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Parameter identification in a damage model for rock mechanics
Author(s) -
Resende L.,
Martin J. B.
Publication year - 1988
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610120106
Subject(s) - damage mechanics , finite element method , brittleness , rock mechanics , constitutive equation , softening , geotechnical engineering , geology , identification (biology) , deformation (meteorology) , structural engineering , engineering , materials science , composite material , oceanography , botany , biology
Attention is focused on the mechanical behaviour of rock‐like materials. Developments and applications of a constitutive model based on damage theory are presented. The internal damage model is calibrated for a hard brittle rock, Bushveld Norite, and through this process the identification of the material parameters is carried out. Emphasis is placed on the identification of the material parameters in the damage evolution law. The uniqueness of solutions in the softening regime is investigated through finite element mesh sensitivity studies of non‐uniform deformation triaxial compression tests.