Multiphysics simulations in MEMS piezo inkjet unit design

The complex physics in inkjet units is investigated with different simulation types at increasing level of complexity. The analyses types vary from static analyses on the actuator, via modal and harmonic analysis up to transient analysis on a complete unit with all involved physics and appropriate two-way couplings in the modeling. The modeling is used for design optimization, tolerance analysis and gathering increased insight in the inkjet unit behavior.

Multiphysics simulations in MEMS piezo inkjet unit design

A MEMS inkjet chip contains a large number of units. Each unit contains a piezo actuator, a pressure channel and a nozzle for ejecting  the droplets.

All units are independently electrically actuated by an applied voltage. The electrostatic field causes a deformation of the piezoelectric material which in turn results in pressure waves and flow in the underlying unit filled with ink. The free surface at the nozzle end moves and a droplet leaves the nozzle.

Infinite has a long term experience with analyses in this field in cooperation with a major printer manufacturer.

 

 


Infinite Simulation Systems B.V.

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