scholarly journals Supersonic Flutter Utilization for Effective Energy-Harvesting Based on Piezoelectric Switching Control

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Kanjuro Makihara ◽  
Shigeru Shimose
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Energy Harvesting ◽  
Electrical Energy ◽  
Effective Energy ◽  
The Finite Element Method ◽  
Sounding Rockets ◽  
Wing Flutter ◽  
Harvesting Systems ◽  
Supersonic Flutter

The harvesting of electrical energy generated from the flutter phenomenon of a plate wing is studied using the quasi-steady aerodynamic theory and the finite element method. The example of supersonic flutter structure comes from sounding rockets’ wings. Electrical energy is harvested from supersonic flutter by using piezoelectric patches and switching devices. In order to evaluate the harvesting performance, we simulate flutter dynamics of the plate wing to which piezoelectric patches are attached. We demonstrate that our harvesting system can generate much more electrical energy from wing flutter than conventional harvesting systems can. This flutter utilization changes our perception to a useful one in various fruitful applications from a destructive phenomenon.

Design, Simulation & Optimization of a MEMS Based Piezoelectric Energy Harvester

2021 ◽  
Vol 12 (07) ◽  
pp. 318-329
Author(s):  
Indrajit Chandra Das ◽  
Md. Arafat Rahman ◽  
Sanjoy Dam
Keyword(s):  
Finite Element Method ◽  
Energy Harvesting ◽  
Energy Harvester ◽  
Proof Mass ◽  
Simulation Optimization ◽  
Electrical Energy ◽  
Comsol Multiphysics ◽  
Piezoelectric Energy Harvesting ◽  
The Finite Element Method ◽  
Piezoelectric Energy

Energy harvesting is defined as a process of acquiring energy surrounding a system and converting it into electrical energy for usage. Piezoelectric energy harvesting is a very important concept in energy harvesting in microelectronics. In this report, an analysis of the cantilever type piezoelectric energy harvester is conducted using the finite element method (FEM) based software COMSOL Multiphysics. A unimorph type cantilever beam of the silicon substrate, structural steel as proof mass and support, and PZT-5A material as piezoelectric constitute the physical system.

scholarly journals Exact mode shapes of T-shaped and overhang-shaped microcantilevers

2020 ◽  
Vol 30 (3) ◽  
Author(s):  
Le Tri Dat ◽  
Nguyen Duy Vy ◽  
Vu Lan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Energy Harvesting ◽  
Analytical Solutions ◽  
Mode Shapes ◽  
The Finite Element Method ◽  
Attached Mass ◽  
Highly Sensitive ◽  
Resonance Frequencies ◽  
Applicable Range

Resonance frequencies and mode shapes of microcantilevers are of important interest in micro-mechanical systems for enhancing the functionality and applicable range of the cantilevers in vibration transducing, energy harvesting, and highly sensitive measurement. In this study, using the Euler-Bernoulli theory for beam, we figured out the exact mode shapes of cantilevers of varying widths such as the overhang- or T-shaped cantilevers. The obtained mode shapes have been shown to significantly deviate from the approximate forms of a rectangular cantilever that are commonly used in mechanics and physics. They were then used to figure out the resonance frequencies of the cantilever. The analytical solutions have been confirmed by using the finite element method simulations with very low deviation. This study suggested a method for correctly obtaining the resonance frequency of microcantilevers with complicated dimensions, such as the doubly clamped cantilever with the undercut, with the overhangs at the clamped positions, or with an attached mass in the middle.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

Sign in / Sign up

Export Citation Format

Share Document