I am currently writing a project paper on the topic of timber-concrete composite construction and have tried to create a model in RFEM. Unfortunately, the deformation of the concrete slab is much too large in my case, which is probably due to the incorrect composite action between timber and concrete. I don't know what to do now or how exactly to create the composite action. I have already watched a video about it and asked the AI for help. Maybe someone could help me with my problem.
Hi Jennifer.Richter, and welcome to the Dlubal Community 
Thank you for your message!
To analyze the problem more precisely, the model file would be very helpful:
Click on File → Save As and select the following settings to reduce the file size:
Then upload the file here (e.g. *.rf6, *.rs9) – this way the community can also contribute to the solution.
Don’t want to share the file publicly? No problem – send it to me via direct message: click on my profile picture or my username → Message.
Best regards
Hedi Boukraa