Contact pressure evolution at the die radius in sheet metal stamping

Pereira, Michael P., Duncan, John L., Yan, Wenyi and Rolfe, Bernard F. 2009, Contact pressure evolution at the die radius in sheet metal stamping, Journal of materials processing technology, vol. 209, no. 7, pp. 3532-3541.

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Title Contact pressure evolution at the die radius in sheet metal stamping
Author(s) Pereira, Michael P.
Duncan, John L.
Yan, Wenyi
Rolfe, Bernard F.
Journal name Journal of materials processing technology
Volume number 209
Issue number 7
Start page 3532
End page 3541
Total pages 10
Publisher Elsevier B.V.
Place of publication Aedermannsdorf, Switzerland
Publication date 2009-04-01
ISSN 0924-0136
1873-4774
Keyword(s) contact pressure
sheet metal stamping
tool wear
bending-under-tension
Summary The contact conditions at the die radius are of primary importance to the wear response for many sheet metal forming processes. In particular, a detailed understanding of the contact pressure at the wearing interface is essential for the application of representative wear tests, the use of wear resistant materials and coatings, the development of suitable wear models, and for the ultimate goal of predicting tool life. However, there is a lack of information concerning the time-dependant nature of the contact pressure response in sheet metal stamping. This work provides a qualitative description of the evolution and distribution of contact pressure at the die radius for a typical channel forming process. Through an analysis of the deformation conditions, contact phenomena and underlying mechanics, it was identified that three distinct phases exist. Significantly, the initial and intermediate stages resulted in severe and localised contact conditions, with contact pressures significantly greater than the blank material yield strength. The final phase corresponds to a larger contact area, with steady and smaller contact pressures. The proposed contact pressure behaviour was compared to other results available in the literature and also discussed with respect to tool wear.
Language eng
Field of Research 091003 Machine Tools
091006 Manufacturing Processes and Technologies (excl Textiles)
Socio Economic Objective 861205 Sheet Metal Products
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2009
Copyright notice ©2008, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30021786

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
School of Engineering
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Created: Fri, 15 Jan 2010, 16:07:57 EST by Michael Pereira

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