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The combined plastic and discrete fracture deformation framework for finite‐discrete element methodsRougier, Esteban; Munjiza, Antonio; Lei, Zhou; Chau, Viet Tuan; Knight, Earl Eugene; Hunter, Abigail; Srinivasan, Gowri
International journal for numerical methods in engineering, 15 March 2020, Letnik: 121, Številka: 5Journal Article
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.
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