PPolySim OS

Stress-Strain Curve

Pull a material apart and its stress-strain curve reveals everything — stiffness, strength, and whether it stretches or snaps.

Stress-Strain CurveLive

Controls

Presets

Pull on a material and its stress-strain curve tells its story: a straight elastic region with slope equal to Young's modulus, a yield point where permanent deformation begins, a peak at the ultimate tensile strength, and finally fracture. Ductile metals stretch far; brittle ones like cast iron snap with almost no warning.

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Data Inspector

Young's modulus200 GPa
Current stress294 MPa
UTS400 MPa
Regionplastic

Governing equation

Reading this result: Past yield (250 MPa): Mild steel is deforming permanently and hardening toward its 400 MPa ultimate strength.

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How it works

The stress-strain curve from a tensile test shows a linear elastic region whose slope is Young's modulus, a yield point where permanent deformation starts, a peak at the ultimate tensile strength, and fracture. Ductile metals deform greatly before breaking; brittle materials fail suddenly with little warning.

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Frequently asked questions

Is this stress strain curve tool really free?▾
Yes. Stress-Strain Curve runs entirely in your browser using your device's own compute, so local use is free forever. You only pay Compute Tokens if you scale a job to the cloud.
Do I need to install anything?▾
No. Everything runs client-side in a modern browser — no downloads, no license, no account required to start.
Can I save or share my simulation?▾
Create a free account to save projects, and use a shareable embed or minted DOI to publish a live, interactive version anywhere.
How accurate are the results?▾
The solver uses established numerical methods, but results are for research and educational purposes and should be validated against experiment or professional review before you rely on them.