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- Title
Micromechanics modelling of ductile fracture in tensile specimens using computational cells.
- Authors
DOS SANTOS, F. F.; RUGGIERI, C.
- Abstract
ABSTRACT This study extends the computational cell framework to model ductile fracture behaviour in tensile specimens. In the computational cell model, ductile damage occurs through void growth and coalescence (by cell extinction) within a thin layer of material located well inside the fracture process zone for the ductile process. Laboratory testing of a high strength structural steel provides the experimental stress–strain data for round bar and circumferentially notched tensile specimens to calibrate the cell model parameters for the material. Numerical simulations employing the micromechanics model reproduce the essential features of the ductile behaviour for the tensile specimens, including the development of intense necking and void growth in the centre of the specimen cross section. The resulting methodology enables the detailed study of ductile failure in small-scale tensile specimens.
- Subjects
TENSILE architecture; FRACTURE mechanics
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2003, Vol 26, Issue 2, p173
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1046/j.1460-2695.2003.00619.x