AIEngineeringTool

Beam Bending Stress Calculator

Calculate nominal bending stress from moment and section modulus.

Maximum bending moment: 25 kN·m
Live concept view — geometry scales with the entered design condition.

Calculate nominal bending stress from moment and section modulus.

Design inputs

Enter known values using the units shown. Results and the live SVG view update immediately.

PRELIMINARY RESULT

Nominal bending stress100.00 MPa
Nominal bending stress
100.00 MPa

Calculation detail

Formula: σ = M / Z

Bending moment is converted to N·mm and divided by the elastic section modulus.

FORMULA VERIFICATION

Units, scope and reference

Reference: Elastic flexure formula σ = M/Z; standard strength-of-materials reference.

Internal unit basis: N·mm, mm³. Outputs: MPa.

Valid conditions: Positive elastic section modulus and stated peak moment.

Limitations: No reactions, deflection, buckling, connections or load combinations.