Question

Calculate the circumferential stress on a thin-walled pressure tank that experiences an internal pressure of 4 MPa and external pressure of 2.5 MPa. The tank is 50 mm thick with a diameter of 200 mm.

• A. 3 MPa
• B. 30 MPa
• C. $$3 \times 10^5 Pa$$
• D. $$3 \times 10^4 Pa$$

Answer 1

Answer:

A. 3 MPa

Given: $P_{i} = 4MPa$ $P_{e} = 2.5MPa$ , $t = 50mm$ $d = 200mm$. $P = P_{i} - P_{e} = 4 - 2.5 = 1.5MPa$ :: $\sigma_{c} =\frac{Pd}{2t}=\sigma_{c} = \frac{1.5 \times 200}{2 \times 50} = 3MPa$