A note on the lade–duncan failure criterion

X. Q. Yang, W. H. Fung, S. K. Au, Yung Ming Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


The non-linear relationship between the internal frictional angle (Formula presented.) and the first stress tensor invariant (Formula presented.), 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 (Formula presented.) on (Formula presented.) 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 (Formula presented.) planes will be reduced as the average principal stress increases.
Original languageEnglish
Pages (from-to)299-304
Number of pages6
JournalGeomechanics and Geoengineering
Issue number4
Publication statusPublished - 1 Jan 2006


  • Deviatoric stress tensor invariant
  • Friction angle
  • Lade–Duncan failure criterion
  • Ridge function
  • Stress tensor invariant

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology


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