HYPERFIT

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Constitutive models

HYPERFIT software provides a lot of constitutive models to be fit. Number of isotropic/anisotropic, compressible/incompressible models is available. Each model typically contains a set of options providing its specific and detailed setting.

Hyperelastic models

ISOTROPIC MODELS:
    - Neo Hooke
    - Mooney-Rivlin
    - Klosner-Segal
    - Yeoh
    - Polynomial
    - Varga
    - Ogden
    - Van der Waals
    - Arruda-Boyce
    - Gent
    - Pucci-Saccomandi
    - Extended Tube
    - Veronda-Westmann
    - Demiray
    - Blatz-Ko (foam)
    - Hill-Storakers (foam)
    - Ogden (foam 1)
    - Ogden (foam 2)
ANISOTROPIC MODELS:
    - Fung
    - Choi-Vito
    - Polynomial
    - Holzapfel, 2000 (HGO model)
    - Holzapfel, 2005
    - Holzapfel, 2015 (double-dispersion)
    - Four-Fiber-Family
    - Gasser, 2006 (GOH model)
    - Microfiber (distributed fiber directions)
Note: - "Parallel" model is also available to combine most of the individual models.

Other models

VISCO-HYPERELASTIC:
    - Prony series
    - Bergstrom-Boyce
MULLINS EFFECT:
    - Ogden-Roxburgh
    - Kachanov
    - Miehe
    - Marckmann
VISCO-ELASTIC:
    - Prony series (lin.)
ELASTO-PLASTIC:
    - Ramberg-Osgood
    - Chaboche
CREEP:
    - Norton
PROBABILITY DENSITY FUNCTION:
    - von Mises (both 1D and 2D versions)
    - 2x von Mises (both 1D and 2D versions)