Flow localization and shear band formation in a precipitation strengthened austenitic stainless steel

1982 ◽  
Vol 13 (7) ◽  
pp. 1263-1274 ◽  
Author(s):  
M. C. Mataya ◽  
M. J. Carr ◽  
G. Krauss
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Shear Band ◽  
Shear Band Formation ◽  
Flow Localization ◽  
Band Formation

Effects of Crystallographic Texture on Plastic Flow Localization

2007 ◽  
Vol 340-341 ◽  
pp. 211-216
Author(s):  
Mitsutoshi Kuroda
Keyword(s):  
Shear Band ◽  
Plane Strain ◽  
Plastic Flow ◽  
Texture Component ◽  
Three Dimensional ◽  
Cube Texture ◽  
Shear Band Formation ◽  
Flow Localization ◽  
Band Formation ◽  
Plastic Flow Localization

In this study, effects of typical texture components observed in rolled aluminum alloy sheets (i.e. Copper, Brass, S, Cube and Goss texture components) on plastic flow localization are studied. The material response is described by a generalized Taylor-type polycrystal model, in which each grain is characterized in terms of an elastic-viscoplastic continuum slip constitutive relation. First, forming limits of thin sheet set by sheet necking are predicted using a Marciniak–Kuczynski (M–K-) type approach. It is shown that only the Cube texture component yields forming limits higher than that for a random texture in the biaxial stretch range. Next, three-dimensional shear band analyses are performed, using a three-dimensional version of M–K-type model, but the overall deformation mode is restricted to a plane strain state. From this simple model analysis, two important quantities regarding shear band formation are obtained: i.e. the critical strain at the onset of shear banding and the corresponding orientation of shear band. It is concluded that the Cube texture component is said to be a shear band free texture, while some texture components exhibit significantly low resistance to shear band formation. Finally, shear band developments in plane strain pure bending of sheet specimens with the typical textures are studied.

The Phenomenon of Shear Strain Localization in Dynamic Viscoplasticity

1992 ◽  
Vol 45 (3S) ◽  
pp. S46-S61 ◽  
Author(s):  
T. G. Shawki
Keyword(s):  
Shear Band ◽  
Rate Sensitivity ◽  
Shear Band Formation ◽  
Viscoplastic Material ◽  
Flow Localization ◽  
Unified Framework ◽  
Band Formation ◽  
Shearing Deformation ◽  
Computational Procedures ◽  
The One

This article addresses shear flow localization during high rates of deformation of thermal viscoplastic materials. An overview of several efforts towards an improved understanding of shear band formation is given. This paper aims at extracting a unified framework towards the analysis of shear band formation for the considered class of deformations. For this purpose, we present a number of rigorous exact solutions for the one–dimensional simple shearing deformation of a general class of thermal viscoplastic material response. These solutions are used as benchmarks for the validation of both analytical and computational procedures. The interactive roles of inertia, rate–sensitivity, heat conduction, perturbation geometry, boundary conditions, thermal softening, strain hardening and constitutive description as regards the initiation and further intensification of flow localization are thoroughly addressed. We also examine the delicate questions concerning the notion of shear localization and the related mathematical characterization, length and time scales as well as the connection between localization and catastrophic failure.

scholarly journals Understanding and suppressing shear band formation in strut-based lattice structures manufactured by laser powder bed fusion

2021 ◽  
Vol 199 ◽  
pp. 109416
Author(s):  
Xiaoyang Liu ◽  
Takafumi Wada ◽  
Asuka Suzuki ◽  
Naoki Takata ◽  
Makoto Kobashi ◽  
...  
Keyword(s):  
Shear Band ◽  
Lattice Structures ◽  
Shear Band Formation ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Band Formation ◽  
Powder Bed

Studies of Elastic-Plastic Instabilities

1999 ◽  
Vol 66 (1) ◽  
pp. 3-9 ◽  
Author(s):  
V. Tvergaard
Keyword(s):  
Shear Band ◽  
Plastic Flow ◽  
Continuum Mechanics ◽  
Shear Band Formation ◽  
Band Formation ◽  
Elastic Plastic ◽  
Localized Necking ◽  
Focus On Results ◽  
Metal Sheets ◽  
Bifurcation Behavior

Analyses of plastic instabilities are reviewed, with focus on results in structural mechanics as well as continuum mechanics. First the basic theories for bifurcation and post-bifurcation behavior are briefly presented. Then, localization of plastic flow is discussed, including shear band formation in solids, localized necking in biaxially stretched metal sheets, and the analogous phenomenon of buckling localization in structures. Also some recent results for cavitation instabilities in elastic-plastic solids are reviewed.

Shear Band Formation in Fe–Cr–Mo–V–B–Si Amorphous Alloy under Nanoindentation

2004 ◽  
Vol 45 (3) ◽  
pp. 449-452
Author(s):  
M. N. Vereshchagin ◽  
S. N. Dub ◽  
V. G. Shepelevich ◽  
O. M. Ostrikov
Keyword(s):  
Amorphous Alloy ◽  
Shear Band ◽  
Shear Band Formation ◽  
Band Formation

Models For Shear Band Formation In Rolling And Extrusion

1979 ◽  
Vol 70 (7) ◽  
pp. 426-432
Author(s):  
Paul Van Houtte ◽  
Javier Gil Sevillano ◽  
Etienne Aernoudt
Keyword(s):  
Shear Band ◽  
Shear Band Formation ◽  
Band Formation
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