The values of the material constants used in the passive, active, and electrical constitutive laws discussed in the following sections were initially set to those in the cited references; however, several values were modified during the model validation process to obtain quantitatively realistic (i.e., physiologically observed) behavior.
The modified values are encrypted; however, you can override any of the values. See Tools for Modifying the Model for information about running the Heart Model after making changes to the material properties.
The material name for the mechanical analysis should use “ABQ_CARDIAC_TISSUE_HYBRID-” as the leading string. Furthermore, the material behavior of any region of the model can be entirely replaced with any of the Abaqus built-in constitutive laws, or with your own constitutive laws defined using user subroutines. Details on both approaches can be found in the Abaqus Materials Guide.