4. Spherical Shells

Try these first

1. 1.

   What does p stand for in the stress formula for spherical shells?

   Hint

   Look at what is exerted inside the shell.

2. 2.

   What is a key benefit of using spherical shells for pressure storage?

   Hint

   Think about how stress distribution works.

3. 3.

   What does the stress formula for a spherical shell calculate?

   • Total weight
   • Internal pressure
   • Stress

   Hint

   Consider what you are trying to find with the formula.

4. 4.

   True or False: The stress in a spherical shell is uniform under internal pressure.

   • True
   • False

   Hint

   Think about how pressure affects materials.

5. 5.

   A spherical tank with a radius of 5 m and wall thickness of 0.2 m is subjected to an internal pressure of 1500 Pa. Calculate the uniform stress experienced by the shell.

   Hint

   Make sure to review the calculation steps and units.

6. 6.

   Discuss why spherical shapes are preferred in pressure vessel design over other geometric shapes.

   Hint

   Consider other shapes' weaknesses.