there is one point I already want to know for a long time:
Why does exist after solving a NX simulation two entries for
- REACTION FORCE MPC NODAL and
- REACTION MOMENT MPC NODAL
in post processor module?
I can see differences in visualizing but is that the only one?
I had models where I could not export nodal results from RBE-connected nodes to excel in one of the entry selections as the values got quantities of 1e-10 N. I did produce "empty" simulation solutions only with constraints of user defined non-zero nodal displacement values.
I think there are "inner" differences, but of what kind? - Who can explain it to me?
With kind regards,
Solved! Go to Solution.
Nodes generally have 6 DOF. Any type of nodal boundary condition (constraint, force, etc.) will have 6 corresponding components, i.e. dx, dy, dz, rx, ry, rz. The measure on the first 3 terms is force, displacement, etc. The measure on the second 3 terms is a rotation or moment type quantity (radians, Nm, etc.)
Since the measures are not consistent between the first 3 dof and the second 3, NX Post splits these into two 3DOF vectors. REACTION FORCE MPC NODAL contains the X, Y and Z translational forces. REACTION MOMENT MPC NODAL contains the moments about X, Y and Z
thank you for answering but this is not the point I meant.
Of course I know the difference between reaction forces and reaction moments and the necessity of separating it because of unit discrepancies.
No, I mean there are
- two entries for REACTION FORCE MPC NODAL
- two entries for REACTION MOMENT MPC NODAL.
Its NX 8.5.2.
That's my question. Can you explain it? - It would be gratefully.
With best regards,
Momentarily I do not see both entries twice and I do not know what's the difference in modelling comparing former states. I try to figure it out.
Best wishes, Michael
I've seen this as well, but I can't reproduce it in a model I'm using currently. I don't believe that I ever reported this through an IR/PR either. If you can reproduce it, please contact GTAC as I believe it is a bug.
the world is really small!
I've found out, that the first one is Grid Point Reaction Force/Moment MPC - Nodal.
See it in NX10.
Best wishes, Micahel.