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crack propagation in abaqus cae
- Thread starter rwwillia
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johnsmith2
Mechanical
Do you mean fatigue crack growth? da/dN?
I think in abaqus, you can model the different crack length and find the J-integral corresponding. Then, using fatigue criterion to make comparsion with experimental results.
I think in abaqus, you can model the different crack length and find the J-integral corresponding. Then, using fatigue criterion to make comparsion with experimental results.
The crack propagation in ABAQUS is based on the node release approach. You define a pair of surfaces in similar manner to contact modeling. Initially the surfaces are bonded. As the propagation criterion is fulfilled ( COD or critical stress) the nodes of the 2 surfaces will be released.
The steps to model crack propagation are explained in the documentation. For v6.5 see
ABAQUS Analysis User's Manual -> 7.9.3 Crack propagation analysis
The steps to model crack propagation are explained in the documentation. For v6.5 see
ABAQUS Analysis User's Manual -> 7.9.3 Crack propagation analysis
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- #4
I'm working with a static load (not cyclic). I want to model the crack propagation so that I can plot a load versus crack growth curve. My current model has a circlular face partition (instance) around the initial crack tip so that I could have the collapsed quarter-point elements. I figure there must be some way to propagate the crack and have the mesh move with it? Or, am I better off using Patran for my pre-processing and just use ABAQUS/Standard? I'm relatively new to this, so I'm pretty much the novice. Thanks!
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