Study on effective piezoelectric coefficient for finite element analysis of multi-layer ceramic capacitor

Byung-Han Ko,Dongjoon Kim,No-Cheol Park,Young-Pil Park

Applications of Ferroelectric, International Symposium Integrated Functionalities and Piezoelectric Force Microscopy Workshop（2015）

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摘要

Effective piezoelectric coefficient for finite element method of multi-layer ceramic capacitor was calculated in this study considering three factors; reduction ratio of the number of layer in finite element model, electrostriction, and applied DC voltage. Fundamental and second harmonic frequency of vibration response was measured when MLCC is operated under sinusoidal AC voltage and various DC voltage. Vibration measurements were separated into piezoelectric and electro-strictive vibration. Using finite element analysis, piezoelectric and electrostrictive coefficients were calculated and effective piezo-electric coefficients were also calculated.

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关键词

ceramic capacitors,electrostriction,finite element analysis,piezoceramics,piezoelectric devices,piezoelectricity,vibrations,DC voltage,effective piezoelectric coefficient,electrostrictive vibration,finite element method,fundamental harmonic frequency,layer number reduction ratio,multilayer ceramic capacitor,piezoelectric vibration,second harmonic frequency,sinusoidal AC voltage,vibration measurements,electrostriction,finite element analysis,multi-layer ceramic capacitor,piezoelectricity

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