Stress intensity factor in composties? 1

[Bigtree]

In field output, how come we could not find out any stress intensity factor? (Modeling a notched panel)

 

[xerf]

If supported for your model, you have to model a crack or use *CONTOUR INTEGRAL, TYPE=K FACTORS . You should check the usage details in documentation.

If you use CAE in v6.5 , see the Interaction module, menu ->Special->Crack->Create

For older Abaqus version you need to use the Keyword editor.

 

[Bigtree]

Hi, I already created a crack by using ../special/crack/create.. Then, while submitting a job, it showed
"
The following crack objects are not associated with any history output request. "

What's it mean? (I check failure/fracture in history output.)

 

[xerf]

After you defined the crack in the Interaction module you have to go to the Step module and create a new history output request associated with the crack.

Step module->Output Menu->History Output Requests->Create

-Name the request.

-In the 'Domain' box select 'Contour Integral' and the name of the crack.

-Enter an integer for number of contours (I recommend at least 3 or 4.)

-Then select Stress intensity factors.

This procedure is described also in the documentation,
ABAQUS/CAE User's Manual - Section 20.1 Modeling fracture mechanics. (20.1.6 Contour integral output). Did you check it ?

 

[Bigtree]

Hi, thanks. I got it.