Stress From Bending Moment Calculator

Bending moment stress is the internal stress that occurs in a beam when it bends under a load. It is proportional to the bending moment and the distance from the neutral axis, and inversely proportional to the beam’s moment of inertia.

Wiratama

11/7/20251 min read

Bending Moment Stress

The equation for bending stress (σ) is derived from the bending moment (M) and is given by:

σ = M⋅y / I​

where:

  • σ = Bending stress

  • M = Bending moment

  • y = Distance from the neutral axis to the point where stress is calculated

  • I = Moment of inertia of the cross-sectional area

This equation shows that bending stress is directly proportional to both the bending moment and the distance from the neutral axis, and inversely proportional to the moment of inertia.