crack orientation in a shaft, rotating bending+static torque
crack orientation in a shaft, rotating bending+static torque
(OP)
I'm looking for a way to predict the crack propagation direction in a shaft with static torque and a rotating bending moment.
Thanks
Thanks





RE: crack orientation in a shaft, rotating bending+static torque
RE: crack orientation in a shaft, rotating bending+static torque
Fatigue cracks always grow under tensile stresses.If I were you I would start by working out my maximum principle stresses using a Mohr circle and there orientation on your shaft, once you have the orientation and size of the maxium principle stress then you can start to consider fatigue.
Fatigue cracks grow at 90 degrees to the tensile stress.
hope this helps
regards Desertfox
RE: crack orientation in a shaft, rotating bending+static torque
For example: if you have splines, you have logitudinal bending plus spline tooth bending plus spline root concentration plus torsional stress to enter into your Mohr's circle analysis.