Journal
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
Volume 70-71, Issue -, Pages 428-444Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2015.09.006
Keywords
Piezoelectric; Electromagnetic; Vibration energy harvesters; Dimensionless force factor; Coupling loss factor; Statistical energy analysis
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This paper has disclosed the relationship of vibration energy harvester performance with dimensionless force factor. Numerical ranges of the dimensionless force factor have been defined for cases of weak, moderate and strong coupling. The relationships of coupling loss factor, dimensionless force factor, critical coupling strength, coupling quotient, electro-mechanical coupling factor, damping loss factor and modal densities have been established in linear vibration energy harvester systems. The new contribution of this paper is to determine a frequency range where the vibration energy harvesting systems are in a weak coupling and the statistical energy analysis is applicable. (C) 2015 Elsevier Ltd. All rights reserved.
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