Displacement models for THUNDER actuators having general loads and boundary conditions

Robert Wieman, Ralph C. Smith, Tyson Kackley, Zoubeida Ounaies, Jeff Bernd

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


This paper summarizes techniques for quantifying the displacements generated in THUNDER actuators in response to applied voltages for a variety of boundary conditions and exogenous loads. The PDE models for the actuators are constructed in two steps. In the first, previously developed theory quantifying thermal and electrostatic strains is employed to model the actuator shapes which result from the manufacturing process and subsequent repoling. Newtonian principles are then employed to develop PDE models which quantify displacements in the actuator due to voltage inputs to the piezoceramic patch. For this analysis, drive levels are assumed to be moderate so that linear piezoelectric relations can be employed. Finite element methods for discretizing the models are developed and the performance of the discretized models are illustrated through comparison with experimental data.

Original languageEnglish (US)
Pages (from-to)252-263
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue number1
StatePublished - Aug 21 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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