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The transformation of vibrations into electric energy through the use of piezoelectric devices is an exciting and rapidly developing area of research with a widening range of applications constantly materialising. With Piezoelectric Energy Harvesting, world-leading researchers provide a timely and comprehensive coverage of the electromechanical modelling and applications of piezoelectric energy harvesters. They present principal modelling approaches, synthesizing fundamental material related to mechanical, aerospace, civil, electrical and materials engineering disciplines for vibration-based energy harvesting using piezoelectric transduction. Piezoelectric Energy Harvesting provides the first comprehensive treatment of distributed-parameter electromechanical modelling for piezoelectric energy harvesting with extensive case studies including experimental validations, and is the first book to address modelling of various forms of excitation in piezoelectric energy harvesting, ranging from airflow excitation to moving loads, thus ensuring its relevance to engineers in fields as disparate as aerospace engineering and civil engineering. Coverage includes: Analytical and approximate analytical distributed-parameter electromechanical models with illustrative theoretical case studies as well as extensive experimental validations Several problems of piezoelectric energy harvesting ranging from simple harmonic excitation to random vibrations#xA0; Details of introducing and modelling piezoelectric coupling for various problems Modelling and exploiting nonlinear dynamics for performance enhancement, supported with experimental verifications Applications ranging from moving load excitation of slender bridges to airflow excitation of aeroelastic sections#xA0; A review of standard nonlinear energy harvesting circuits with modelling aspects.

Alper Erturk, Virginia Tech, USA, is a Graduate Research Assistant in the Center for Intelligent Material Systems and Structures at Virginia Tech. He has written 1 book chapter and over 30 articles in various international journals and conference proceedings. His recent article on distributed-parameter electromechanical modelling of piezoelectric energy harvesters published in the ASME Journal of Vibration and Acoustics remained the topmost downloaded article of the journal for several months in 2008. His research includes experimental aspects of piezoelectric energy harvesting not only for verification and validation of his models but also for new applications.

Daniel J Inman, Virginia Tech, USA, is the Director of the Center for Intelligent Material Systems and Structures and the G.R. Goodson Professor in the Department of Mechanical Engineering at Virginia Tech. He also holds the Brunel Chair in Intelligent Materials and Structures at the University of Bristol. Since 1980, he has published 8 books, 20 book chapters, over 225 journal papers and 432 proceedings papers, given 41 keynote or plenary lectures, graduated 47 Ph.D. students and supervised more than 75 MS degrees. He is currently Technical Editor of the Journal of Intelligent Material Systems and Structures (1999-2004), Technical Editor of the Shock and Vibration Digest (1998-2001), and Technical Editor of the journal Shock and Vibration (1999-2004). He was awarded the SPIE Smart Structures and Materials Life Time Achievement Award in 2003, and in 2007 he received the ASME Den Hartog Award for lifetime achievement in teaching and research in vibration.

