Deflection of Cantilever and Simply Supported Beams | Area-Moment Method

Cantilever Beam

Generally, the tangential deviation t is not equal to the beam deflection. In cantilever beams, however, the tangent drawn to the elastic curve at the wall is horizontal and coincidence therefore with the neutral axis of the beam. The tangential deviation in this case is equal to the deflection of the beam as shown below.
 

General representation of deflection of cantilever beams