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Title: A note on the Lade- Duncan failure criterion
Authors: Yang, XQ
Fung, WH
Au, SK
Cheng, YM 
Keywords: Lade- Duncan failure criterion
Ridge function
Friction angle
Stress tensor invariant
Deviatoric stress tensor invariant
Issue Date: 2006
Publisher: Taylor & Francis
Source: Geomechanics and geoengineering, 2006, v. 1, no. 4, p. 299-304 How to cite?
Journal: Geomechanics and geoengineering 
Abstract: The non-linear relationship between the internal frictional angle φ and the first stress tensor invariant I [sub 1] , together with the cohesion c of geomaterial, is used to show that the Lade–Duncan failure criterion is a more general failure criterion with a deep physical meaning. It can be used to describe the strength failure characteristics of sand and normally consolidated soil mass as well as those of cemented geomaterials. As demonstrated for φ[sub e]≥φ[sub c] on planes, the Lade–Duncan failure criterion reveals the basic mechanical deformation characteristics for geomaterials. The test results for red sandstone indicate that the differences between the internal frictional angles in the triaxial extension and compression states on planes π will be reduced as the average principal stress increases.
ISSN: 1748-6025
EISSN: 1748-6033
DOI: 10.1080/17486020600970797
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