Piecewise Linear Plasticity Calculator for Plastic Strain Hardening

⚠️ Important Disclaimer

This methodology does not improve calculation accuracy as it operates on very limited input data, which is insufficient for comprehensive nonlinear analysis. The methodology is designed to make the integration process numerically more stable by providing a smooth transition from elastic to plastic behavior.

Material Input Mode

Select Input Method:

Swift's Law Formula

σ = K(ε₀ + ε)ⁿ

where: σ - true stress, K - strength coefficient, ε₀ - initial strain, ε - plastic strain, n - hardening exponent

🔧 Units Settings

Unit System:

Young's Modulus, E:

MPa

Yield Strength, σ_y:

MPa

Ultimate Tensile Strength, σ_u:

MPa

Elongation at failure (Engineering), A:

Residual Plastic Strain, ε₀:

Cowper–Symonds Formula

DIF = σ_d/σ_s = 1 + (ε̇/C)^1/p

where: DIF - Dynamic Increase Factor, σ_d - dynamic stress, σ_s - static stress, ε̇ - strain rate, C & p - material constants

Material Class for Cowper–Symonds Strain Rate estimation:

Piecewise Linear Plasticity Calculator for Plastic Strain Hardening

⚠️ Important Disclaimer

Material Input Mode

Swift's Law Formula

🔧 Units Settings

Cowper–Symonds Formula

Additional Parameters for *MAT_PIECEWISE_LINEAR_PLASTICITY

Stress-Strain Curve

Strain-Stress Data Table