Strange behavior with REAC_NODA when using 2D_DIS_TR, and C_PLAN

ppeetteerr

I am using a dummy node ( 2D_DIS_TR) , to apply a moment (DRZ) to C_PLAN. The method works reasonably well, the stresses and displacements appear about right. However when I look at REAC_NODA it gives me the displacement (DRZ) instead of the reaction moment (DRZ). I get the same results if I apply a displacement. Can someone Help me see the error of my way?

Peter

Attached file:
2DTR2Plane.tgz, 290826kb

jeanpierreaubry

hello

i do not understand what you what to do

but it seems to me that the bulk of your model ie the QUAD4 elements have no mechanical properties defined with AFFE_CARA_ELEM

jean pierre aubry

ppeetteerr

C_PLAN has the degrees of freedom (DX, DY). I would like to apply an angular displacement (0.2 radians) to these elements. To do so I am coupling 2D_DIS_TR (DX, DY, DRZ) to them through LIAISON_SOLIDE. I can apply an angular displacement using such a technique and the stress and displacements are what I would expect. However, when I examine the reaction forces through REAC_NODA the reaction forces that are listed are actually the displacements (e.g. 0.2 DRZ)

Peter

Maggoo

Dear colleagues,

I am trying a very similar thing (applying a rotation to a C_PLAN model), but the problem is that, when I try to recover the DX and DY resultants and the DRZ torque, the program complains about the list of RESULTANT and MOMENT not being of the same size("les listes arguments des mots clés RESULTANTE et MOMENT doivent être de même longueur").

But how could it be when the underlying element have 2 displacements and 1 rotation? Even if I try to trick the program using only DX in RESULTANTE it comes back to the same complaint.

Any comments on that would be useful.