Identification of Post-Necking Hardening Behaviour of Sheet Metal: a Practical Application to Clinch Forming

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Clinching is a mechanical joining technique which involves severe local plastic deformation of two or more sheet metal parts resulting in a permanent mechanical interlock or joint. The required forming load and energy can be determined with the aid of the finite element method. However, a good knowledge of the elasto-plastic properties is of utmost importance to perform a sufficiently accurate simulation. This paper presents two alternative material tests to identify the hardening behaviour of sheet metal beyond the point of maximum uniform elongation. In addition, the material tests were applied to DC05 and the identified material behaviour is evaluated through the prediction of the forming load during clinching.

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Edited by:

J.R. Duflou, R. Clarke, M. Merklein, F. Micari, B. Shirvani and K. Kellens

Pages:

251-258

DOI:

10.4028/www.scientific.net/KEM.473.251

Citation:

S. Coppieters et al., "Identification of Post-Necking Hardening Behaviour of Sheet Metal: a Practical Application to Clinch Forming", Key Engineering Materials, Vol. 473, pp. 251-258, 2011

Online since:

March 2011

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$38.00

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