| Practice Problem 4-2 |
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Given: A thin walled spherical pressure vessel with radius 3.0 m is subject to an internal pressure of, 220 kPa. The maximum allowable stress in the pressure vessel is 100 MPa. Req'd: Determine the minimum wall thickness, t [mm]. |
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Solution: The relation for stress and pressure of a spherical pressure vessel is: s = pR/2t Solving for t gives: t = pR/2s = [(0.22 MPa)(3000 mm)]/[(2)(100 MPa)] = 3.30 mm |
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