Crack Tip Mechanics in Distortion Gradient Plasticity

Sandra Fuentes-Alonso, Emilio Martínez Pañeda

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Abstract

The important role of geometrically necessary dislocations in structural integrity assessment has encouraged an extensive use of strain gradient plasticity theories to characterize the behavior at the small scales involved in crack tip deformation. However, despite the popularity of Distortion Gradient Plasticity (DGP), the influence on crack tip mechanics of DGP's distinguishing features that entail superior modelling capabilities has not been investigated yet. In this work crack tip fields are thoroughly examined by implementing the higher order theory of DGP in an implicit finite element framework. The implications on fracture and damage modeling are extensively discussed.
Original languageEnglish
Title of host publicationProceedings M2D2017 - 7th International Conference on Mechanics and Materials in Design
EditorsJ.F. Silva Gomes, Shaker A. Meguid
PublisherINEGI - Instituto De Ciência E Inovação Em Engenharia Mecânica E Engenharia Industrial
Publication date2017
Pages509-510
Article number6770
ISBN (Electronic)978-989-98832-7-7
Publication statusPublished - 2017
Event7th International Conference on Mechanics and Materials in Design - Albufeira (Algarve), Portugal
Duration: 11 Jun 201715 Jun 2017

Conference

Conference7th International Conference on Mechanics and Materials in Design
CountryPortugal
CityAlbufeira (Algarve)
Period11/06/201715/06/2017

Keywords

  • Distortion gradient plasticity
  • Fracture mechanics
  • Finite element method

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