Preprint Article Version 1 This version is not peer-reviewed

Experimental and Numerical Investigations into the Failure Mechanisms of TRIP700 Steel Sheets

Version 1 : Received: 12 October 2018 / Approved: 16 October 2018 / Online: 16 October 2018 (11:12:42 CEST)

How to cite: Habibi, N.; Sundararaghavan, V.; Prahl, U.; Ramazani, A. Experimental and Numerical Investigations into the Failure Mechanisms of TRIP700 Steel Sheets. Preprints 2018, 2018100353 (doi: 10.20944/preprints201810.0353.v1). Habibi, N.; Sundararaghavan, V.; Prahl, U.; Ramazani, A. Experimental and Numerical Investigations into the Failure Mechanisms of TRIP700 Steel Sheets. Preprints 2018, 2018100353 (doi: 10.20944/preprints201810.0353.v1).

Abstract

The formability and failure behavior of TRIP steel blanks were investigated through various stress states. The forming limit diagram (FLD) at fracture is constructed both experimentally and numerically. Numerical studies are performed to evaluate the applicability of different damage criteria in predicting the FLD as well as complex cross-die deep drawing process.  The fracture surface and numerical results revealed that the material failed in a different mode for different strain path. Therefore, Tresca model which is based on shear stress accurately predicted the conditions where shear had the profound effect on the damage initiation, whereas Situ localized necking criterion was able to calculate the conditions which localization was dominant.

Subject Areas

TRIP steel sheet; cross-die test; forming limit diagram; finite element analysis; failure mechanisms

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