Journal article 994 views
A quasi-static crack propagation simulation based on shape-free hybrid stress-function finite elements with simple remeshing
Computer Methods in Applied Mechanics and Engineering, Volume: 275, Pages: 159 - 188
Swansea University Author:
Chenfeng Li
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DOI (Published version): 10.1016/j.cma.2014.03.006
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...
| Published in: | Computer Methods in Applied Mechanics and Engineering |
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| ISSN: | 0045-7825 |
| Published: |
2014
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| Online Access: |
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| 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. |
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| Keywords: |
Finite element, Hybrid stress-function (HSF) element, Shape-free, Crack propagation, Simple remeshing |
| College: |
Faculty of Science and Engineering |
| Start Page: |
159 |
| End Page: |
188 |