Stress-Strain Calculator
Calculate engineering stress, strain, true stress, true strain, and elastic energy density for materials.
Input Values
10.00 kN
10.0000 cm² = 1000.00 mm²
Engineering Values
Stress (σ)
10.0000 MPa
Strain (ε)
0.100000%
Formulas:
Engineering: σ = F/A, ε = ΔL/L₀
True: σ_t = σ(1+ε), ε_t = ln(1+ε)
Energy: u = ½σε
Understanding Stress and Strain
Stress is the internal resistance of a material to an applied force, measured as force per unit area. Strain is the deformation of a material relative to its original dimensions. These quantities are fundamental to understanding how materials behave under load. Engineering stress and strain use original dimensions, while true stress and strain account for dimensional changes during deformation.
Types of Stress
Tensile Stress
Pulling force that tends to elongate the material
Compressive Stress
Pushing force that tends to shorten the material
Shear Stress
Force parallel to the surface causing angular deformation