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Contact pressure and wear in sheet metal forming - an FEM analysis

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conference contribution
posted on 2006-01-01, 00:00 authored by Michael PereiraMichael Pereira, W Yan, Bernard RolfeBernard Rolfe
Wear is the principal cause of tool failure in most sheet metal forming processes. It is well known that the contact pressure between the blank and the tool has a large influence on the wear of the tool, and hence the tool life. This investigation utilises the finite element method to analyse the contact pressure distribution over the die radius for a particular deep drawing process. Furthermore, the evolution of the predicted contact pressure distribution throughout the entire stroke of the punch is also examined. It was found that the majority of the process shows a steady state pressure distribution, with two characteristic peaks over the die radius, at the beginning and end of the sheet contact area. Interestingly, the initial transient contact pressure response showed extremely high localised peak pressures; more than twice that of the steady state peaks. Results are compared to wear reported in the literature, during similar experimental deep drawing processes. Finally, the significance and effect of the results on wear and wear-testing techniques are discussed.

History

Event

International Conference and Exhibition on Structural Integrity and Failure (2006 : Sydney, Australia)

Pagination

73 - 77

Publisher

Materials Australia

Location

Sydney, Australia

Place of publication

[Sydney, N.S.W.]

Start date

2006-09-27

End date

2006-09-29

ISBN-13

9781876855260

ISBN-10

1876855266

Language

eng

Publication classification

E1 Full written paper - refereed; E Conference publication

Copyright notice

2006, Materials Australia

Editor/Contributor(s)

M Hoffman, J Price

Title of proceedings

SIF 2006 : Conference Proceedings of the International Conference and Exhibition on Structural Integrity and Failure

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