A shaft is made of a polymer having a parabolic upper and lower cross section. If it resists a moment of M = 125 N · m, determine the maximum bending stress in the material (a) using the flexure formula and (b) using integration. Sketch a three-dimensional view of the stress distribution acting over the cross-sectional area. Hint: The moment of inertia is determined using Eq. A€“3 of Appendix A.

Transcribed Image Text:

100 mm y = 100 – z2/25 M = 125 N m 50 mm 50 mm