50 Years of the K-BKZ Constitutive Relation for Polymers
Figure 5
Experimental data (symbols) and model predictions (lines) of shear viscosity, , first normal stress difference, , and elongational viscosity, , for two polymer melts: (a) LDPE melt at 160°C [45] and (b) HDPE melt at 190°C [46] using the K-BKZ/PSM model with the parameters listed in Table 1.
