HyperXtrude supports six different models to describe the constitutive behavior of polymers. The material models available in HyperXtrude are:

• | Spriggs truncated power law model |

All these models use the effective shear rate of the flow field to compute the dependency of viscosity on the shear rate. Viscosity, besides being a strong function of the shear rate, also depends on the temperature of the material. HyperXtrude has five different functions to describe the temperature dependency and it can be used in conjunction with the models mentioned above. These functions are:

The following sections describe the details of the models with data syntax and examples.

Power Law Model

Spriggs Truncated Power Law Model

Carreau Yasuda Model

Cross Model

Modified Cross Model

Herschel Bulkley Model

Temperature Dependence