Shear Force and Bending Moment Diagrams

Shear force and bending moment diagrams are tools engineers use to understand how a beam responds under load. The shear force diagram shows how internal forces that cut through the beam vary along its length, indicating where the beam might tear or slide. The bending moment diagram shows how the beam twists or bends under load, highlighting points of maximum stress. Together, these diagrams help designers ensure beams can withstand expected forces safely and efficiently, guiding where supports, reinforcements, or design adjustments are needed for structural integrity.