This paper investigates the behavior of the Piezoelectric (PZT) Bimorph disc within a Direct Write Fabrication Process. A modified Continuous Inkjet Print (CIJ) method is utilized to deposit a variety of conductive nano particulate materials for building miniaturized devices that can sustain harsh environments. Typical example includes the fabrication of electronic devices that are subject to severe fluctuations to temperature gradients. The spatial and temporal complexity of the novel CIJ based microfabrication process necessitates a computational solution to complement its experimental development. The interaction of three fields namely; electrostatic, structural and fluidic in the CIJ head are captured within a single Multiphysics model. A fluid-structure interaction (FSI) algorithm is used to capture the interaction of the PZT disc with the ink media. The effects of input parameters such as pressure, frequency and voltage on the PZT disc displacement are studied. Further, their effects on the transient pattern of the PZT displacement are explained. The findings from this research can be utilized to control the PZT disc displacements which, ultimately can be used to obtain an optimized and consistent drop break up for high precision printing.
Multiphysics Modeling of a Piezoelectric Bimorph Disc in a Direct Write Fabrication Process
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Desai, S, & Lovell, M. "Multiphysics Modeling of a Piezoelectric Bimorph Disc in a Direct Write Fabrication Process." Proceedings of the ASME 2005 International Mechanical Engineering Congress and Exposition. Materials. Orlando, Florida, USA. November 5–11, 2005. pp. 437-442. ASME. https://doi.org/10.1115/IMECE2005-82214
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