Energy Harvesting in a Nonlinear Cantilever Piezoelastic Beam System Excited by Random Vertical Vibrations

被引:13
|
作者
Borowiec, Marek [1 ]
Litak, Grzegorz [1 ]
Friswell, Michael I. [2 ]
Adhikari, Sondipon [2 ]
机构
[1] Lublin Univ Technol, Dept Appl Mech, PL-20618 Lublin, Poland
[2] Swansea Univ, Coll Engn, Swansea SA2 8PP, W Glam, Wales
关键词
Mechanical vibration; wideband; energy harvesting; nonlinear; piezoelectric transducer; STOCHASTIC RESONANCE; EXCITATION; DRIVEN; MASS;
D O I
10.1142/S0219455414400185
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The vertical elastic beam with vertical ambient excitation is proposed as an energy harvester. The beam has a tip mass and piezoelectric patches which transduce the bending strains induced by the stochastic force caused by vertical kinematic forcing into electrical charge. We focus on the region with a fairly large amplitude of voltage output where the beam overcomes the potential barrier. Increasing the noise level allows the transition from single well oscillations to inter-well stochastic jumps with more power generation.
引用
收藏
页数:13
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