The University of Southampton
University of Southampton Institutional Repository

The influence of rounded edges on indentation by a flat punch

The influence of rounded edges on indentation by a flat punch
The influence of rounded edges on indentation by a flat punch
The contact problem and stress state for indentation by a flat punch with rounded edges is studied. For the contact problem itself analytical solutions are obtained for both surface pressure and interior stress fields. Cases of normal indentation and frictional contact, the latter in both sliding or partial slip conditions, are all treated.
The transition from the Hertzian configuration to the contact between a nominally flat pad and contacting flat surface is discussed, and it is found that the strength of the contact decays surprisingly slowly. Regarding the von Mises yield parameter, there is a range of configurations for which the strength is actually higher than the Hertzian one, and the strength decays only when the corner radii are very small. The present solution is therefore a realistic alternative to the classical rigid-flat punch idealization, and has particular application to fretting fatigue tests.
contact stresses, flat punch, fretting fatigue pads
0954-4062
319-327
Ciavarella, M.
d5aa6350-b3d4-4a78-a670-9d78242f58c5
Hills, D.A.
d7ac6eb1-a16e-4a2c-b3ff-86e82cfbf3d6
Monno, G.
2ed35922-2947-46b7-9633-9cfd1c9fbe07
Ciavarella, M.
d5aa6350-b3d4-4a78-a670-9d78242f58c5
Hills, D.A.
d7ac6eb1-a16e-4a2c-b3ff-86e82cfbf3d6
Monno, G.
2ed35922-2947-46b7-9633-9cfd1c9fbe07

Ciavarella, M., Hills, D.A. and Monno, G. (1998) The influence of rounded edges on indentation by a flat punch. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 212 (4), 319-327. (doi:10.1243/0954406981521259).

Record type: Article

Abstract

The contact problem and stress state for indentation by a flat punch with rounded edges is studied. For the contact problem itself analytical solutions are obtained for both surface pressure and interior stress fields. Cases of normal indentation and frictional contact, the latter in both sliding or partial slip conditions, are all treated.
The transition from the Hertzian configuration to the contact between a nominally flat pad and contacting flat surface is discussed, and it is found that the strength of the contact decays surprisingly slowly. Regarding the von Mises yield parameter, there is a range of configurations for which the strength is actually higher than the Hertzian one, and the strength decays only when the corner radii are very small. The present solution is therefore a realistic alternative to the classical rigid-flat punch idealization, and has particular application to fretting fatigue tests.

Text
Ciav_98c.pdf - Accepted Manuscript
Download (1MB)

More information

Published date: 1998
Keywords: contact stresses, flat punch, fretting fatigue pads

Identifiers

Local EPrints ID: 23245
URI: http://eprints.soton.ac.uk/id/eprint/23245
ISSN: 0954-4062
PURE UUID: 69510363-9b04-49dc-8acb-9ad8ff094c30

Catalogue record

Date deposited: 15 Feb 2007
Last modified: 15 Mar 2024 06:45

Export record

Altmetrics

Contributors

Author: M. Ciavarella
Author: D.A. Hills
Author: G. Monno

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×