TY - JOUR
T1 - Linear elastic fracture simulation directly from CAD
T2 - 2D NURBS-based implementation and role of tip enrichment
AU - Peng, X.
AU - Atroshchenko, E.
AU - Kerfriden, P.
AU - Bordas, S. P A
PY - 2017/3/1
Y1 - 2017/3/1
N2 - 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 Jk integral methods are used for the extraction of stress intensity factors (SIFs). The obtained SIFs and crack paths are compared with other numerical methods.
AB - 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 Jk integral methods are used for the extraction of stress intensity factors (SIFs). The obtained SIFs and crack paths are compared with other numerical methods.
KW - Boundary element method
KW - Crack growth
KW - Isogeometric analysis
KW - Linear elastic fracture
KW - NURBS
UR - http://www.scopus.com/inward/record.url?scp=84989196157&partnerID=8YFLogxK
U2 - 10.1007/s10704-016-0153-3
DO - 10.1007/s10704-016-0153-3
M3 - Article
AN - SCOPUS:84989196157
VL - 204
SP - 55
EP - 78
JO - International Journal of Fracture
JF - International Journal of Fracture
SN - 0376-9429
IS - 1
ER -