Recently, I finished a FEA model for a pressure vessel. the solid model was developed by another engineer. it had one very high stress location in an unexpected location. the constraints he use to locate the parts i found unusual. The pressure vessel had a bolt flat end cap on one end a weld head on the other. The flat end cap was not constrained using the features in the welded housing. The end cap was constrained using a part that would normally be installed later in the assembly process. I would think it not make a difference. The FEA modeler locates all the parts using connections, etc. Has anyone an issue between constrains and connection causing high stress location?
hi emil, a picture of the setup and the model might be helpful
regarding connections and constraints, remember they are idealized. they act as infinitely rigid in most cases which can develop high stresses around them. if your interest is right in that area, you need to add the next component in your assembly. there are many conversations about this on the forum. look for stress singularity or stress concentrations.