Reply To: SIF of the element

[peteroznewman]

Hi Mom,

If you have a crack in your geometry, you can perform a Fracture Analysis on it.

There is a whole section of the online help about how to do that.

From your other post, I got the impression that the flaw in your solid model is more of a void than a crack. In that case, the Pre-Meshed Crack might work. That is where you use a named selection for the nodes that are on the crack front.

You insert a Fracture into the model and a Fracture Tool in the Solution branch and request the SIFS result.

Today I was playing with geometry to represent the air around an airfoil, so I re-purposed the geometry, assigned Structural Steel material property and defined a pre-meshed crack at the trailing edge. The bottom of the block is fixed and the top has an applied upward force. Here is the SIFS result from the Fracture Analysis.

I found a YouTube video that shows some of these operations in ANSYS 14.5

https://www.youtube.com/watch?v=_JOel_puByA

 

Cheers,
Peter