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Combined dynamic load

I have a problem setting a combination of dynamic loads, i use a load step inputs with a dynamic load combination card, and the solver game me this error

i searched on the wiki how to set this card, but i did not found anything,

i put two scailing factor , 1 and 0.5, and other combination, but the reults is always the error

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OptiStruct

v2024

Accepted answers

All comments

Rajashri_Saha

Hi Alberto,

Your definition of DLOAD looks ok.

Did you create this Hypermesh GUI or edited the fem deck? The character spacing from the image looks to be having issue. each field has to be 8 characters spacing. Can you check this?

You can also import the file and check if all the data is coming properly in hypermesh interface.

If it is not helping, upload your file here.

Thanks

Rajashri

Alberto Buccellato

Hi Rajashri

i'm uploading the file, because i don't know also if my procedure is correct, usually to analyse 2 different dynamic load, we use this card with 1 to 1 scailing factor?

i'm attachaing the fem file

thank you in advance

Alberto

comb.fem

Rajashri_Saha

Hi Rajashri

i'm uploading the file, because i don't know also if my procedure is correct, usually to analyse 2 different dynamic load, we use this card with 1 to 1 scailing factor?

i'm attachaing the fem file

thank you in advance

Alberto

You have missed to give S=1 while defining DLOAD. It was 0 in your file, I updated it and it ran.

See the below image.

Thanks

Rajashri