Sheet EMF using convex punch instead of concave die

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Abstract

High speed and abscense of a precise control over pressure distribution confine sheet EMF into a die to simple shapes having shallow depth. It is possible to reach a higher depth by applying a convex punch instead of a concave die. In this article, sheet EMF on a punch and sheet EMF into a die have been investigated. The electromagnetic part of the study has been analytically investigated and the its mechanical part has been numerically studied using FEM in Abaqus software. In order to couple electromagnetic with mechanical parts, no-coupling method has been used. The obtained results have been verified by comparing the obtained results with previous experimental ones in literature. Al 1050 has been used in the present research. Rate-dependent and rate-independent hardening have been taken into consideration for the mechanical behavior for material. Using appropriate hardening model for material yields acceptable results. Moreover, a convex punch instead of a concave die is used to reach a higher depth in sheet EMF.

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References

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Journal of Solid and Fluid Mechanics
Volume 6, Issue 1
March and April 2016
Pages 29-42

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