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The combined plastic and discrete fracture deformation framework for finite‐discrete element methods
Author(s) -
Rougier Esteban,
Munjiza Antonio,
Lei Zhou,
Chau Viet Tuan,
Knight Earl Eugene,
Hunter Abigail,
Srinivasan Gowri
Publication year - 2019
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.6255
Subject(s) - plasticity , finite element method , deformation (meteorology) , discrete element method , fracture (geology) , materials science , geology , structural engineering , geotechnical engineering , mechanics , composite material , engineering , physics
Summary The combined finite‐discrete element method (FDEM) was originally developed for fracture and fragmentation of brittle materials, more specifically for cementitious and rock‐like materials. In this work, a combination of a discrete crack and plastic deformation has been combined and applied to FDEM simulation of fracture. The deformation is described using a FDEM‐specific mechanistic approach with plastic deformation being formulated in material embedded coordinate systems leading to multiplicative decomposition and plastic flow, that is, resolved in stretch space; this is combined with the FDEM fracture and fragmentation criteria. The result and main novelty of the present work is a robust framework for simulation of large strain solid deformation combined with a multiplicative decomposition‐based model that simultaneously involves elasticity, plasticity, and fracture.