5.15 Pure Bending of a Beam

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Beam is acted on by forces or couples causing it to primarily bend. There are two forces along the longitudinal axis.

       Bar                                              Bar/Shaft

          (Stretching/shrinking)                                (Rotation)

Beam (primarily Bending)

Pure bending results from the application of pure end couples. There are no shear forces. 

Pure bending results in a  constant curvature.

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