- /MAT/LAW33 (FOAM_PLAS)
Block Format Keyword This law models a viscous-elastic foam material with unloading/reloading like plastic behavior. This law is applicable only for solid elements and is typically used to model low density, closed cell polyurethane foams such as impact limiters.
- /MAT/LAW34 (BOLTZMAN)
Block Format Keyword This law describes the Boltzmann (visco-elastic) material. This law is applicable only for solid, shell, truss and integrated beam elements and can be used to model polymers and elastomers.
- /MAT/LAW35 (FOAM_VISC)
Block Format Keyword This law describes a visco-elastic foam material using Generalized Maxwell-Kelvin-Voigt model where viscosity is based on Navier equations.
- /MAT/LAW38 (VISC_TAB)
Block Format Keyword This law describes the visco-elastic foam tabulated material and can only be used with solid elements.
- /MAT/LAW40 (KELVINMAX)
Block Format Keyword This law describes the generalized Maxwell-Kelvin material. This law can only be used with solid elements.
- /MAT/LAW42 (OGDEN)
Block Format Keyword This keyword defines a hyperelastic, viscous, and incompressible material specified using the Ogden, Mooney-Rivlin material models.
- /MAT/LAW62 (VISC_HYP)
Block Format Keyword This law describes the hyper visco-elastic material. This law is compatible with solid and shell elements. In general it is used to model polymers and elastomers.
- /MAT/LAW69
Block Format Keyword This law is an extension of /MAT/LAW42 (OGDEN) and defines a hyperelastic and incompressible material specified using the Ogden, Mooney-Rivlin material models.
- /MAT/LAW70 (FOAM_TAB)
Block Format Keyword This law describes the visco-elastic foam tabulated material. This material law can be used only with solid elements.
- /MAT/LAW77
Block Format Keyword This open cell foam material law is a generalization of LAW70. It accounts for a non-viscous compressible ideal gas flow inside of the foam and its interaction with the foam structure.
- /MAT/LAW82
Block Format Keyword This keyword defines the Ogden material. This law is compatible with solid and shell elements. In general it is used to model polymers and elastomers.
- /MAT/LAW88
Block Format Keyword This law represents the behavior of a hyperelastic material with strain rate effects. This law is generally used to model incompressible rubbers, polymers, foams, and elastomers. It is defined by a family of stress versus strain curves at different strain rates.
- /MAT/LAW90
Block Format Keyword This law describes the visco-elastic foam tabulated material. This material law can be used only with solid elements.
- /MAT/LAW92
Block Format Keyword This law describes the Arruda-Boyce material model, which can be used to model hyperelastic behavior.
- /MAT/LAW94 (YEOH)
Block Format Keyword This law describes the YEOH material model, which can be used to model incompressible hyperelastic behavior. This law is only compatible with solid elements.
- /MAT/LAW95 (BERGSTROM_BOYCE)
Block Format Keyword This law is a constitutive model for predicting the nonlinear time dependency of elastomer like materials.
- /MAT/LAW100 (MNF)
Block Format Keyword The multi network framework or MNF is used to model polymers and elastomers with nonlinear viscous behavior.
- /MAT/LAW101
Block Format Keyword This law is a time and temperature dependent material model for thermoplastic polymers using a thermodynamic approach with physically-based multiscale internal state variables. This law is only available for solid elements.
- /MAT/LAW111
Block Format Keyword Describes the Marlow material model, which can be used to model hyper elastic behavior. This law is only compatible with solid elements.