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What happens to the critical buckling pressure of a thin cylinder vessel when subjected to internal fluid pressure and torque?

66. What happens to the critical buckling pressure of a thin cylinder vessel when subjected to internal fluid pressure and torque?

1. Increases due to the additional torsional stress
2. Decreases due to the additional radial stress
3. Doubles due to the combined effects of pressure and torque
4. Remains unaffected by the presence of torque

Answer

The correct answer is: B) Decreases due to the additional radial stress

Explanation

The critical buckling pressure of a thin cylinder vessel decreases when subjected to internal fluid pressure and torque. The additional radial and torsional stresses induced by torque can weaken the vessel's resistance to buckling.