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I am working on a design project (school work, nothing too important) and I'm trying to wrap my head around how to analyze potential failure in a shaft with an applied tensile load at one end and a torque near the midpoint. (The beam is fixed at the other end.) The tensile force is an axial load. http://imgur.com/BeA0e.png"

Looking at the Von Mises equation, things simplify down to a single normal stress in the axial direction and a singe shear stress.

What I'm not sure about is the portion of the beam beyond the point where the torque is applied. I understand that the shaft does not continue to twist beyond this point, but is there still a shear stress in this portion of the shaft? If the answer is no, as I suspect it might be, the effective stress given by the von mises equation simplifies to the single normal stress in the x-direction.

Thanks for the help, sorry if this should have been posted in the mech. eng. section.

Scott

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# Homework Help: Normal/Shear stress & Von Mises analysis

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