Understanding Stresses in Beams

In this video we explore bending and shear stresses in beams. A bending moment is the resultant of bending stresses, which are normal stresses acting parallel to the beam cross-section. We can easily derive an equation for these bending stresses by observing how a beam deforms for a case of pure bending. This equation is know as the flexure formula. Next we look at shear stresses, which act parallel to the beam cross-section, and can be represented by a shear force. These vertical shear stresses can cause