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An Efficient Model for Crack Propagation

S.S. Xu, Y. Dong, Y. Zhang

Computer Modeling in Engineering & Sciences 2008, 30(1), 17-26.


A meshless method for arbitrary crack growths is presented. The new method is based on a local partition of unity by introducing additional degrees of freedom that determine the opening of the crack. The crack is modeled with overlapping crack segments located at the nodes. The crack segments are rotated at directional changes of the principal tensile stress such that smearing of the crack is avoided. Such smearing occurs in fixed crack method probably because of inaccurate stress state around the crack tip when the crack propagates. The key feature of our method is that it does not require algorithms to track the crack path. The simplicity of our method makes it is especially useful for industrial applications.


Cite This Article

Xu, S., Dong, Y., Zhang, Y. (2008). An Efficient Model for Crack Propagation. CMES-Computer Modeling in Engineering & Sciences, 30(1), 17–26.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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