with what materials a strenght can a constant volume be kept under water pressure?

6MDM

I´m trying to find approx. numbers or formulas for a submarine like structure to mantain a constant volume. For a given volume, which materials and to what thickness should the container be?

russ_watters

No material can [passively] maintain a constant volume under pressure. You'll have to either design an active structural integrity system or decide how much deformation is allowable.

6MDM

Even when talking about 3-6atm´s? Understandable that everything has it´s limits. I´m looking at for example: a steal structure and trying to find a formula to estimate the wall thickness, considering there would be let´s say 6 atm´s of pressure or let´s say five to make the math easier. Thanks for your reply! Oh, and the gas inside would be air at 1atm.