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Automatic mixed-mode crack propagation based on a combined hexahedral-tetrahedral approach
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
2007 (English)In: Advances in Fracture and Damage Mechanics VI / [ed] Alfaiate, J; Aliabadi, MH; Guagliano, M; Susmel, L, 2007, Vol. 348-349, 581-584 p.Conference paper, Published paper (Refereed)
Abstract [en]

In the present paper, a new method for inserting cracks with out-of-plane features is presented. Starting point is an arbitrary reference structure and a crack of any shape. The final cracked structure is represented by hexahedral elements in the crack-front region and tetrahedral elements in the remaining structure domain. The tetrahedron is employed to take advantage of the versatile meshing capabilities and the collapsed quarter-point hexahedron gives good crack-tip behaviour. Stress intensity factors are calculated from the asymptotic stress field, retrieved from the integration points near the crack-tip.

Place, publisher, year, edition, pages
2007. Vol. 348-349, 581-584 p.
Series
Key Engineering Materials, ISSN 1013-9826 ; 348-349
Keyword [en]
finite element method, crack growth, mixed-mode, stress intensity factors
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-41092ISI: 000249123300146Scopus ID: 2-s2.0-34547235543OAI: oai:DiVA.org:kth-41092DiVA: diva2:443902
Conference
6th International Conference on Fracture and Damage Mechanics Location: Madeira, Portugal, Date: JUL 17-19, 2007
Available from: 2011-09-27 Created: 2011-09-23 Last updated: 2011-09-27Bibliographically approved

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