Hi,
I am doing a simple pressure analysis on a pipe that is threaded on both ends. In the drawing, the thread is not modelled, it is only shown as a block. For my analysis, I am not considering the thread as a failure point, only as a constraint.
I am fully constraining the part on the surface of the "block" of threads with a surface region that has no displacement in any direction. I am getting a stress concentration on the edge of the surface region.
I have two questions:
1. Is it possible to exclude the edge of the surface region in the results so I can ignore the constraint? It holds the part fine, but I don't want to show this area as a failure. Currently I am ignoring any high stress in this area, but I would rather not have it show up
2. Is there a better way to simulate threads in a simple fashion so that stress concentrations do not appear? I do not want to model the threads to apply this constraint, but I believe the issue is that I am limiting axial movment on a surface. Because the surface has no shoulder, it is difficult to model and singularities will happen.
The picture below shows the stress concentrations I'm talking about. Any help would be appreciated in constraining my part to get more accurate results. Thank you.
-Andrew
