Assessment of test data for selection of 3-D failure criterion for sand

Data from three‐dimensional experiments performed on sand in true triaxial equipment have been reviewed to sort out apparent disarray resulting from their interpretation. This has been done based on analyses made possible by recent developments and understanding of factors influencing sand behaviour...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:International journal for numerical and analytical methods in geomechanics Jg. 30; H. 4; S. 307 - 333
1. Verfasser: Lade, Poul V.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Chichester, UK John Wiley & Sons, Ltd 10.04.2006
Wiley
Schlagworte:
Applied sciences
Buildings. Public works
cross-anisotropy
Exact sciences and technology
failure criterion
Geotechnics
sand
shear banding
shear strength
Soil investigations. Testing
true triaxial tests
failure criterion
Sand
Stability
Stress strain relation
cross-anisotropy
true triaxial tests
Shear strength
Triaxial test
Experimental study
Three dimensional model
Experimental result
shear banding
Anisotropy
Failure analysis
Soil test
Slenderness ratio
Numerical simulation
Shear band
ISSN:0363-9061, 1096-9853
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Data from three‐dimensional experiments performed on sand in true triaxial equipment have been reviewed to sort out apparent disarray resulting from their interpretation. This has been done based on analyses made possible by recent developments and understanding of factors influencing sand behaviour: occurrence of shear banding, boundary conditions and/or specimen slenderness ratio, cross‐anisotropy, and stability of experimental technique. These factors are reviewed and test data from the literature are evaluated. Experimental data are divided into three groups in which: (a) homogeneous behaviour controls the sand strength; (b) shear banding affects the shape of the three‐dimensional failure surface in the midrange of values of b=(σ2−σ3)/(σ1−σ3), and (c) the data has been misinterpreted. Appropriate interpretation of three‐dimensional strength data for sand exhibiting isotropic, homogeneous behaviour is represented by a smoothly rounded triangular failure surface expressible in terms of the first and third stress invariants. Shear banding effects will cause the failure surface to be ‘indented’ in the midrange of b‐values in all sectors of the octahedral plane. Effects of cross‐anisotropy will result in lower strengths in sector III than in sector I of the octahedral plane, and the failure surface will appear as rotated around the stress origin in principal stress space. Copyright © 2005 John Wiley & Sons, Ltd.
Bibliographie:ark:/67375/WNG-CP6W9RQZ-X
ArticleID:NAG471
istex:EC638B148CF4166CF38D11290AE708F16D70A9AE
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0363-9061
1096-9853
DOI:10.1002/nag.471