Engineering
Basic

Stress

Internal force per unit area in a material.

Formula

σ=FA\sigma = \frac{F}{A}

Variables

FForce
ACross-sectional area

Example

A 1000 N load on a 0.01 m² bar produces σ = 1000/0.01 = 100 kPa.

Did You Know?

Engineers deliberately design bridges and buildings to keep stress far below the material's breaking point.

mechanicsstressmaterial