Thermal and strain rate softening in Al-Mg sheet during necking and shear band formation

1987 ◽  
Vol 18 (6) ◽  
pp. 1154-1156 ◽  
Author(s):  
J. M. Carlson ◽  
J. E. Bird
Keyword(s):  
Shear Band ◽  
Strain Rate ◽  
Shear Band Formation ◽  
Band Formation

A Mechanism for Shear Band Formation in the High Strain-Rate Torsion Test

1990 ◽  
Vol 57 (4) ◽  
pp. 836-844 ◽  
Author(s):  
Timothy J. Burns
Keyword(s):  
Shear Band ◽  
High Strain Rate ◽  
Strain Rate ◽  
Plastic Flow ◽  
Moving Boundary ◽  
High Strain ◽  
Numerical Study ◽  
Torsion Test ◽  
Shear Band Formation ◽  
Band Formation

A numerical study of a one-dimensional model of the high strain-rate torsion test shows that a moving boundary of rigid unloading, starting from the ends of the thin-walled tubular specimen, is a plausible mechanism for adiabatic shear band formation during the test. Even though the dimensionless thermal diffusivity parameter is very small, the moving boundary is due to heat transfer from the specimen through its ends, which are assumed to be isothermal heat sinks. The mathematical model is based on a physical model of thermoelastic-plastic flow and a phenomenological Arrhenius model for the plastic flow surface. The numerical technique used is the semi-discretization method of lines.

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
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