How thick should the walls be?

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SUMMARY

The discussion focuses on determining the wall thickness of a hollow cylindrical casing under maximum internal pressure, utilizing the formula P = (2tSE) / (D - 2tY). Key variables include wall thickness (t), maximum allowable stress (S), material quality factor (E), wall thickness coefficient (Y), and outer diameter (D). The context is based on ASME B31.3 standards, emphasizing that the casing is a solid metal structure with a hollow cylindrical hole. The minimum thickness required for the casing to withstand specified pressure is derived from these parameters.

PREREQUISITES
  • Understanding of ASME B31.3 standards
  • Knowledge of material stress and strain concepts
  • Familiarity with cylindrical shell theory
  • Basic grasp of pressure vessel design principles
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  • Research the implications of material quality factor (E) in pressure vessel design
  • Study the effects of wall thickness coefficient (Y) on structural integrity
  • Explore advanced calculations for hollow cylindrical structures under pressure
  • Learn about safety factors in pressure vessel design according to ASME standards
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Mechanical engineers, pressure vessel designers, and materials scientists involved in the design and analysis of hollow cylindrical structures under pressure.

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if there is a hollow cylinderical hole with maximum internal pressure P in a hollow casing which is likw a cylindrical shell, how do we get how thick the walls will be?
 
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P=[tex]\frac{2tSE}{D-2tY}[/tex]

Where:

t = wall thickness
S = Maximum allowable stress
E = Material Quality Factor
Y = Wall thickness coefficient
D = Outer diameter

At least, that is according to http://www.pumpfundamentals.com/applets.htm#problems_viewing

That is according to ASME B31.3
 
i think you misunderstand. it is not a pipe. the casing is solid metal and the only part that is hollow is the cylindrical hole, perpendicular to the plane of the shell. now, what is the minimum thickness required for the casing to withstand a given pressure, when we know the inner radius of solid shell, and radius of hollow cylidrical hole.
 

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