Learning Forum

[Sahil Sura]

Hello Andre Conde Vazquez,

Answer for the Q1-
So if you consider the functionality of the contacts,
Bonded contact is a contact that won’t let the contact and target bodies separate and slide with respect to one another.
If seen for No Separation contact, the contact face can slide with respect to the target but cannot be separated,
while for Rough, it can separate in a normal direction but cannot slide in a tangential direction (as the coefficient of friction is assumed to be infinite)

Your case is to compare bonded with the other two combined (No Separation and Rough) so as to get a similar kind of behavior.

If you consider it theoretically, it might be possible to get similar results. But this will lead to over-defining a contact which might not help the problem to converge!
Practically, with the computational considerations, if a problem can be solved with a linear contact (Bonded), using a rough contact which is a non-linear type, would increase the computational expense.
So when using a combination of contacts, you might need to deal with some convergence issues.
 

Answer for the Q2-

On solving a well-defined model, you can insert requested results for post-processing of the results. These can be pre-defined ones or you can define the results as per criteria using the ‘User Defined Results’ object.
To export the result to a file (.txt or .xls), you can simply right-click on the result and export it to the respective file format.
Exporting Results (ansys.com)

Now if you want to import the data from a file to the new system, the ‘External Data’ system from the workbench homepage is useful. You may want to select how the data is arranged, for what it must be scoped to, etc.
For more details please refer to the following link-
External Data Import (ansys.com)

For more details on contacts please refer to the –
Contact (ansys.com)
Contact Formulation Theory (ansys.com)

The above references would also help you get familiar with the functionality of each contact type, which might serve you helpful in addressing the changes in forces observed.
 Hope this helps!
Thanks,
Sahil
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