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@article{Nejati:2015:10.1016/j.engfracmech.2015.06.055,
author = {Nejati, M and Paluszny, A and Zimmerman, RW},
doi = {10.1016/j.engfracmech.2015.06.055},
journal = {Engineering Fracture Mechanics},
pages = {194--221},
title = {On the use of quarter-point tetrahedral finite elements in linear elastic fracture mechanics},
url = {http://dx.doi.org/10.1016/j.engfracmech.2015.06.055},
volume = {144},
year = {2015}
}
TY - JOUR
AB - This paper discusses the reproduction of the square root singularity in quarter-point tetrahedral (QPT) finite elements. Numerical results confirm that the stress singularity is modeled accurately in a fully unstructured mesh by using QPTs. A displacement correlation (DC) scheme is proposed in combination with QPTs to compute stress intensity factors (SIF) from arbitrary meshes, yielding an average error of 2–3%. This straightforward method is computationally cheap and easy to implement. The results of an extensive parametric study also suggest the existence of an optimum mesh-dependent distance from the crack front at which the DC method computes the most accurate SIFs.
AU - Nejati,M
AU - Paluszny,A
AU - Zimmerman,RW
DO - 10.1016/j.engfracmech.2015.06.055
EP - 221
PY - 2015///
SN - 0013-7944
SP - 194
TI - On the use of quarter-point tetrahedral finite elements in linear elastic fracture mechanics
T2 - Engineering Fracture Mechanics
UR - http://dx.doi.org/10.1016/j.engfracmech.2015.06.055
UR - https://www.sciencedirect.com/science/article/pii/S0013794415003215
VL - 144
ER -
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