Learning Forum

[Sahil Sura]

Hi Rodrigo Barata Correia,
Please correct me if I'm misinterpreting the question,
So you've performed a 3-point bending test on the sample (Sample A)of composite laminate (Of which you don't know any properties)
You got data of force versus displacement curve, flexural modulus, stress vs strain curve, etc. for Sample A.

Now you perform a 3 point bending simulation in Ansys but here you assign ' 230 GPa woven carbon fiber' material to the sample and get the results different.
Now the question is how to model the material similar to Sample A in Ansys so that the results for the bending test are similar ?

Is my interpretation of the question correct?

If yes, there are following steps that might help you in solving the issue.

First you might want to find out the grade of the carbon fiber and the epoxy used. From the data sheets of the material, you might get complete idea of individual fibers and matrix.
With the use of 'Material Designer' in Ansys, you can create a representative volume element (RVE) of the laminate and simulate the same with the logged in data.
This is an idealistic way to get a detailed simulation of the composite laminate.

Other method can be, editing the pre-defined materials with the known values. You might want to duplicate any one of the materials present in the Ansys Material library closest to the one with the sample.
Rename and Update the parameters of the new material. These parameters can be obtained through the physical testing of the samples.
Once added, you can proceed with the same newly created material and check again the results comparing it with the test case.

Also feel free to reach out again if any doubts faced.
Please refer to the following resources to get more information on the same-
https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v231/en/wb2_help/wb2h_EngDataapp.html?q=Engineering%20data
https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v231/en/wb2_help/wb2h_MaterialDesigner.html?q=Material%20designer

Hope this helps!
Thanks,
Sahil
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