Reaction Forces at RBE2 elements in NX Simcenter

[martin555]

Hi

I am looking to export X,Y and Z forces from a RBE2 element in NX Siemens Simcenter.
I have used an RBE2 at a joint that transmits X,Y and Z forces.

I am more familiar with PATRAN post processing, in which it had the ability to simply plot the MPC forces in the software and also had the ability to select a coordinate system to reference the results.

I have requested the MPC forces in the solution, resulting in the ability to look at Reaction Force MPC Nodal in the results tab in NX Simcenter.

I would like to get the reaction forces at the independent node, to determine how much force is being transmitted through the joint and also determine what coordinate system it is referenced to.

Would anyone be able to assist with this post processing ?

 

[BlasMolero]

Dear Martin,
I run Simcenter FEMAP not NX/SC3D but the solver is the same Simcenter NASTRAN.
In FEMAP we have the capability to plot FREEBODY Diagrams, this is critical to investigate reactions and loading transmision along the model. This will incluide the card GPFORCE in the nastran input file that requests grid point force balance at selected grid points. Grid point force balance is computed from linear and nonlinear elements, the sum of applied and thermal loads, and MPC and SPC forces.

I have created a simply problem of a wall plate with a welded cantilever beam under different loiads cases of shear, bending and axial loadings using RBE2 elements to simulate how the plate is bolted to the wall.

If I run the model I can create a FREEBODY to compute reaction forces anywhere I need, for instance at bolting joints:

You have the components of the reactions forces in the INDEPENDENT node of the RBE2 elements and also the summary of reaction forces: +3000 N, exactly equal to the applied load FZ=-3000 N.

I can animate results:

Here attached you have the simcenter nastran input file just created to import in NX/SC3D, enjoy!
Best regards
Blas.

~~~~~~~~~~~~~~~~~~~~~~
Blas Molero Hidalgo
Ingeniero Industrial
Director

IBERISA
48004 BILBAO (SPAIN)
WEB:

http://www.iberisa.com

Blog de FEMAP & NX Nastran:

http://iberisa.wordpress.com/

 

[martin555]

Hi Blas

Thank you for this extremely helpful post.
The images provided were extremely helpful.