Details of shear force and bending moment & their diagrams

As the direction of the load is downward and the beam is supported at two ends there are possibilities for the beam to split into two parts. This splitting of the beam in two parts is known as shearing of beam where the beam is divided into two parts and it is known as the shearing action of the beam. The force liable to shield the beam is known as the shear force.

In another diagram it is show that the beam is bending rather than splitting due to load acting on it. It is known as bending moment.

The shear force is abbreviated as SF and bending moment as BM.

In the video a diagram is drawn for a horizontal beam that is supported at its two end. Both the ends are represented as A and B. The length of the beam is demonstrated as L. Suppose there is load called as W that is operating downward on this beam. It is a single load but there may be more than one load on the beam.

Go through the following video tutorial to get some diagrammatical representations which indicate at which point the beam will shear and at which point the beam will bend.