Incompatible mesh/non-continuous mesh SLDW2018

Simulation
1

Hello

I launched a static analysis of a mechanically welded structure made up of several components.

The curvature-based mesh does not generate any errors, but its continuity between the components is not ensured anywhere (no problem on my previous simulations) -> cf. PC.

I have checked the "compatible" box in the global contact settings (contact between components), but as soon as the mesh is finished and I come back to this window, the "incompatible" box is checked -> see PC.

Do you have any idea how to fix this problem?

Thank you.

 


maillage_incompatible.jpg
fenetre_contact.jpg
2

Hello, have you tried the "remesh failed parts with an incompatible mesh" box, or even exclude certain components, in order to locate the  areas causing this anomaly,

(if you can share this part of the model, take a look at it,) 

3

Hello Lynk,

Thank you for your answer. I did try to remesh by selecting the box "remesh the failed pieces with an incompatible mesh" in desperation (it would go against the expected result in my opinion), but that doesn't solve the problem...

I excluded the components one by one, no difference either (i.e. the mesh is not failing for any component).

I changed the type of mesh (currently based on curvature, but I also tried standard mesh), nothing helps.

I really have the impression that the problem comes from the settings of the contacts, which automatically switch to "incompatible", even after checking "compatible".

So I tried to delete the global contact and select the components to link manually, it's still not that...

For your information, the characteristics of the mesh are in PJ.

I'll try to recreate an asm to broadcast it, but unfortunately I can't broadcast the current one as it is.

 


caracteristiques_maillage.jpg
4

Hello

I eventually found the source of the problem.

In the analysis, a part was deliberately treated as a non-deformable (rigid) body. This obviously results in the mesh of the assembly as a whole being incompatible, even if you enable the "remesh failed parts with incompatible mesh" option.

 

1 Like
5

So it smells like a bug. You should report the problem to your dealer because it seems to mean that it is impossible to do a study with a non-deformable body.