Using FEMAP with MSC Nastran: Mass Participation Factors

[RealSaladsamurai]

Hi All - I am using the above configuration (not my choice) with FEMAP 11.1.0. When I request the mass participation factors under Analysis Set > Options > Modal XYPlot > Edit > Modal Effective Mass fraction = ON it does not print the results into the f06 file nor does it import to FEMAP as funcions.

I have to manually go into the .bdf file and make the following change:

FROM:

MEFFMASS(NOPRINT,GRID=0,FRACSUM) = YES

(why does FEMAP write the command to file as "NOPRINT" ??? Seems like a bug...)

TO:
FROM:

MEFFMASS(PRINT,GRID=0,FRACSUM) = YES

When I then pull results back into FEMAP, I cannot use the XY capability to plot functions since the functions are not created (due to the manual operation).

Is there a workaround for this to get FEMAP to read the fractions into functions? Manually copying/pasting into Excel is kind of a bummer. It's much better practice to keep all results self contained where possible. Thank you!


NX7.5.5.4 - Teamcenter 8
ANSYS Workbench 14.5

 

[BlasMolero]

Hello,
I run FEMAP & NX NASTRAN and I get the modal mass participation factors in both in the F06 file and cresated in FEMAP the functions for XYPLOT setting in FEMAP the following:

Pleae see if you are success with msc nastran.

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/

 

[RealSaladsamurai]

Hi Blas: Sorry, I did not notice your response until now. I use the same options and cannot recover functions for charting. This is what my workflow looks like:

1 Create FEM and request Summary and Modal Effective Mass Fractionws as shown in Blas' image
2 Export Analysis as .BDF
3 Submit to MSC Nastran Server
4 File > Import > Analysis Results: Here I can choose the .f06 or the .op2 file (I have tried both)

I then look to my Model Tree and expect to see the Functions populated, but I do not. Everything is showing up in my .f06 as expected .... but they are not making it to FEMAP for post processing. I am assuming there must be a way to import the results manually?

________________________
FEMAP v11.1.0
MSC Nastran v2013

 

[BlasMolero]

Hello!,
Currently FEMAP V11.2.1 with NX NASTRAN V10.2 writes the following nastran inout deck:

  MEFFMASS(PLOT,GRID=0,FRACSUM,SUMMARY) = YES

But in fact, if I select MSC-NASTRAN solver then FEMAP V11.2.1 writes the following:

  MEFFMASS(NOPRINT,GRID=0,FRACSUM,SUMMARY) = YES

I will report the potential bug error to FEMAP developers, thanks!.
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/

 

[RealSaladsamurai]

Hi Blas. If I select "Print and PostProcess" in the analysis settings, it will write it correctly as:

MEFFMASS(PLOT,GRID=0,FRACSUM,SUMMARY) = YES

Do you know if there is a way to import the participation factors manually? Or would this require API to pull the results into a function?

________________________
FEMAP v11.1.0
MSC Nastran v2013

 

[BlasMolero]

Hello!,
This is done automatically when running FEMAP with NX NASTRAN, the XYPLOT dialog box controls the type of modal partic­ipation information that is written to the PRINT output file (*.f06). With other nastran flavors I don't know, here you are my NX Nastran output request settings:

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/

 

[jbrackin]

This does look like a problem when writing the MSC version file.
There is a pretty easy workaround for now.
You can use the "preview input" and then "edit preview" capability to correct the output request by removing "no" from the "noprint"

Then submit your run, and read the f06 file manually to create the functions as expected.

Regards,

 

[RealSaladsamurai]

Also, as I show 3 posts up, it can be done in the analysis settings by selecting "Print and Postprocess."

________________________
FEMAP v11.1.0
MSC Nastran v2013