Journal Article10.1177/1045389X07084204
Modeling and Numerical Analysis of a Circular Piezoelectric Actuator for Valveless Micropumps
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TL;DR: In this paper, an analytical equation for analyzing the deflection of multi-layer piezoelectric structure is derived based on the electro-elastic theory and the thin plate theory.
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Abstract: This article investigates mechanical behavior of a circular piezoelectric actuator for valveless micropumps. An analytical equation for analyzing the deflection of multi-layer piezoelectric structure is derived based on the electro-elastic theory and the thin plate theory. We assume that the distribution of electric potential along the thickness direction is governed by the square law to satisfy the Maxwell static electricity equation. The validity of the proposed analytical model is further studied by using the ANSYS software. Furthermore, the effects of the dimensions and material properties of a multi-layer piezoelectric structure on its deflection are analyzed for optimal design of the actuator. The simulation results show that the thickness ratio of the piezoelectric layer and the passive plate in the multi-layer structure can be optimized to obtain the largest deflection. The important design parameters of the piezoelectric actuator, such as the passive plate properties and material, and the piezoel...
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Citations
Piezoelectric micropumps: state of the art review
TL;DR: This paper comprehensively reviews the studies that bring innovations in the literature of piezoelectric micropumps and enables researchers a useful reference on pieZoelectrics micropump parameters such as modeling, flow rate, shape control, geometry, and size optimization for key engineering applications.
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Design of ideal circular bending actuators for high performance micropumps
TL;DR: In this article, the authors investigated the ideal geometry and material parameters of piezo-driven axisymmetric unimorph actuators for micropump applications and derived closed form expressions for the transverse and radial displacement under diverse loads.
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A theoretical solution of resonant circular diaphragm-type piezoactuators with added mass loads
Yuanlin Hu,Xin Liang,Wen Wang +2 more
TL;DR: In this paper, a theoretical solution is formulated to analyze the vibration behaviors of circular diaphragm-type piezoactuators based on the Hamilton's principle and Rayleigh-Ritz method, which are particular suitable for modeling the deflection of multilayer structures.
References
A Review on the Modelling of Piezoelectric Sensors and Actuators Incorporated in Intelligent Structures
TL;DR: In this article, the authors present an overview of the modelling that has been proposed by various workers in the field of smart or intelligent structures, and present the main objective of this article.
322
A Valve-Less Diffuser Micropump for Microfluidic Analytical Systems
TL;DR: The results show that the valve-less micropump successfully pumps fluids within the viscosity range 0.001–0.9 Ns/m2 and is self-priming and insensitive to particles and bubbles present in the pumped media.
229
Analytical analysis of a circular PZT actuator for valveless micropumps
Shifeng Li,Shaochen Chen +1 more
TL;DR: In this paper, a linear strain distribution is assumed across the thickness of the passive plate of the lead zirconate titanate (PZT) actuator given that the mechanical properties such as Young's modulus and Poisson ratio of the actuator and passive plate are close.
Optimization of a circular piezoelectric bimorph for a micropump driver
TL;DR: In this paper, a finite element method was used to optimize the deflection of a circular bimorph consisting of a single piezoelectric actuator, bonding material and elastic plate of finite dimensions.
144
Optimal design of piezoactuators for active noise and vibration control
S. J. Kim,James D. Jones +1 more
TL;DR: In this article, a generalized approach for the optimization of piezoactuator/substructure coupling is studied, and the effective bending moment induced by twin, rectangularly shaped piezactuators surface-bonded to the upper and lower surfaces of a thin, flat plate is estimated from a static analysis of the composite structure.
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