LI Ying-jie, ZHANG Ding-li, LIU Bao-guo. Development and verification of strain-softening model considering deformation modulus degradation in FLAC3D[J]. 2011, 32(S2).
LI Ying-jie, ZHANG Ding-li, LIU Bao-guo. Development and verification of strain-softening model considering deformation modulus degradation in FLAC3D[J]. 2011, 32(S2).DOI:
The strain-softening constitutive model in the fast Lagrangian analysis of continua in three dimensions(FLAC3D) implemented by shear strength parameters degrading and neglecting the influences of deformation-modulus degradation. For this case
based on the damage constitutive model of deformation modulus degradation
the difference scheme is deduced in detail; and the flow diagram of the model in FLAC3D as well as the secondary developed degradation damage constitutive model in FLAC3D with VC++ environment are studied. Compared with a numerical solutions from deep circular tunnel strain-softening model
elastoplastic and damage mechanical characters are further verified; and the influence of deformation modulus degradation on the deformation behaviours of surrounding rockmasses is analyzed. Because the characteristics of the damage and degradtion and the large deformation of the surrounding rockmasses can be reflected by this constitutive model