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Question: problem 1 a closed thin walled cylindrical pressure vessel...

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Problem #1 : A closed, thin walled cylindrical pressure vessel of mean diameter d= 250 mm and wall thickness t-5 mm is subjected to an internal pressure pi 2.8 MPa, a torque (along its longitudinal axis) of T-31.36 kN-m, and an axial thrust (in tension) of F= 45 kN. The ultimate strengths of the material are συτ_ 210 MPa (in tension) and ơUC-500 MPa (in compression). a) Use the maximum principal stress criterion to determine if the tube will fail by fracture. b) Use the Mohr-Coulomb criterion to determine if the tube will fail by fracture c) Assume that the value of the torque T was not given. Use the maximum principal stress criterion to determine the critical value T at which the tube would just fail. (Use all other parameter values given above.) d) Assume that the value of the torque T was not given. Use the Mohr-Coulomb criterion to determine the critical value of T at which the tube would just fail. (Use all other parameter values given above.)

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