Hello,
my model is set up so far, now I wanted to examine the influence of an imperfection in the next step. For this purpose, I shifted some points slightly to increase the gap between the components.
Now I have the problem that the error "Faulty definition of surface no. 27" occurs during mesh generation. Two of the corner points of this surface were shifted. Unfortunately, a new modeling of the surface did not help either. I am not sure where the error lies now and ask for help.
Flächenkontakt0.01 - Reibung035 - Druck01 - Kopie.rf6 (1.3 MB)
Hi Baustudi,
A surface contact describes the connection between parallel surfaces. In your model, the surfaces are no longer parallel after the modification, so this object can no longer be used here.
More information:
https://www.dlubal.com/de/downloads-und-infos/dokumente/online-handbuecher/rfem-6/000081#mainTab
Best regards
Stefan Hoffmann
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Hello Stefan,
thank you very much for the hint. Would it then be possible to model the surfaces slanting towards each other as a contact volume?
Best regards
Baustudi
Hi Baustudi,
No, a contact volume also requires parallel surfaces:
https://www.dlubal.com/en/solutions/online-services/structural-wiki/000128
Best regards
Stefan Hoffmann
Ok, too bad, thanks. Is there another way to model such an inclined joint?
Hi Baustudi,
I can imagine that it is possible to realize this via coupling rods in a fine grid. There is no kind of slanted contact element.
You can assign rod nonlinearities and rod end hinges to coupling rods (rigid rods) and thus realize a connection.
Alternatively, an automatic collision detection of unconnected finite elements would be necessary. Such a computational approach is generally only included in scientific programs.
Best regards
Stefan Hoffmann
Hello Stefan,
all right. Thank you very much for your quick responses!
Best regards
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