Gas-loaded Polymer Viscosity
Gas-loaded Polymer Viscosity
Path: Main menu > Material > Create gas-loaded Polymer…. Tab: Viscosity
Path: Main menu > Material > Edit Material (file)…. Tab: Viscosity
Figure: Tab Viscosity gas-loaded polymers
There is only one option to calculate the viscosity of a gas-loaded polymer in SIGMA. So, the Carreau function is preselected for the viscosity function.
Carreau:
$n = \frac{A \cdot a_T \cdot a_{gas}}{(1 + B \cdot a_T \cdot a_{gas} \cdot \dot{\gamma})^C}$
You can choose from different temperature dependence.
- WLF ($T_b, T_s$)
- WLF ($C_1, C_2$)
- Arrhenius
These different models for the temperature shift factor a_T are described in detail in subchapter rheological data.