AERO- elastic/viscoelastic sensitivity analyses of piezoelectric energy harvesting part I: Linear elastic results

Dong Guan, Yuta Saitob, Harry H. Hilton

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In the present paper a study is presented for parameter evolution to ascertain the relative importance of PZT’s prior to a more expansive optimization study that will be undertaken next. While diverse current and future materials may become more efficient in EMF generation, the elastic and viscoelastic analyses presented here will be the same and identical state variables will remain key players in the electrical harvesting schemes. Analyses are formulated for lifting surface motions consisting of coupled flexible plunging and twisting and rigid body rolls combined with PZT effects. The motivation is to determine potential beneficial energy harvesting or scavenging and possible adverse effects of such extracted energy on flutter, torsional divergence, control reversal velocities and material failures. The governing relations are formulated and solved describing the extraction of energy through piezoelectric (PZT) devices in elastic and viscoelastic wings, a process generally referred to as energy harvesting or scavenging. The process can be used not only to store the recovered energy but also as control device to prevent torsional divergence, fluter, control reversal, material failures, creep buckling, excessive deflections, etc. This can be accomplished by means of combinations of optimal designer viscoelastic, aerodynamic and PZT or magnetic properties. However, the requirements are diametrically opposed as energy harvesting calls for large deflections and hence more power generation, while stability demands small and limited deflections. Illustrative examples are presented and evaluated. The evolution non-optimum elastic states of several principal parameters is studied and graphed in order to obtain an assessment of their relative importance to the harvesting process as prelude to similar viscoelastic studies and their subsequent optimization of maximum harvestable energy without serious aero – piezo – elastic/viscoelastic operational performances degradations.

Original languageEnglish (US)
Title of host publicationAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105326
StatePublished - 2018
EventAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018 - Kissimmee, United States
Duration: Jan 8 2018Jan 12 2018

Publication series

NameAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018


OtherAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018
Country/TerritoryUnited States


  • Aero-piezo-viscoelasticity
  • Aero–piezo–elasticity
  • Energy harvesting
  • PZT
  • Stability considerations
  • Wing deformations during maneuvers

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Architecture


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