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Determination of asperity damage parameters for constitutive models of rock discontinuities
Author(s) -
Plesha Michael E.,
Hutson Robert W.,
Dowding Charles H.
Publication year - 1991
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.1610150406
Subject(s) - asperity (geotechnical engineering) , classification of discontinuities , dilatant , joint (building) , geotechnical engineering , constitutive equation , geology , forensic engineering , structural engineering , engineering , finite element method , mathematics , mathematical analysis
Dilatancy and contact surface damage are important phenomena affecting the behaviour of rock joints and other geological discontinuities. Effective constitutive laws that incorporate these behaviours have recently been developed but require the specification of new material parameters that govern damage of asperity surfaces. Determination of the parameters that control damage is currently a difficulty that confronts practitioners. This brief will summarize the findings of Hutson and Dowding's investigation of joint surface asperity degradation and elaborate on the implications for application.