Crack Tip Mechanics in Distortion Gradient Plasticity

Sandra Fuentes-Alonso; Emilio Martínez Pañeda

Crack Tip Mechanics in Distortion Gradient Plasticity

Sandra Fuentes-Alonso, Emilio Martínez Pañeda

University of Oviedo

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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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 language	English
Title of host publication	Proceedings M2D2017 - 7th International Conference on Mechanics and Materials in Design
Editors	J.F. Silva Gomes, Shaker A. Meguid
Publisher	INEGI - Instituto De Ciência E Inovação Em Engenharia Mecânica E Engenharia Industrial
Publication date	2017
Pages	509-510
Article number	6770
ISBN (Electronic)	978-989-98832-7-7
Publication status	Published - 2017
Event	7th International Conference on Mechanics and Materials in Design - Albufeira (Algarve), Portugal Duration: 11 Jun 2017 → 15 Jun 2017

Conference

Conference	7th International Conference on Mechanics and Materials in Design
Country/Territory	Portugal
City	Albufeira (Algarve)
Period	11/06/2017 → 15/06/2017

Keywords

Distortion gradient plasticity
Fracture mechanics
Finite element method

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6770Final published version, 116 KB

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COFUNDPostdocDTU: COFUNDPostdocDTU
Præstrud, M. R. (Project Participant) & Brodersen, S. W. (Project Participant)
01/01/2014 → 31/12/2019
Project: Research

Cite this

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Fuentes-Alonso, S & Martínez Pañeda, E 2017, Crack Tip Mechanics in Distortion Gradient Plasticity. in JF Silva Gomes & SA Meguid (eds), Proceedings M2D2017 - 7th International Conference on Mechanics and Materials in Design., 6770, INEGI - Instituto De Ciência E Inovação Em Engenharia Mecânica E Engenharia Industrial, pp. 509-510, 7th International Conference on Mechanics and Materials in Design, Albufeira (Algarve), Portugal, 11/06/2017.

Crack Tip Mechanics in Distortion Gradient Plasticity. / Fuentes-Alonso, Sandra; Martínez Pañeda, Emilio.
Proceedings M2D2017 - 7th International Conference on Mechanics and Materials in Design. ed. / J.F. Silva Gomes; Shaker A. Meguid. INEGI - Instituto De Ciência E Inovação Em Engenharia Mecânica E Engenharia Industrial, 2017. p. 509-510 6770.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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AB - 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.

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Crack Tip Mechanics in Distortion Gradient Plasticity

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Conference

Keywords

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COFUNDPostdocDTU: COFUNDPostdocDTU

Cite this