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Cohesive crack modelling of thin sheet material exhibiting anisotropy, plasticity and large-scale damage evolution
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).ORCID iD: 0000-0001-8699-7910
2012 (English)In: Engineering Fracture Mechanics, ISSN 0013-7944, E-ISSN 1873-7315, Vol. 79, 50-60 p.Article in journal (Refereed) Published
Abstract [en]

The crack tip region in notched structures generally exhibit damage evolution before ultimate failure occurs. In some materials, the damaged regions may reach considerable sizes prior to structural collapse. In this work, a cohesive crack model suitable for static fracture mechanics analysis of thin sheet materials exhibiting anisotropy, plasticity, and large-scale damage evolution was developed. The material parameters of the model were calibrated solely by tensile testing of unnotched test specimens. The predictive capability of the model was verified by comparisons with experiments on notched test specimens with different crack sizes. The predictions of failure were shown to be in excellent agreement with the experiments.

Place, publisher, year, edition, pages
2012. Vol. 79, 50-60 p.
Keyword [en]
Fracture, Damage, Plasticity, Anisotropy, Cohesive zone
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-92361DOI: 10.1016/j.engfracmech.2011.10.001ISI: 000301276000004Scopus ID: 2-s2.0-84855200112OAI: oai:DiVA.org:kth-92361DiVA: diva2:516159
Note
QC 20120417Available from: 2012-04-17 Created: 2012-04-02 Last updated: 2017-12-07Bibliographically approved

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Östlund, Sören

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