Hello,
I hope it's no problem, if I refer to this Post as I am facing similar difficulties.
I am trying to model a four Point Bending Beam made from FRC. I am using Gid Science in combination with ATENA Studio and "Cementious 2 user" as material model. The Model is a 3D Beam.
My first attempt was similar to the 2D Tutorial for FRC. I applied the same displacement on each loading plate. As the main Crack didn't developed symetricaly I got positive Forces in one of the boundary plates (Which wouldn't happen in reality)
Now I tried to model the beam of the Testing machine, which is able to rotate and therefore a uneven displacement of the loading plates is possible and therefore no pulling at the boundary loading plate can happen.
I tried to model the hinge by the conection of the beam of the testing machine with the loading plates via "fixed contact for line".
When I am trying to run the analysis now a warning message in Gid appears: "
',4MPa' Expected identifier at position 1
Warning: Some selection of condition Fixed_Contact_for_ MASTER has zero size. ContactName =Prüfmaschine links
Warning: Some selection of condition Fixed_Contact_for_ MASTER has zero size. ContactName =Prüfmaschine rechts
Warning: Some selection of condition Fixed_Contact_for_ SLAVE has zero size. ContactName =Prüfmaschine links
Warning: Some selection of condition Fixed_Contact_for_ SLAVE has zero size. ContactName =Prüfmaschine rechts
Info: Input file was written and is executed in AtenaStudio
Moreover ATENA Studio won't start at all, stating:
"Can not Start analysis - Input file was not specified or doesn't exist"
I would highly apreciate your help. Thanks in advance.
Nils Rittel
