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Modeling of contact pressure in sheet metal forming

journal contribution
posted on 2007-01-01, 00:00 authored by Michael PereiraMichael Pereira, W Yan, Bernard RolfeBernard Rolfe
For a given sheet metal forming process, an accurate determination of the contact pressure distribution experienced is an essential step towards the estimation of tool life. This investigation utilizes finite element (FE) analysis to determine the evolution and distribution of contact pressure over the die radius, throughout the duration of a channel forming process. It was found that a typical two-peak steady-state contact pressure response exists for the majority of the process. However, this was preceded by a transient  response, which produced extremely large and localized contact pressures. Notably, it was found that the peak transient contact pressure was more than double the steady-state peak. These contact pressure results may have a significant influence on the tool wear response and therefore impact current wear testing and prediction techniques. Hence, an investigation into the validity of the predicted contact pressure was conducted.

History

Journal

Materials Science Forum

Volume

561

Issue

565

Pagination

1975 - 1978

Publisher

Trans Tech Publications Ltd

Location

Aedermannsdorf, Switzerland

ISSN

0255-5476

Language

eng

Notes

Book title: PRICM 6

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2007, Trans Tech Publications

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