About the Authors
Preface
Introduction to Piezoelectric Energy Harvesting
Vibration-Based Energy Harvesting Using Piezoelectric Transduction
An Examples of a Piezoelectric Energy Harvesting System
Mathematical Modeling of Piezoelectric Energy Harvesters
Summary of the Theory of Linear Piezoelectricity
Outline of the Book
Base Excitation Problem for Cantilevered Structures and Correction of the Lumped-Parameter Electromechanical Model
Base Excitation Problem for the Transverse Vibrations
Correction of the Lumped-Parameter Base Excitation Model for Transverse Vibrations
Experimental Case Studies for Validation of the Correction Factor
Base Excitation Problem for Longitudinal Vibrations and Correction of its Lumped-Parameter Model
Correction Factor in the Electromechanically Coupled Lumped-Parameter Equations and a Theoretical Case Study
Summary
Chapter Notes
Analytical Distributed-Parameter Electromechanical Modeling of Cantilevered Piezoelectric Energy Harvesters
Fundamentals of the Electromechanically Coupled Distributed-Parameter Model
Series Connection of the Piezoceramic Layers
Parallel Connection of Piezoceramic Layers
Equivalent Representation of the Series and the Parallel Connection Cases
Single-Mode Electromechanical Equations for Modal Excitations
Multi-mode and Single-Mode Electromechanical FRFs
Theoretical Case Study
Summary
Chapter Notes
Experimental Validation of the Analytical Solution for Bimorph Configurations
PZT-5H Bimorph Cantilever without a Tip Mass
PZT-5H Bimorph Cantilever with a Tip Mass
PZT-5A Bimorph Cantilever
Summary
Chapter Notes
Dimensionless Equations, Asymptotic Analyses, and Closed-Form Relations for Parameter Identification and Optimization
Dimensionless Representation of the Single-Mode Electromechanical FRFs
Asymptotic Analyses and Resonance Frequencies
Identification of Mechanical Damping
Identification of the Optimum Electrical Load for Resonance Excitation
Intersection of the Voltage Asymptotes and a Simple Technique for the Experimental Identification of the Optimum Load Resistance
Vibration Attenuation Amplification from the Short-Circuit to Open-Circuit Conditions
Experimental Validation for a PZT-5H Bimorph Cantilever
Summary
Chapter Notes
Approximate Analytical Distributed-Parameter Electromechanical Modeling of Cantilevered Piezoelectric Energy Harvesters
Unimorph Piezoelectric Energy Harvester Configuration
Electromechanical Euler-Bernoulli Model with Axial Deformations
Electromechanical Rayleigh Model with Axial Deformations
Electromechanical Timoshenko Model with Axial Deformations
Modeling of Symmetric Configurations
Presence of a Tip Mass in the Euler-Bernoulli, Rayleigh, and Timoshenko Models
Comments on the Kinematically Admissible Trial Functions
Experimental Validation of the Assumed-Modes Solution for a Bimorph Cantilever
Experimental Validation for a Two-Segment Cantilever
Summary
Chapter Notes
Modeling of Piezoelectric Energy Harvesting for Various Forms of Dynamic Loading
Governing Electromechanical Equations
Periodic Excitation
White Noise Excitation
Excitation Due to Moving Loads
Local Strain Fluctuations on Large Structures
Numerical Solution for General Transient Excitation
Case Studies
Summary
Chapter Notes
Modeling and Exploiting Mechanical Nonlinearities in Piezoelectric Energy Harvesting
Perturbation Solution of the Piezoelectric Energy Harvesting Problem: the Method of Multiple Scales
Monostable Duffing Oscillator with Piezoelectric Coupling
Bistable Duffing Oscillator with Piezoelectric Coupling: the Piezomagnetoelastic Energy Harvester
Experimental Performance Results of the Bistable Peizomagnetoelastic Energy Harvester
A Bistable Plate for Piezoelectric Energy Harvesting
Summary
Chapter Notes
Piezoelectric Energy Harvesting from Aeroelastic Vibrations
A Lumped-Parameter Piezoaeroelastic Energy Harvester Model for Harmonic Response
Experimental Validations of the Lumped-Parameter Model at the Flutter Boundary
Utilization of System Nonlinearities in Piezoaeroelastic Energy Harvesting
A Distributed-Parameter Piezoaeroelastic Model for Harmonic Response: Assumed-Modes Formulation
Time-Domain and Frequency-Domain Piezoaeroelastic Formulations with Finite-Element Modeling
Theoretical Case Study for Airflow Excitation of a Cantilevered Plate
Summary
Chapter Notes
Effects of Material Constants and Mechanical Damping on Power Generation
Effective Parameters of Various Soft Ceramics and Single Crystals
Theoretical Case Study for Performance Comparison of Soft Ceramics and Single Crystals
Effective Parameters of Typical Soft and Hard Ceramics and Single Crystals
Theoretical Case Study for Performance Comparison of Soft and Hard Ceramics and Single Crystals
Experimental Demonstration for PZT-5A and PZT-5H Cantilevers
Summary
Chapter Notes
A Brief Review of the Literature of Piezoelectric Energy Harvesting Circuits
AC-DC Rectification and Analysis of the Rectified Output
Two-Stage Energy Harvesting Circuits: DC-DC Conversion for Impedance Matching
Synchronized Switching on Inductor for Piezoelectric Energy Harvesting
Summary
Chapter Notes
Piezoelectric Constitutive Equations
Modeling of the Excitation Force in Support Motion Problems of Beams and Bars
Modal Analysis of a Uniform Cantilever with a Tip Mass
Strain Nodes of a Uniform Thin Beam for Cantilevered and Other Boundary Conditions
Numerical Data for PZT-5A and PZT-5H Piezoceramics
Constitutive Equations for an Isotropic Substructure
Essential Boundary Conditions for Cantilevered Beams
Electromechanical Lagrange Equations Based on the Extended Hamilton's Principle
Index.
Table of Contents provided by Publisher. All Rights Reserved.

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Piezoelectric Energy Harvesting

Piezoelectric Energy Harvesting

047068254X

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