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Transverse Vibration Energy Harvesting of Double Elastic Steel
International Journal of Structural Stability and Dynamics ( IF 3.6 ) Pub Date : 2021-04-16 , DOI: 10.1142/s0219455421501133
Yi-Ren Wang, Chien-Chun Hung, Jung-Ting Tseng

This study uses the piezoelectric technology to collect vibration energy from the fixed-fixed nonlinear elastic beams attached with the piezo-patch between the two ends. Both single elastic steel sheet (SESS) and double elastic steel sheet (DESS) systems are investigated and correlated. To simulate the power generation of the vibration energy harvester (VEH) of both the SESS and the DESS in different engineering elements, the simple harmonic external force generated by a shaker at the location of the piezo-patch is used as the source. With this, more vibration converted electric energy is derived from the transverse deformation and flapping from the DESS than the SESS beam. The equation of a nonlinear Euler–Bernoulli beam is coupled with the electric energy equation of the piezo-patch to simulate the SESS VEH system. The flapping force from the DESS VEH system can be considered the concentrated external load applied on the SESS beam model. The method of multiple scales (MOMS) is employed to analyze this nonlinear problem. The fixed points plots and the numerical results confirm this theory presented for the two beam systems, which can be used for evaluating similar engineering systems. Experiments are also performed in this study. The Taguchi method is used to analyze the optimum locations of the shaker and piezo-patch, as well as the confidence level of the factors. The method of nonlinear analysis presented in this study demonstrates its accuracy compared with the linear case. The transverse DESS VEH model proposed is proved to be feasible and more effective than the SESS system.

中文翻译:

双弹钢横向振动能量收集

本研究利用压电技术从两端固定压电片的固定固定非线性弹性梁收集振动能量。研究并关联了单弹性钢板 (SESS) 和双弹性钢板 (DESS) 系统。为了在不同工程元素中模拟 SESS 和 DESS 的振动能量收集器 (VEH) 的发电,使用振动器在压电贴片位置产生的简谐外力作为源。这样,与 SESS 梁相比,更多的振动转换电能来自 DESS 的横向变形和拍打。非线性 Euler-Bernoulli 梁方程与压电贴片的电能方程相结合,以模拟 SESS VEH 系统。来自 DESS VEH 系统的拍动力可以被认为是施加在 SESS 梁模型上的集中外部载荷。采用多尺度方法(MOMS)来分析这个非线性问题。不动点图和数值结果证实了针对两个梁系统提出的这一理论,可用于评估类似的工程系统。本研究还进行了实验。田口方法用于分析振动器和压电片的最佳位置,以及因素的置信水平。本研究中提出的非线性分析方法与线性情况相比证明了其准确性。提出的横向 DESS VEH 模型被证明是可行的,并且比 SESS 系统更有效。
更新日期:2021-04-16
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