Droplet formation in inkjet cartridges has been studied for several
decades to improve print qualities. Currents and rigid nozzle plates are used
inside the cartridge to fix the size of droplets exiting the chamber. This
research is focused on studying the effect of nozzle flexibility on droplet
formation. A flexible nozzle can be modeled as an flexible annular plate with
a clamped outside edge.
In this thesis, plate vibration equations are studied for an annular
shape. An analytical solution is formed for the small deflection plate equation.
To solve the large deflection plate vibration equation, Galerkin's method is
used. Droplet formation is predicted by a one dimensional fluid dynamic
model. An integrated plate vibration and droplet formation model is created
with these basic building blocks. Results from simulation indicate flexible
plates yield shorter droplet breakoff time and longer breakoff distance while
generating a slightly droplet compared to a rigid nozzle. / Graduation date: 2004
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/30057 |
| Date | 29 August 2003 |
| Creators | Sangplung, Saangrut |
| Contributors | Costello, Mark F. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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