welds and stress analysis

Is it possible to check welds with cosmos xpress? I am not sure how to
approach it. I would like to see how two welded tubes distort under stress.

Knotfreak

 

Welds are very difficult to analyze unless you know the residual stress
remaining after the weld cools. You may also need to use contact if
there is a space under the weld as frequently happens with fillet
welds. Neither Cosmos Xpress or CosmosWorks are particularly well
suited to this.

 

"solid mechanical analysis", see FEWELD from weavengineering

www.weavereng.com

www.iberisa.com/cosmosm/feweld.htm

 

From the looks of it it needs Cosmos/M to function. Shell models.

 

In aerospace the allowables for weld material is much less than that of the
parent material, this is to allow for inclusions and cavities in the weld,
also any unknowns in the final heat treat.
It may be possible in this case to make an assembly with the welded joint
being a seperate part with a different material property. never tried it but
seems like it might work.

 

It is interesting that it seems to work only with Cosmos/M and Ansys. I
think that is because they expose nodal results for individual shell
elements.

 

We use FEWELD since 4 years. With large models meshed with shells, we can
add a mechanical analysis of the welds according to AWS standards.
It's an opened software, we have already modified it to be compatible with
french standards for example.
We hope to have it on cosmosworks.

Please vote to have it available in CosmosWorks.

 

And NE Nastran