The problem is presented on the picture. I modeled 2 structures. One in dynamo one in Robot and the bending moments for one modeled in dynamo are flip and have wrong values.
Does somebody knows what is going on, the load is the same, no releases. When I make this arch flat like a beam it is ok, but for curvature is ridiculous.
This may be a result of how you modeled it with dynamo. Can you post your graph?
The code is like that. But I was trying many different ones. I think the bars from dynamo are behaving like a truss bars, not like beams. But even when I change their type to beam in robot it doesn’t work correctly. The section and material I was trying to set up in dynamo and robot, but in both options the effect was the same.