Development of cantilevered energy harvesters coupled with a topologically optimized piezoelectric layer oscillating in vortex

Cheol Kim; Jae-Uk Shin; Ju-Young Kim

doi:10.1117/12.915133

27 March 2012 Development of cantilevered energy harvesters coupled with a topologically optimized piezoelectric layer oscillating in vortex

Cheol Kim, Jae-Uk Shin, Ju-Young Kim

Author Affiliations +

Proceedings Volume 8341, Active and Passive Smart Structures and Integrated Systems 2012; 83412N (2012) https://doi.org/10.1117/12.915133
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

An efficient design analysis method for cantilevered beam-type piezoelectric energy harvesters was developed for the prediction of the electric power output, based on the finite element method and the design optimization of piezoelectric materials. The optimum topology of a piezoelectric material layer could be obtained by a newly developed topology optimization technique for piezoelectric materials which utilized the electromechanical coupling equations, MMA (method of moving asymptotes), and SIMP (solid isotropic material with penalization) interpolation. Using the design optimization tool, several cantilevered beam-type piezoelectric energy harvesters which fluctuated in the region of vortex shedding were developed, that consisted of two different material layers - piezoelectric and aluminum layers. In order to obtain maximum electric power, the exciting frequency of the cantilevered energy device must be tuned as close to the natural frequency of the beam as possible. Using the method, the effects of geometric parameters and several piezoelectric materials (PZT, PVDF, and PZT fiber composites) attached to the beam device on power generation were investigated and the electric characteristics were evaluated. The three kinds of material coefficients such as elasticity, capacitance, and piezoelectric coupling are interpolated by element density variables. Then, the shape and size design optimizations for the cantilevered beam geometries with an optimum piezoelectric topology have been performed for a base model.

Citation Download Citation

Cheol Kim, Jae-Uk Shin, and Ju-Young Kim "Development of cantilevered energy harvesters coupled with a topologically optimized piezoelectric layer oscillating in vortex", Proc. SPIE 8341, Active and Passive Smart Structures and Integrated Systems 2012, 83412N (27 March 2012); https://doi.org/10.1117/12.915133

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Ferroelectric polymers

Ferroelectric materials

Electromechanical design

Optimization (mathematics)

Composites

Finite element methods

Aluminum

Show All Keywords

Keywords/Phrases

Search In:

Publication Years