From Brittle to Ductile Fracture in Disordered Materials

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2010
Major/Subject
Mcode
Degree programme
Language
en
Pages
155502/1-4
Series
Physical Review Letters, Volume 105, Issue 15
Abstract
We introduce a lattice model able to describe damage and yielding in heterogeneous materials ranging from brittle to ductile ones. Ductile fracture surfaces, obtained when the system breaks once the strain is completely localized, are shown to correspond to minimum energy surfaces. The similarity of the resulting fracture paths to the limits of brittle fracture or minimum energy surfaces is quantified. The model exhibits a smooth transition from brittleness to ductility. The dynamics of yielding exhibits avalanches with a power-law distribution.
Description
Keywords
lattice models, heterogeneous materials, brittle fractures, ductile fractures
Other note
Citation
Picallo, Clara B. & López, Juan M. & Zapperi, Stefano & Alava, Mikko J. 2010. From Brittle to Ductile Fracture in Disordered Materials. Physical Review Letters. Volume 105, Issue 15. 155502/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.105.155502.