You are applying a pressure that doesn’t take into account material property or geometry of the part. Your resulting “pressure” from the fringe plot w...

@delron hm interesting…even still, curious what the end goal of doing something like this is

@delron Oh well that's your problem. Spotwelds are meant to connect nodes to surfaces, not beams. That's why you are getting the error. Wh...

You can also look at the residual force plots to find the trouble spots. I would assume there's a problem with the interface between the layers.

Hi @jiiuhuii, Have you tried adjusting the number of cells? I know variation in mesh density is a common culprit for convergence failure.

I can say that generally errors like this indicate something is wrong with a constraint, to the point where Dyna is just endlessly trying to solve it....

Hi @delron, I'm not familiar with SPR3. Is this in reference to *Constrained_interpolation_spotweld (SPR3) or *Mat_constrained_SPR3?

@joneseffect Nailed it. I know this is old but for archiving: One last important *DATABASE card is *DATABASE_EXTENT_BINARY, specifically STRFLG. Thi...

@mmia1 I suggest reading through the link below and the section in the manual that goes over *Element_beam and when you need to define a N3 orientatio...

@mmia1 yes it’s 100% okay and probably the recommended way to model something like this. Beam elements can be used to define structures of all shapes,...

@mmia1 I see. Have you attempted to model the same shape with standard beam elements instead of the specific *element_beam_elbow? Could just be a prob...

Sorry, I know this was posted a while ago. In order to create a disconnected mesh with overlapping nodes, you just need to take the mesh you want to "...

@mmia1 when you say your results are x10 expected, which part are you referring to? And how are you sure of the expected stress? Did you do a hand cal...

@geardyn-1 yeah, I'm not sure how well Dyna can simulate something like wear. Have you read this? It might be something more suited for Abaqus?

@yoshimori3456 yeah, that warning is also because you can't have 2 rigid constraints on the same node. It looked like both the shell parts and solid p...