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Linear elastic fracture simulation directly from CAD: 2D NURBS-based implementation and role of tip enrichment

Peng, X., Atroshchenko, E., Kerfriden, Pierre and Bordas, Stephane Pierre Alain 2017. Linear elastic fracture simulation directly from CAD: 2D NURBS-based implementation and role of tip enrichment. International Journal of Fracture 204 (1) , pp. 55-78. 10.1007/s10704-016-0153-3

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Abstract

We propose a method for simulating linear elastic crack growth through an isogeometric boundary element method directly from a CAD model and without any mesh generation. To capture the stress singularity around the crack tip, two methods are compared: (1) a graded knot insertion near crack tip; (2) partition of unity enrichment. A well-established CAD algorithm is adopted to generate smooth crack surfaces as the crack grows. The M integral and JkJk integral methods are used for the extraction of stress intensity factors (SIFs). The obtained SIFs and crack paths are compared with other numerical methods.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Advanced Research Computing @ Cardiff (ARCCA)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: Springer Verlag (Germany)
ISSN: 0376-9429
Date of Acceptance: 1 September 2016
Last Modified: 20 Aug 2019 12:00
URI: http://orca-mwe.cf.ac.uk/id/eprint/98982

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