4 - Thin walled pressure vessels Flashcards
1
Q
Cylindrical Vessels
A
- Subjected to loading from all directions when the vessel is pressurised
- The cylindrical vessel has a wall thickness (t) and inner radius (r) and subjected to a gauge pressure (p)
- Thin wall refers to a vessel having an inner radius to wall thickness ratio of 10 or more (r/t ≥10).
- When the vessel is “thin” the stress distribution throughout its thickness will not vary significantly and so we assume that it is uniform or constant
- Loading is uniform
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2
Q
Hoop Stress - Cylindrical Vessels
A
3
Q
Longitudinal Stress - Cylindrical Vessels
A
4
Q
Hoop stress and logitudinal stress relatioship
A
Hoop stress is twice as large as the longitudinal stress
5
Q
Hoop Stress - Spherical Vessels
A
6
Q
Hoop Srtess - End plates/joints
A
7
Q
Logitudinal Stress - End plates/joints
A
8
Q
Hoop stress - effect of end plates/joints - Spherical
A
9
Q
Factor of Safety
A
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