CBAR OP2 ELETYPE 100

[Tristan Simmonds]

Dear Renaud,

Thank you for FeResPost it is looking incredibly useful.

I am currently carrying out just a simple test of some beams in NASTRAN (Patran 2010) with element force results.

When the beam elements are CBEAMs I can load the OP2 and read results however when I switch to CBAR elements I get the error 'skipping ELETYPE 100' and no results are loaded.

Files attached.

Any ideas?

It is not too critical, I can use CBEAM elements however I am planning on running models with ~1m elements and the solution takes a bit longer.

Many thanks,

Tristan

[Tristan Simmonds]

Resolved.

The issue was addition of station points to the CBAR elements.

Removing them solved the problem.

[FeResPost]

Hello Tristan,

I quickly reviewed Nastran Quick Referrence Guide. I presume you have been using the CBARAO bulk card... I have been using MSC Nastran for more than 20 years, but I never used CBARAO cards and I was not even aware it is possible to add intermediate stations to CBAR elements.

I will have a look one of these days.

Thank you for the information,

Renaud

[Steven Doyle]

Renaud,

If I recall correctly, the CBAR-100 element will be created if any of your subcases reference a PLOAD1 card (bar/beam pressure) and it's a static solution.  If I'm not sure if the CBARAO has this same effect.

Steve

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[Tristan Simmonds]

Thanks Renauld, Steve,

 PATRAN has input for CBAR 'stations' but I haven't checked what gets written in the BDF.

 I'm new to NASTRAN so I dont know my way around BDFs particularly well so I'm just randomly changing settings in PATRAN most of the time.

Removing beam (pressure) loading does the trick.

Tristan

[FeResPost]

Hello Steve, Tristan,

Thank you for the information. I have read yesterday the DMAP programmer guide, and I have the feeling that the reading of CBAR-100 element results might be a little tricky in FeResPost because the values are associated to a "real" position in the element and not an "integer" one. So I will put the support of CBAR-100 element in my list of "things to do", but it is not my first priority. (I am now working on the composite part.)

but I will work on it.

Renaud