Stress-Strain Curve & Material Nonlinear Models is an interactive online tool designed for generating and comparing stress-strain curves for a range of materials, including steel, aluminum, titanium, cast iron, rubber, and concrete. It provides real-time visualization of σ–ε (stress–strain) curves, enabling users to explore the mechanical behavior of these materials under different conditions.
The tool supports multiple nonlinear material models, specifically Ramberg-Osgood, bilinear (isotropic hardening), and power-law hardening (Hollomon). Users can select from preset materials such as Structural Steel (A36), Aluminum Alloy (6061-T6), Titanium Alloy (Ti-6Al-4V), Cast Iron (ASTM A48), Hyperelastic Rubber, and Concrete (with a specified compressive strength), or define custom material parameters. Key mechanical properties like Young's modulus, yield stress, ultimate strength, hardening exponent, and fracture strain can be input or adjusted to tailor the simulations.
A notable feature is the ability to overlay and compare different material models side by side, facilitating direct visual comparison of their responses. The platform also offers a live tensile test animation, displaying both the specimen and the evolving stress–strain curve in real time, with controls to pause and restart the simulation. Calculated results include values for Young's modulus, yield strength, ultimate tensile strength, fracture strain, resilience, and toughness, as well as the tangent modulus at any given point.
The tool is delivered as a free online resource and includes theoretical explanations and key formulas related to the supported material models. It is positioned as a physics simulation platform focused on material mechanics, suitable for those seeking to understand or teach the nonlinear behavior of engineering materials.
In the Education & learning space, Stress-Strain Curve & Material Nonlinear Models takes a focused approach. It focuses on understanding and visualizing the mechanical behavior of materials through interactive stress-strain curve simulations without specialized software. Stress-Strain Curve & Material Nonlinear Models is a consumer product aimed at engineering students. Stress-Strain Curve & Material Nonlinear Models costs nothing to use. The product ships for the web.
It is developed by NovaSolver (Japan), and the product first shipped in 2026. The project is developed in the open on GitHub with 7 commits in the last 90 days. Among its 8 catalogued features are interactive curve generator, material presets, and nonlinear model comparison. The interface is available in English, Japanese, and Chinese.
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