions. The first geometry corresponds to the classical smooth cylinder. The second one was designed according to the idea of Rastegaev. It is a smooth cylinder with grooves on both faces (bases), which allow the lubricant to accumulate and prevent it from escaping the region, where the punches are in the contact with specimen. Then, both cases were computationally simulated and compared with experiments.

Keywords

Upsetting test; Friction; Equivalent stress; Negative stress triaxiality; Punch

Released

13.05.2019

ISBN

978-80-87012-71-0

Book

Engineering Mechanics 2019

Pages from

351

Pages to

354

Pages count

4

BibTex


@inproceedings{BUT157134,
  author="František {Šebek} and Josef {Zapletal} and Petr {Kubík} and Jindřich {Petruška}",
  title="Flow behaviour in compression test under various lubrication conditions",
  annote="The compression test provides a useful information about the material flow under large plastic deformations, when compared to the standard tensile test. On the other hand, it is heavily dependent on the lubrication conditions. The paper deals with two different specimen geometries resulting in two different friction conditions. The first geometry corresponds to the classical smooth cylinder. The second one was designed according to the idea of Rastegaev. It is a smooth cylinder with grooves on both faces (bases), which allow the lubricant to accumulate and prevent it from escaping the region, where the punches are in the contact with specimen. Then, both cases were computationally simulated and compared with experiments.",
  booktitle="Engineering Mechanics 2019",
  chapter="157134",
  doi="10.21495/71-0-351",
  howpublished="print",
  year="2019",
  month="may",
  pages="351--354",
  type="conference paper"
}