| Issue |
J. Phys. IV France
Volume 134, August 2006
EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
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|---|---|---|
| Page(s) | 287 - 291 | |
| DOI | https://doi.org/10.1051/jp4:2006134044 | |
| Published online | 26 July 2006 | |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 287-291
DOI: 10.1051/jp4:2006134044
On the shear band spacing in stainless steel 304L
O. Oussouaddi1, L. Daridon2, A. Chrysochoos2 and S. Ahzi11 LMCS, Department of Physics, FSTE, University My Ismaïl, 54200 Errachidia, Morocco
2 LMGC-UMR CNRS 5508, University Montpellier II-CC 048, 34095 Montpellier, France
Published online: 26 July 2006
Abstract
In this work we present an analysis of the formation of
multiple adiabatic shear bands in stainless steel 304L. Using both
analytical criteria and numerical calculations, we analyze instability and
shear band spacing in simple shear problems such as under torsional loading
of a thin walled-tube. The Zerilli-Armstrong model which successfully
describes the deformation response of metals at high strain rates is used.
The perturbation approach associated with numerical methods is used to
determine the instability modes and their corresponding spacing. The shear
band spacing is computed using Molinari's postulate which suggests that the
wavelength of the dominant instability mode with the maximum growth rate at
a given time determines the minimum spacing between shear bands. The effect
of grain size on shear band spacing is discussed. We show that the variation
of the Taylor-Quinney parameter as a function of shear strain
is an important parameter that plays a significant role in the
calculation of the shear band spacing.
© EDP Sciences 2006