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Is the limit of stress intensity factors "1" when the crack length is close to "0"?

Submitted by Zhanqi Cheng on
education
fracture

I have read some papers about fracture mechanics of functionally graded materials. I find there are different results for the stress intensity factors when the crack length is close to "0" . In some papers the values of stress intensity factors are "1" when the crack length is close to "0" , but in other papers the values of stress intensity factors are not "1". I obtain the stress intensity factors is "1" when the length of crack is close to "0". I hope to get the explaination about the results.Thanks a lot.

XFEM

Submitted by Uno Mutlu on
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Fracture Mechanics Forum
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XFEM in ABAQUS

Hello,

As far as I understand from the previous blogs: we can now embed XFEM in ABAQUS. Is this approach restricted to linear elastic behavior? Can we simulate fracture propagation in an elasto-plastic material ("XFEM coupled with ABAQUS" type analysis) or is this approach only limited to fracture propagation in elastic materials.

 Thanks,

 Uno.

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