Pendant liquid bridges are defined as pendant drops supporting
a solid axisymmetric
endplate at their lower end. The stability and shape properties of such
bridges are
defined in terms of the capillary properties of the system and of the mass
and radius
of the lower free-floating endplate. The forces acting in
the pendant liquid bridge are
defined exactly and expressed in dimensionless form. Numerical analysis
has been used
to derive the properties of a given bridge and it is shown that as
the bridge grows by
adding more liquid to the system a maximum volume is reached. At this maximum
volume, the pendant bridge becomes unstable with the length of the bridge
increasing
spontaneously and irreversibly at constant volume. Finally the bridge breaks
with the
formation of a satellite drop or an extended thread. The bifurcation and
breakage
processes have been recorded using a high-speed video camera with a digital
recording
rate of up to 6000 frames per second. The details of the shape
of the bridge bifurcation
and breakage for many pendant bridge systems have been recorded and it
is shown that
satellite drop formation after rupture is not always viscosity dependent.
Bifurcation
and breakage in simulated low gravity demonstrated that breakage was very
nearly
symmetrical about a plane through the middle of the pendant bridge.
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