The visco-hyper-elastic material model is based
on the assumption of an additive decomposition of the stress
into hyper-elastic and viscous contributions. The model takes into
account strain-rate and temperature effects, effectively represents
strain hardening properties of PET. Coefficients used to characterize
the hyper-visco-elastic material properties are obtained by biaxial
stretching tests performed on the Brucker machine, available atthe
IMI-CNRC.
In this study, the ISBM process was simulated, in Blowview version
8.4 to examine the effect of preform temperature profile on
thickness and stress distributions in the bottle