ABAQUS invalid entity messages....

[badger27]

Hi all, new user here....

I'm currently doing some structural analysis of models that I have made in Solidworks, and importing in the IGES format. However I'm unable to work on them in Abaqus (6.5-1), which says that the models are invalid, shown by a series of red vertices.

I have checked the model in Solidworks which is telling me that they're OK. The repair options don't seem to do anything or come up with more error messages...

Does anyone know a way around this?
Cheers, Mike

 

[brep]

Did you try making the part precise? (It's in the Tools-Geometry Repair menu)

 

[badger27]

Yep, tried that. It says that the part is already precise, and that no further action is required, but it's still invalid.

cheers

 

[brep]

Sounds a bit strange... What does it say in the message area when you right click on the part name in the model tree and choose "query" and also "update validity"?

 

[xerf]

Maybe you should try a different file format instead of IGES.

 

[badger27]

Thanks for the replies, but still no luck yet.....
When i run a query it says:

Part: "part2-new", Modeling space: 3D, Type: Deformable
Status: Invalid
It is a shell part(126 shell faces, 1464 edges, 1464 vertices)

It should be a solid part so i'm not sure if this needs changing also, I've tried importing in .sat format and exactly the same thing occurs.

 

[MrMyers]

You will probably need to fiddle around with virtual topology and the "repair geometry" tools to remove slivers, redundant edges and 'create solid from shell' etc. I think what has happened is your edges havenot joined up properly as a result of inaccuracies and rounding off errors.

Depending on the problems ensuing form importing from SW, it is often easier to start from scratch in abaqus.