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Select Areas to be meshed with a Quad shape using the Free mesher. Click Mesh. Pick the front face of the crank and the pedal shaft.  Image Added
 
Click OK. You will now see: Image Added
You'll get the following warning: Image Added
Image Removed  
The specified smart size 4 and edge length of 0.12 are the result of a iterative process. ANSYS uses a sizing algorithm that creates smaller mesh elements in areas of potentially high stress concentration (e.g. curved regions) to improve solution accuracy. Selecting a smaller (finer) smart size will decrease element size close to the cutout curves. Specifying an edge length provides a uniform size for the rest of the area being meshed. In this case, since the material above and below the cutout act as beams, we want at least two mesh elements in the vertical direction. Feel free to experiment with the mesh tool parameters.

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