Advanced concepts in nonlinear piezoelectric energy harvesting: Intentionally designed, inherently present, and circuit nonlinearities

dc.contributor.advisor Erturk, Alper
dc.contributor.author Leadenham, Stephen
dc.contributor.committeeMember Ferri, Aldo
dc.contributor.committeeMember Jacobs, Laurence
dc.contributor.committeeMember Ruzzene, Massimo
dc.contributor.committeeMember Wang, Yang
dc.contributor.department Mechanical Engineering
dc.date.accessioned 2016-01-07T17:23:42Z
dc.date.available 2016-01-07T17:23:42Z
dc.date.created 2015-12
dc.date.issued 2015-08-21
dc.date.submitted December 2015
dc.date.updated 2016-01-07T17:23:42Z
dc.description.abstract This work is centered on the modeling, experimental identification, and dynamic interaction of inherently present and intentionally designed nonlinearities of piezoelectric structures focusing on applications to vibration energy harvesting. The following topics are explored in this theoretical and experimental research: (1) frequency bandwidth enhancement using a simple, intentionally designed, geometrically nonlinear M-shaped oscillator for low-intensity base accelerations; (2) multi-term harmonic balance analysis of this structure for primary and secondary resonance behaviors when coupled with piezoelectrics and an electrical load; (3) inherent electroelastic material softening and dissipative nonlinearities for various piezoelectric materials with a dynamical systems approach; and (4) development of a complete approximate analytical multiphysics electroelastic modeling framework accounting for material, dissipative, and strong circuit nonlinearities. The ramifications of this research extend beyond energy harvesting, since inherent nonlinearities of piezoelectric materials are pronounced in various applications including sensing, actuation, and vibration control, which can also benefit from bandwidth enhancement from designed nonlinearities.
dc.description.degree Ph.D.
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/54361
dc.language.iso en_US
dc.publisher Georgia Institute of Technology
dc.subject Piezoelectricity
dc.subject Energy harvesting
dc.subject Nonlinear
dc.subject Vibrations
dc.subject Structural dynamics
dc.title Advanced concepts in nonlinear piezoelectric energy harvesting: Intentionally designed, inherently present, and circuit nonlinearities
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Erturk, Alper
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication c1624a65-4a10-483d-8219-eff452d368cd
relation.isOrgUnitOfPublication c01ff908-c25f-439b-bf10-a074ed886bb7
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
thesis.degree.level Doctoral
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