Publication detail
Flow behaviour in compression test under various lubrication conditions
ŠEBEK, F. ZAPLETAL, J. KUBÍK, P. PETRUŠKA, J.
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 in English
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–to
351–354
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",
booktitle="Engineering Mechanics 2019",
year="2019",
month="May",
pages="351--354",
isbn="978-80-87012-71-0"
}