J. Phys. IV France 110 (2003) 453
Analysis of the dynamic plane shear test of sheet metals at large strainsR. Merle1, H. Zhao1 and A. Awade2
1 LMT, ENS-Cachan, CNRS, University Paris 6, 61 avenue du Président Wilson, 94235 Cachan cedex, France
2 Technocentre Renault, 1 avenue du Golf, 78288 Guyancourt cedex, France
This paper presents a shearing experiment of sheet metals in order to obtain experimental data at large strain and at high strain rates. Previous studies in the domain were more focused at the shearing loading and cliterion aspect so that they looked more at the smalt strain range. Our interest in this kind of test is in the large strain range so that the analysis of the test may be quite different. For this plii-pose, the local measuremelit of strain field by means of the image corrélation method is used to evaluate the strain homogeneity and deviation from the pure shear condition whcn thc nominat shear becomes more and more important. Nnmencal simulations (under ls-dyna) are also made to study the stress state and its homogeneity in large shear of sheet metals.
© EDP Sciences 2003