Computational modelling of brittle failure in polycrystalline materials using cohesive-frictional grain-boundary elements

Ivano Benedetti, Benedetti, Aliabadi

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1 Citazioni (Scopus)

Abstract

A 3D grain-level formulation for the study of brittle failure in polycrystallinemicrostructures is presented. The microstructure is represented as a Voronoi tessellation and theboundary element method is used to model each crystal of the aggregate. The continuity of theaggregate is enforced through suitable conditions at the intergranular interfaces. The grain-boundarymodel takes into account the onset and evolution of damage by means of an irreversible linearcohesive law, able to address mixed-mode failure conditions. Upon interface failure, a non-linearfrictional contact analysis is introduced for addressing the contact between micro-crack surfaces. Anincremental-iterative algorithm is used for tracking the micro-degradation and cracking evolution. Anumerical test shows the capability of the formulation.
Lingua originaleEnglish
Titolo della pubblicazione ospiteAdvances in Fracture and Damage Mechanics XII
Pagine233-236
Numero di pagine4
Stato di pubblicazionePublished - 2014

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.2500.2500???
  • Mechanics of Materials
  • Mechanical Engineering

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