In the movie Avatar, the greedy corporation masquerading as a human being, aka P

Question

In the movie Avatar, the greedy corporation masquerading as a human being, aka Parker Selfridge wants to rid the planet Pandora of all leaf-bearing pests and the "tree huggers" that call them home. Unfortunately, Parker may have poorly designed the closed-end, cylindrical pressure vessel for his monster "Ieveler" that will do the work. Help spread Human Glory by using MSST to determine if the vessel will yield based on for internal pressures of: (a) 1,500 psi, (b) 2,000 psi, and (c) 2,500 psi. Assume a mean diameter of 8.0 inches, a wall thickness of 0.2 inches, and a tensile yield strength o,= 40,000 psi (AISI 303 stainless steel).

Explanation / Answer

c)

Shear stress on the walls of the vessel = P*r/t = 2500*4/0.2 = 50000 psi

This is greater than the tensile yield stress of 40000 psi.

The vessel will yield for a pressure of 2500 psi.

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