[macRC]

Hello everybody,

I´m not an expert in structural simulation and analysis, but I´m familiar with the basics in the common situation anisotropic, elastic and linear.

For an easy geometry I´m interested in the stress analysis of let´s say two 5 mm thick welded aluminum sheets. I use the effective notch stress approach.

For this, I remove material whit a radius of 1 mm in the area at the root of the welding seam. But how could I model/ mesh the end of the welding seams? Since it´s not a "closed" welding seam, I have to model it´s ends without getting singularities.

I hope the situation is clear:
There is a vertical and horizontal plate and the blue wedge represents the welding seam. You can see the U-shape notch, but as there is a right angle, I achieve singularities and I want to avoid this.

Thanks a lot in advance.

kr macRC

[macRC]

Hi,

I got a new results, please have a look on model and mesh of the welding seam attached.

I don´t know if itis the correct approach, "opening the notch and add rounds". But at least the singularity could be reduced ...

What do you think? Is it sufficient for a serious failure analysis?
It´s just a steady load.

I´m looking forward to your responses.

kr macRC

[karachun]

I would make plate model, calculate forces on weld and compare it (forces/moments, not stress - this is crucial!) with allowable values from standards/structural codes, like Eurocode 3 or ASME.
https://nptel.ac.in/courses/112105125/pdf/mod10les4.pdf