Weld calculation using shell model

General Questions
1

Hi All,
I have a little problem with a simple model that I created to simulate two plates welded together.

Cattura
Cattura1104×750 55.7 KB

The model is made by a horizontal plate that is welded with a vertical plate by a weld (triangular shape in the model).
I did a compound of the three shell element; I applied a surface traction onthe vertical plate a fixed the extremities of the horizontal plate.
I applied control node in both the side of the weld, because I need to extract the reaction forces.

This is the message that appear when I try to run the calculation:

Cattura2
Cattura2477×193 3.59 KB

Do you have an idea where I did the mistake?

WBR

Marco F.

Prova_giunto_saldato.pmx (162.1 KB)

2

Since it’s a 2D plane stress model, you have to use a solid, not shell section for it.

Also, flip the normals of the top faces:

normals
normals1064×622 11.2 KB

and replace Fixed BC with Displacement/Rotation one to avoid further errors.

Prova_giunto_saldato_mod.pmx (162.1 KB)

3

Thank you very much for your help :star_struck:

4

I would have a look first to 2D plane Strain modelling