Name of formula used for calculating "Thickness of Ellipsoidal Head under Internal Pr

[Charlie Pipe]

I used the formula for some design pressure calcs. I need to reference the formula for the project owner.

[rjm60]

There is no name for these general equations. I assume you are using equations for thin walleed pressure vessels, which are derived from the plane stress tensor equations.

Buy a copy of "Roark's Formulas for Stress and Strain". This is pretty much the bible for quick calculations and will give you a very respectable citing source for your equations.