Gibson-Ashby & Deshpande-Fleck Models for Cellular Foams

Gibson-Ashby & Deshpande-Fleck Models

E*/Es = C₁(ρ*/ρs)²
σ*/σs = C₃(ρ*/ρs)^1.5
σ(ε) = σpl[1 + H(ε - εy)]
where: E* - foam elastic modulus, Es - solid elastic modulus, σ* - foam plateau stress, σs - solid yield strength, ρ*/ρs - relative density, C₁, C₃ - material constants
Deshpande-Fleck: H - hardening coefficient (0 = pure plateau, >0 = hardening slope)

Units Settings

kg/m³
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