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Question:
A thin cylinder of 3m diameter is subjected to an internal pressure of 2.5MN/m^2. Using a factor of safety of 2.2 and a yield stress of 300MN/m^2, calculate the wall thickness based on the
a) Tresca
b) von-Mises yield criteria
Answer:
We know:
Hoop Stress:
Longitudinal Stress:
Tresca stress model
As both stress values are positive, the second stress figure is set to zero to comply with Tresca Yield Criteria:
Von-Mises:
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