Equilibrium and Elasticity - Theory & Concepts - Elasticity Stress Strain

A comprehensive overview of Equilibrium and Elasticity, covering static equilibrium, stress, strain, and material deformation.

Open the complete lesson

Interactive engineering simulation

Tensile Specimen & Stress-Strain Curve

Apply axial tensile force on a specimen. Observe Hooke's Law in the linear elastic region, and the horizontal curving path representing plastic flow beyond the yield threshold.

Elastic Region

Material Preset

Axial Tensile Force (P)35 kN

1–200

Drag for exploration or enter an exact value. Press Enter to apply; Escape restores the current value.

Cross-Section Area (A)250 mm²

mm²

50–1500

Drag for exploration or enter an exact value. Press Enter to apply; Escape restores the current value.

Young's Modulus (E)200 GPa

GPa

20–220

Drag for exploration or enter an exact value. Press Enter to apply; Escape restores the current value.

Yield Strength (σ_y)250 MPa

MPa

80–500

Drag for exploration or enter an exact value. Press Enter to apply; Escape restores the current value.

Governing Formulas

Normal Stress

\sigma = \frac{P}{A}

Hooke's Law (Elastic Strain)

\epsilon = \frac{\sigma}{E} \quad (\sigma \le \sigma_y)

Normal Stress (σ)

140.0 MPa

Strain (ε)

7.000e-4

Deformation Mode

ELASTIC

Model scope and verification

Use the displayed units and idealizations, then verify the governing balance or compatibility equation before interpreting the result.

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