Bending Stress Induced By Point Loads

Shear force or shearing forces can be defined as a force that acts on a body/material (commonly seen in beam designs) where the force acts in one direction, and an internal force acts in the opposite direction.

This resultant internal force keeps the beam/body in equilibrium (i.e, applied force on beam is equal to the internal shear forces in the beam).

A bending moment is the reaction induced in a structural element when an external force or moment is applied to the element, causing the element to bend. The most common or simplest structural element subjected to bending moments is the beam.