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Propagation of cracks in selected specimens subject to mixed-mode
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
2010 (English)In: Structural Durability and Health Monitoring, ISSN 1930-2983, Vol. 6, no 3-4, 305-327 p.Article in journal (Refereed) Published
Abstract [en]

In a previous article the K-distritubion along the crack front of several mixed-mode specimens was investigated [Dhondt, Chergui, and Buchholz (2001)]. Both the modified virtual crack closure integral method and the quarter point element stress field method yielded results close to the available reference solutions in the literature [Murakami (1987)]. The present paper extends these results in two aspects. First, the meshing procedure used to obtain a focused mesh at the crack front is modified in order to deal with highly curved cracks. Secondly, the K-distribution along the initial crack is used to perform a crack propagation calculation. The form of the propagated cracks agrees well with what one expects and with experimental evidence.

Place, publisher, year, edition, pages
2010. Vol. 6, no 3-4, 305-327 p.
Keyword [en]
Crack propagation, Curved cracks, Mixed-mode
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-150295ScopusID: 2-s2.0-79957939247OAI: diva2:742816

QC 20140902

Available from: 2014-09-02 Created: 2014-09-01 Last updated: 2014-09-02Bibliographically approved

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