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A quasi-static crack propagation simulation based on shape-free hybrid stress-function finite elements with simple remeshing

Ming-Jue Zhou, Song Cen, Yi Bao, Chenfeng Li Orcid Logo

Computer Methods in Applied Mechanics and Engineering, Volume: 275, Pages: 159 - 188

Swansea University Author: Chenfeng Li Orcid Logo

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Abstract

In this paper, a new shape-free multi-node singular hybrid stress-function (HSF) element and a shape-free 8-node plane HSF element proposed recently are employed to simulate the quasi-static 2D crack propagation problem. Compared with other well-known methods, such new scheme exhibits four advantage...

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Published in: Computer Methods in Applied Mechanics and Engineering
ISSN: 0045-7825
Published: 2014
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa21432
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Abstract: In this paper, a new shape-free multi-node singular hybrid stress-function (HSF) element and a shape-free 8-node plane HSF element proposed recently are employed to simulate the quasi-static 2D crack propagation problem. Compared with other well-known methods, such new scheme exhibits four advantages: (i) for the singular element, the shape and the number of nodes can be flexibly adjusted as required; (ii) high precision for stress intensity factors (SIF) can be obtained due to the advantages of the HSF method; (iii) only simple remeshing with a very coarse mesh is needed for each simulation step; (iv) unstructured mesh containing extremely distorted elements can be used without losing precision. It demonstrates that the proposed scheme is an effective technique for dealing with crack propagation problems.
Keywords: Finite element, Hybrid stress-function (HSF) element, Shape-free, Crack propagation, Simple remeshing
College: College of Engineering
Start Page: 159
End Page: 188