TY - JOUR
T1 - A dislocation based method using generative algorithms to model notch geometries
T2 - Determination of Mode I SIFs
AU - Larrosa, N. O.
PY - 2014
Y1 - 2014
N2 - This Technical note presents a parametric algorithmic tool to generate two-dimensional notches allowing the use of the DDT to solve the problem of a crack emanating from an arbitrarily shaped notch subjected to Mode I loading. The numerical formulation of the DDT for assessing notches of any shape as well as the basic steps implemented within a graphical algorithm editor to create and discretise the notch geometry are described. Finally, the applicability and accuracy of the procedure is assessed by investigating V-notches, U-notches, semi-elliptical notches and dovetail-like notches. The tool proves to be a simple, general and efficient way of assessing Stress Intensity Factors (SIFs) for cracks emanating from notches with low computational cost and numerical modeling expertise in comparison with other numerical methods, as the Finite Element Method.
AB - This Technical note presents a parametric algorithmic tool to generate two-dimensional notches allowing the use of the DDT to solve the problem of a crack emanating from an arbitrarily shaped notch subjected to Mode I loading. The numerical formulation of the DDT for assessing notches of any shape as well as the basic steps implemented within a graphical algorithm editor to create and discretise the notch geometry are described. Finally, the applicability and accuracy of the procedure is assessed by investigating V-notches, U-notches, semi-elliptical notches and dovetail-like notches. The tool proves to be a simple, general and efficient way of assessing Stress Intensity Factors (SIFs) for cracks emanating from notches with low computational cost and numerical modeling expertise in comparison with other numerical methods, as the Finite Element Method.
KW - Algorithmic modeling
KW - Arbitrarily shaped notches
KW - Distributed dislocations
KW - SIF
UR - http://www.scopus.com/inward/record.url?scp=84906100961&partnerID=8YFLogxK
U2 - 10.1016/j.engfracmech.2014.06.001
DO - 10.1016/j.engfracmech.2014.06.001
M3 - Article
AN - SCOPUS:84906100961
SN - 0013-7944
VL - 127
SP - 327
EP - 335
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
ER -