Learning Forum

[Jose Calaf-Chica]

I am trying to simulate a cylindrical specimen with an annular crack in the outer diameter and subjected to a bending moment. The idea is to estimate the KI of a crack in a specimen from a rotating bending fatigue machine test.

The problem is that since it is an external annular crack, when defining the reference system of the crack tip, the calculation does not run giving the following error:

"One of the crack's mesh encompasses multiple bodies which have different material models. Ensure one material model by scoping these bodies to one material assignment object."

How can I establish a crack tip reference system that accompanies the curvature of the entire annular crack avoiding that problem?

Below you can see images of the model I created.

[peteroznewman]

See if this discussion is helpful.

If that doesn't help, don't use two bodies, make the crack front in a single body. 

[Lee Liedtke]

 

Thanks for your answer. This is what I am looking for.

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