TY - JOUR
T1 - A modified cohesive damage-plasticity model for distinct lattice spring model on rock fracturing
AU - Wei, Xin-Dong
AU - Nguyen, Nhu H.T.
AU - Bui, Ha H.
AU - Zhao, Gao-Feng
N1 - Funding Information:
This research are financially supported by the National Key R&D Program of China (Grant No. 2018YFC0406800 ) and National Natural Science Foundation of China (Grant No. 11772221 ).
Publisher Copyright:
© 2021
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/7
Y1 - 2021/7
N2 - In this study, a modified cohesive damage-plasticity model (m-CDPM) is developed for a distinct lattice spring model (DLSM) to simulate the damage evolution and fracture process in quasi-brittle materials. A hyper-elastic segment is introduced into the original CDPM to enable the DLSM to handle special cases associated with negative or vanishing shear stiffness in the DLSM framework when attempting to link micro- and macro-constitutive parameters. Relationships between the macro experimental parameters and their micro counterparts are theoretically derived following the tradition of the DLSM with consideration of the particle size effect. The correctness and feasibility of the proposed model are verified through numerical examples and a comparison with available experimental or numerical solutions.
AB - In this study, a modified cohesive damage-plasticity model (m-CDPM) is developed for a distinct lattice spring model (DLSM) to simulate the damage evolution and fracture process in quasi-brittle materials. A hyper-elastic segment is introduced into the original CDPM to enable the DLSM to handle special cases associated with negative or vanishing shear stiffness in the DLSM framework when attempting to link micro- and macro-constitutive parameters. Relationships between the macro experimental parameters and their micro counterparts are theoretically derived following the tradition of the DLSM with consideration of the particle size effect. The correctness and feasibility of the proposed model are verified through numerical examples and a comparison with available experimental or numerical solutions.
KW - Cohesive damage-plasticity model
KW - Distinct lattice spring model
KW - Hyper-elastic segment
KW - Particle size effect
UR - http://www.scopus.com/inward/record.url?scp=85103755657&partnerID=8YFLogxK
U2 - 10.1016/j.compgeo.2021.104152
DO - 10.1016/j.compgeo.2021.104152
M3 - Article
AN - SCOPUS:85103755657
SN - 0266-352X
VL - 135
JO - Computers and Geotechnics
JF - Computers and Geotechnics
M1 - 104152
ER -