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October 15, 2024 at 6:22 amg.theodorou2482Subscriber
Hello everybody.
I have a concrete slab that i would like to study and there is an embedded steel part inside the concrete. I have attached a screenshot of the model.
The embedded steel part is solid, not just the regular beam LINK180 parts. I made a cavity in the concrete slab, so the 2 parts are separate.
My question is, what should be the contact type between the concrete slab and steel component? Frictional or bonded? I think frictional is the most representative, but i would like to hear your opinions.
Thanks in advance! -
October 15, 2024 at 7:20 amtiwari15abhinavSubscriber
Hi,
About the contact most of it depends upon the results you are looking for. If you want find if there is any relative motion in between your steel component and concrete you should definetly go for frictional contact. For solving other cases Bonded contact should work fine.Â
Frictional contact will also work fine with you simulation but will increase the simulation time.
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October 15, 2024 at 8:20 ammohan.ursAnsys Employee
Hey,Â
The choice of contact comes down to two main points - one is how close does the simulation represent the actual scenario and the second is how much simulation time and model setup time is involved to get results.
You can start with bonded contacts and check the results. Sometimes bonded contacts might not be the best due to the fact that it might over constrain the parts and lead to spurious stress.
If that is the case you can shift to frictional. Frictional contacts not only make the analysis non linear but also take considerable time while setting up as they are not as simple as modelling bonded contacts.
Thanks
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October 15, 2024 at 1:11 pmg.theodorou2482Subscriber
What is concerning to me is that under the application of the force, the steel part may separate easily from the concrete surface which i think is not very realistic, as we have some kind of chemical bond between the steel part and the concrete at their interface, is that correct?Â
Based on the above, do you think a non-separation contact would be more representative? Thank you!Â
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