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Strength of materials- Thick walled cylinders
14
importance
usually subjected to high pressure and temperatures which can be constant or cycling
it can occur ductile fracture due to some discontinuity in geometry or material characteristics
they are pressured internally and/or externally
types of stresses
both internal and external pressured thick-walled cylinders
internal pressured only thick-walled cylinders
external pressured only thick-walled cylinders
the difference between a thincylinder and a thick one is that a thick cylinder has a stress in the radial direction, as well as a hoop stress and an axial stress
radial stress becomes important when the wall thickness exceed 1/20 of the diameter
chemical industry
oil and gas
military service
nuclear power plants etc
external pressure only
Thick-walled cylinders
+ for circumferential stress
- for radial stress
if the ends of the cylinder are capped, we must include longitudinal stress
internal pressured only
circumferential (hoop stress)
radial stress
longitudinal stress
+ for circumferential stress
- for radial stress