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Non-linear analysis of shear band formation in sand

✍ Scribed by Wu, Wei

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 258 KB
Volume: 24
Category: Article
ISSN: 0363-9061
DOI: 10.1002/(sici)1096-9853(200003)24:3<245::aid-nag52>3.0.co;2-c

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✦ Synopsis

The paper investigates the incipience of shear band with an incrementally non-linear constitutive equation. Necessary conditions for the emergence of shear band are derived. The lower bound solution is obtained by taking the strain rate inside and outside the shear band into consideration. Numerical results of localized bifurcation for general stress and strain are presented and compared with experiments. In the principal stress space, the stresses at the onset of shear band form a surface, which is partially enclosed by the failure surface for homogeneous straining. The signi"cance of the analysis for identi"cation of the material parameters and veri"cation of the constitutive model against experiments is discussed.

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