Interaction of structure vibration and piezoelectric actuation

S. M. Yang, Y. J. Lee

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

A stepped beam model is developed to predict analytically the natural frequencies and mode shapes at different piezoelectric sensor/actuator locations. The modal solution obtained by including the inertia and stiffness of the surface-bonded piezoelectric materials is applied to investigate the interaction of structure vibration and piezoelectric actuation under closed circuit condition. It is shown that a generalized stiffness from electromechanical coupling is induced by the interaction. The generalized stiffness is a function of structure mode shapes and piezoelectric sensor/actuator locations, thus either softening or stiffening system stiffness is achievable in closed circuit condition. All analytical predictions are validated by modal testing.

Original languageEnglish
Article number012
Pages (from-to)494-500
Number of pages7
JournalSmart Materials and Structures
Volume3
Issue number4
DOIs
Publication statusPublished - 1994 Dec 1

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

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