Chapter 4 Pressure vessels

4.1 Thin-walled pressure vessels

When a thin-walled pressure vessel is subject to internal pressure, three mutually perpendicular principal stresses are set up in the vessel material. These are the hoop stress (often referred to as the circumferential stress), the radial stress and the longitudinal stress. Figure 4.1 shows a vessel subject to internal pressure and the nature of the resulting hoop, longitudinal and radial stresses.

We may define a thin-walled pressure vessel as one in which the ratio of the wall thickness to that of the inside diameter of the vessel is greater than 1:20, that is less than the fraction ...

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