Autodesk Inventor or Simulation Weld Assembly FEA

[balajiisbalaji]

Hi guys,

I would like to simulate a Linear Static simple Welded cantilever beam in Inventor.

The Cantilever beam is rectangular cross section and is welded to wall.

I am trying to validate the weldment feature in both inventor and autodesk simulation,

I am not sure whether both the codes are same, for example Autodesk simulation was previously called Algor.

Case 1:
In inventor the weld surface are by default bonded contact constraint, I think it just does a Simple FEA calculation,i dont think it considers the weld parameters.

Case 2:

In autodesk Simulation, when i import all the Inventor assembly with the weld beads and run the simulation it takes the contacts as welded surface,when i run the FEA simulation it shows really good results.


But i am not sure whether these result are real,in fact both the inventor and simulation results are not the same.

Is it really good/advisable to use Inventor/Simulation to perform large welded assemblies static analysis.


If not please are there any other good softwares which can perform large fillet weld analysis.

Thanks
Expecting your reply soon

 

[structSU10]

In autodesk simulation you have to tell it that the parts being welded together are not bonded together, so that the load only goes through the weld. If you select the surfaces in contact with each other you can tell the program the type of contact or bond restraint to use. If you did not do this, the program assumes they are completely bonded at their interface, and thus the load on your weld will be way too low.

 

[balajiisbalaji]

Yes...i have given a small gap of 0.1mm, so the load does not transfer through the parts.

It only transfers through the weld bead, but still it is not doing any special weld analysis.

Just the basic FEA stuff.

Is it similar in the softwares ANSYS\Abaqus?

does it already have a weld tool? or we just need to model them separately?

 

[Espin]

Inventor only take weld seams as geometric parameter, in fact almost all the another CAM software like ansys in
linear condition makes the same even in analytical way.
But with inventor you can see what happen with torsion stress, I mean cantilever beam warp.