If a thick cylindrical shell is subjected to internal pressure, then hoop stress, radial stress and longitudinal stress at point in the thickness will be:

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BPSC AE Paper 6 (Mechanical) 25th March 2022 Official Paper
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  1. Tensile, compressive and compressive respectively
  2. All compressive
  3. All tensile
  4. Tensile, compressive and tensile respectively

Answer (Detailed Solution Below)

Option 4 : Tensile, compressive and tensile respectively
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Detailed Solution

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Explanation:

In thick cylinders, the thickness of the shell is sufficiently large that stress variation along the thickness is also important. 

In case of thick cylinders, due to internal pressure, the three principal stresses acting at a point are:

  • Radial stress which is compressive
  • Circumferential stress or hoop stress which is tensile, and
  • Longitudinal Stress which is also tensile
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