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eng.stress-strain Calculator
Calculates stress, strain, and modulus of elasticity from material test data, and plots the stress-strain curve parameters. The slope of the linear elastic portion of the stress-strain curve is Young's modulus — the fundamental stiffness property of any solid material.
Inputs
F
Push or pull (N). F = ma. Net force determines acceleration. Account for all forces including gravity and friction.
A
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
Dl
Reference formula or conversion factor shown for context.
L0
Linear measurement. Ensure consistent units: 1 m = 1,000 mm = 3.281 ft.
Results
stress (MPa)
Internal force per unit area (Pa or MPa). Must stay below yield strength in service. Beyond yield: permanent deformation. Beyond tensile strength: fracture.
strain (dimensionless)
Fractional deformation: change in length / original length. Elastic strain is fully recoverable; plastic strain is permanent. Plotted vs. stress on a stress-strain curve.
Young modulus (GPa)
Sample size or count used in the calculation.
safety factor vs 250MPa
A dimensionless multiplier applied in the calculation.
adequate?
Whether the computed capacity, strength, or resource meets the minimum requirement.
Hooke law
Reference formula or conversion factor shown for context.