I have a big problem with pretty easy task. I did analysis with beam elements in Abaqus but I cannot repeat that in Femap. I have curved geometry and I tried with curved beam, normal beam and parabolic beam element but I always get same error. Usually when i get this error I deal with constraints so I did this but didnt work and I tried to increase matrix ration to 10e+25 and ksrot to 1 but again, same error. I did Eigenvalue analysis but fist 10 natural frequencies are too low so I still think that constraints are problem.Please if you have suggestion write it.
Solved! Go to Solution.
NX NASTRAN do not support parabolid CBEAM elements, please post your FEMAP model here and we can take a look to it to know exactly the reason of the error.
To learn more about CBEAM elements please visit my blog in the following address:
All your CBEAM elements (minus ONE) are defined as TAPERED, but properties at both ends are the same, then I don't know if you are aware of this important "detail":
The following plot shows both element properties in the model:
I will convert all elements to follow PROPERTY#2 of a TUBE with radius 27.5 mm.
Instead to apply loads & constraints in mesh, I suggest to apply to geometry (both points & curves), then error debugging is easy and the model setup is more clear.
The loads & constraints applied to the model are the following:
And here you are the displacement results: