von mises versus safety factor

[Anonymous]

Having recently analysed a spherical vessel with supporting feet  von mises stress is nil,when i look at the safety factor particulary around the footplate fixing holes the fos is virtually non existent,surely this is a contradiction.

At present there are three forces and three moments presumably acting simultaneously,is this confusing the analysis.

Any suggestions please.

[Mark.Lancaster]

You may want to indicate the version of Inventor you are using and also indicate you are up to date on service packs and etc...  Show screenshots or create an Autodesk Screencast (https://knowledge.autodesk.com/community/screencast) showing your information.   "At present there are three forces and three moments presumably acting simultaneously,is this confusing the analysis"   This could mean anything without knowing how you set things up.