Learning Forum

[Joonseong Lee]

In the crack aspect ratio a/c, it seems that the value of a can be obtained with a crack extension probe, but the value of c cannot be obtained?

​I tried calculating by directly taking a node, but the distance is not calculated normally because a new node number is not created after remeshing.

[Lydia Lymperopoulou]

 

Hello Joonseong,

Assuming that your problem involves an elliptically shaped crack, try using the crack length percentage in the crack extension probe in Mechanical. 

The crack length will be the crack length probe with crack length percentage 0% or 100% (depends on orientation of crack front). The crack depth you will also get through crack length percentage 50%. 

 

[Joonseong Lee]

Thanks for the advice. Is it correct to find the crack depth a when set to 50%, and the crack length c when set to 0 or 100%?

[Lydia Lymperopoulou]

yes, exactly! 

[Joonseong Lee]

In the meantime, I was able to get the crack lengths a and c well by setting the crack length percentage, but suddenly, no matter what percentage I applied, only the value at c (0%) came out. Can you tell me why?

[Joonseong Lee]

I think it's because you set 'Min Increment of Crack Extension' and 'Max Increment of Crack Extension' to the same value, is that correct?