NASTRAN Superelements 1

[Spirit]

Hi pals, any of you can suggest me where one can find documentation on the use of Superelements in NASTRAN? I have no possibility of attending the pertaining seminar, so any help will be greatly appreciated.
Cheers.

Spirit


P.S.: I posted the question also on the MSC NASTRAN Software Forum: at the moment it is rather new and rather diserted; let's start it up, I guess a lot of good can come of it!









'Ability is 10% inspiration and 90% perspiration.'

 

[pjhype]

MSC used to publish a "Handbook for Superelement Analysis", written by M. Reymond. You might try calling them to see if you can get a copy. I got my copy about 15 years ago. This handbook is fairly well written and will allow you to to learn superelements on your own.

pj

 

[Mrmech]

hai Spirit!
Sorry i am unable to answer for your Query...i have a basic Q. What is superelements?......

regards
mrmech

 

[brad]

Superelements are elements created from a matrix reduction technique. Normal element-derived FEA matrices are very sparse matrices with many degrees of freedom. One can use techniques to give an approximately-equivalent element with smaller degrees of freedom (smaller "active nodes&quot but with a very densely-populated element matrix.

Superelements can dramatically reduce degrees of freedom in a structure when properly employed. Oftentimes, there is little degradation to the answers when compared with the full-dof systems.

Brad

 

[3637002]

Goodmorning to all,
A customer sent to me two external superelement in *.op4 format with *.asm and *.pch files included, and I have to perfom a Nastran analysis whit a residual structure.
I would like to know how to include the *.op4, *.asm and *.pch file in the main bulk data of the *.bdf file with the residual structure.
On the web I did't find naything about this argument.
Thank You very much, I really don't know how to proceed.

Francesco

 

[Andries]

Hi Spirit,

MSC still has a specific manual available on using superelements. The last update of this manual was in 2006, if I'm not mistaken. If your company is a Nastran user then you should be able to access the manuals on the Net.

Andries

 

[Naffoussi]

Hi,

Please take a look here maybe you will find what you'r looking for. It's an interesting library

http://www.cadfamily.com/SearchHtml.aspx?Keyword=Nastran

Best regards

 

[crisb]

At 9 years old is this the oldest thread in existence?