A thin-walled vessel is subject to an internal pressure of 245.43bar

and an external positive torque (Right Hand Rule) of 3510Nm.

The vessel wall-thickness is 4mm and its external diamter is 279mm.

The vessel is made from a ductlie metal with a Yield Strength of 526.76MPa, Using clockwise positive polar co-ordinates:

Determine for an element of stress on the external surface:

the Maximum in-plane Principal Stress (Answer in MPa only).

the Minimum in-plane Principal Stress (Answer in MPa only).

the Tresca in-plane Effective Stress (Answer in Pa only).

the von Mises in-plane Effective Stress (Answer in MPa only).

the Maximum in-plane Shear Stress (Answer in Pa only)

Select the 5 correct answers from the list below/: