How is thickness of plates used in pressure vessels calculated?

Question

How is thickness of plates used in pressure vessels calculated?

Answer 1

it is derived in any solid mechanics book for mechanical engineers.

Answer 2

I answered a similar question a few days ago, I will just paste it here. If you need more info, add a comment I will try to help

Use the relation

t = P * D / 2 * f * J

Height is irrelevant to the head thickness of the plate thickness, but the bottom plates will have to consider the pressure head.

Here, t = Thickness of the plate

P = Internal Operating Pressure (Design pressure to be taken 1.1 times the Operating Pressure)

f = Permissible Stress of the Material of Construction (Mild Steel, SS and other common MOCs have between 1000 -1800 kg/cm^2, this value is usually provided by the manufacturers of the plates)

J = Joint Efficiency (1.0 for Class A type, 0.85 for Class B, 0.5 - 0.75 for Class C types)

D = Mean Vessel Diameter

If you are going to use Internal Diameter the relation becomes

t = P * Di / 2 * f * J - P

Here Di = Internal Vessel Diameter

If you are going to use external Diameter

t = P * Do / 2 * f * J + P

Here Do = Outside Diameter of vessel