Three-Dimensional Failure Criteria Based on the Hoek–Brown Criterion

Abstract

List of symbols mb Hoek–Brown material constant s Hoek–Brown material constant a Hoek–Brown material constant Co Uniaxial compressive strength I0 1 First invariant of the effective stress tensor r1 Major principal effective stress r2 Intermediate principal effective stress r3 Minor principal effective stress soct Octahedral shear stress r1hb Major principal effective stress at failure for the 2D Hoek–Brown criterion r3hb Minor principal effective stress at failure for the 2D Hoek–Brown criterion a Simplified Priest material constant b Simplified Priest material constant w Simplified Priest material constant