Bending Stress Calculator

Simple Beam Bending Stress Equation

$$ \sigma = \frac{My}{I} $$ where:

σ = Bending Stress (N/m² or Pa)

M = Bending Moment (Nm)

y = Distance from neutral axis (m)

I = Moment of inertia of the cross section (m⁴)

Calculator

Property to Calculate:

Bending Stress (σ):

Bending Moment (M):

Distance from Neutral Axis (y):

Moment of Inertia (I):

Equation Assumptions

The material is linear elastic, i.e. it behaves according to Hooke's Law.
The material is homogeneous and isotropic.
The deformation of the beam is small, such that the geometry of the beam remains practically unchanged when under load.
The beam is under pure bending without axial or shear forces.