Building a Submarine-Like Structure: Materials & Thickness for a Given Volume

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SUMMARY

The discussion focuses on designing a submarine-like structure that maintains a constant volume under pressure, specifically at 5 to 6 atmospheres. It emphasizes that no material can passively maintain this volume, necessitating either an active structural integrity system or an allowance for deformation. The user is particularly interested in calculating the wall thickness of a steel structure to withstand these pressures while containing air at 1 atmosphere inside.

PREREQUISITES
  • Understanding of material science principles, particularly regarding pressure resistance.
  • Familiarity with structural engineering concepts, including wall thickness calculations.
  • Knowledge of atmospheric pressure and its effects on materials.
  • Basic grasp of active structural integrity systems and their applications.
NEXT STEPS
  • Research formulas for calculating wall thickness in pressure vessels, such as the ASME Boiler and Pressure Vessel Code.
  • Explore materials suitable for high-pressure environments, focusing on steel grades and their properties.
  • Investigate active structural integrity systems and their implementation in underwater structures.
  • Examine case studies of existing submarines and their design specifications for pressure resistance.
USEFUL FOR

Engineers, architects, and designers involved in underwater construction or pressure vessel design, as well as students studying material science and structural engineering.

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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?
 
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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.
 


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.
 

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