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Regularization of damage and failure using a non-local hardening variable in an Eulerian formulation of inelasticity
Linnaeus University, Faculty of Technology, Department of Mechanical Engineering.
Technion Israeel Institute of Technology, Israel.
2023 (English)In: 15th International Conference on Fracture (ICF15)June 11-16, 2023 Atlanta, GA USA, 2023Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

It is known that damage or inelastic softening can cause an ill-posed problem leading to localization and mesh-dependence in finite element simulations. Here, a nonlocal hardening variable is introduced in a finite deformation Eulerian formulation of inelasticity. This nonlocal variable is defined over an Eulerian region of nonlocality, which is a sphere with radius equal to a characteristic length, defined in the current deformed geometry of the material. The influence of the nonlocal hardening variable is studied using an example of a plate that is loaded by a prescribed boundary displacement causing formation of a shear band. Predictions of the applied load vs. displacement curves and contour plots of the total distortional deformation of the plate and the hardening variable are studied. It is shown that the characteristic material length controls the structure of the shear band developed in the plate.

Place, publisher, year, edition, pages
2023.
National Category
Mechanical Engineering
Research subject
Technology (byts ev till Engineering), Mechanical Engineering
Identifiers
URN: urn:nbn:se:lnu:diva-127836OAI: oai:DiVA.org:lnu-127836DiVA, id: diva2:1838688
Conference
15th International Conference on Fracture (ICF15) June 11-16, 2023 Atlanta, GA USA
Available from: 2024-02-18 Created: 2024-02-18 Last updated: 2024-02-20Bibliographically approved

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Type fulltextMimetype application/pdf

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Kroon, Martin

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf