6
Thick Shells
CHAPTER OBJECTIVES
For low pressures, thin pressure vessels are used where D/t ratio is greater than 20. For high internal pressure as in the case of tubes used for high pressure gauge and bulk compression gauge, tubes with considerable thickness are used where D/t << 20. The objectives of this chapter are to make the students learn about:
Derivation of Lame’s equations for radial and circumferential stresses.
Variation of circumferential and radial stresses along the thickness of the shell.
There is large variation of hoop stress along the thickness of the shell. The maximum hoop stress cannot be more than the allowable stress; therefore, two cylinders are compounded.
How compressive hoop stress in inner cylinder and tensile ...
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