Question

A thick cylinder is subjected to an internal pressure of 60 MPa. Hoop stress on the outer surface is 150 MPa. Hoop stress on the internal surface is

• A. 105 МРа
• B. 180 MPa
• C. 210 МРа
• D. 135 MPa

Answer 1

Answer:

C. 210 МРа

Given: $( \sigma_h )_{out} = 150MPa$ , $P = 60MPa$ Hoop stress on the internal surface is given by: $(\sigma_h )_{out} =( \sigma_h )_{in} -P \Rightarrow 150=( \sigma_h )_{in} -60 \Rightarrow( \sigma_h )_{in} = 210MPa$.