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cweld conversion (from elemid to partpat)

Altair Forum User

Hello,

i use fe absorb to absorb nastran cweld (nastran80-88 type) then unrealize all of them.

then i change weld type from elemid to part pat and realize it.

at the end, i lose GS value of cweld elements. What could i do ? what is wrong with these method ?

thank a lot

mustafa

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Altair Forum User

Are you realizing with the correct config? The 'GA-GB PARTPAT' config doesn't populate the GS value. Only the 'GS PARTPAT' does. Both configs are considered part pat.

Altair Forum User

i am sure i realize with GA-GB PARTPAT and i recieve following errror. i check the manual

** USER FATAL MESSAGE 316 (IFPDRV)

ILLEGAL DATA ON BULK DATA ENTRY CWELD

CWELD 6765647 2 PARTPAT 954511 954512 +000C09

++000C095447 5447 +000C0A

format is like that

CWELD EWID PWID GS 'PARTPAT' GA GB

PIDA PIDB

XS YS ZS

also I check the card/elems in hyper. then i see GS=0

so i conclude there is missing GS value ?

regards,

mustafa

Altair Forum User

For this config GS should be blank, so I don't think that is the problem. Just for clarification, are you using Radioss bulk for the solver? Looks like you were using a Nastran configuration previously.

If so, try puptting a connection location in the card and see if that works. (yours are blank, or you did not include the third line) If it does, then I will check on why those fields are not being populated.

Altair Forum User

i use nastran as a solver.

i put the G5 value manually but it gives error again.

*** USER FATAL MESSAGE 316 (IFPDRV)

ILLEGAL DATA ON BULK DATA ENTRY CWELD

CWELD 6757874 2 934009PARTPAT 940476 940477 +000BNF

++000BNF5447 5447 +000BNG

GS=934009

so GS is not problem but what it is ?

regards,

mustafa

Altair Forum User

You will have to check the NASTRAN manual for details on this error message.

I was referring to manually populating the XS, YS, and ZS fields, as it looks like they are required for the option you are trying to use. Leave GS blank.