Ongoing Work II: Rupture
If this movie does not display, please download directly from
For weakly strain-hardening materials, filament may fail through a viscoelastic ‘necking’ & rupture process.
- Ductile elastic instability (not driven by surface tension).
- Strongly stabilized by chain-branching...
Considère criterion (1885) for stability (De >> 1)
- A decreasing force is a necessary but not sufficient condition for observing rapid necking!
- Key role of ‘viscous’ terms in polydisperse melts and conc. solutions .