https://forums.autodesk.com/t5/inventor-forum/fea-results/m-p/5754758#M365843 <P>Thanks Rusty. &nbsp;I have tried convergence also...results get worse in my opinion. &nbsp;I've thought about modeling a large pipe connected to the nozzles to use as my constraint point to get it away from the nozzle. &nbsp;I think the problem lies in that it thinks there is a stress concentration there...when i'm just trying to check this for internal pressure.</P><P>&nbsp;</P><P>File attached.</P><P>&nbsp;</P><P>Internal pressure = 15,000 psi.&nbsp;</P><P>All nozzles will have a valve, flange, etc...welded to them.</P> Mon, 03 Aug 2015 16:37:59 GMT Anonymous 2015-08-03T16:37:59Z