Design of compliant mechanical amplifiers for piezoceramic stack actuators considering stiffness properties

Mary Frecker, Shawn Canfield

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

7 Scopus citations

Abstract

A topology optimization method for design of compliant mechanical amplifiers for piezoceramic stack actuators is presented. Previously the optimization was done assuming that the stack actuator provided a constant unit load to the compliant mechanism. However, it is well known that the best actuator performance occurs when the stiffness of the stack is considered and matches the stiffness of the surrounding coupling structure. In this paper an improved formulation is presented where the piezoelectric properties and stiffness of the stack are included along with an external spring representing a resisting load the actuator is working against. The optimization problem formulation, finite element implementation, solution algorithm are discussed. Two design examples are presented which illustrate the effect of the stiffness of the external spring and the size of the design domain on the topology of the solution.

Original languageEnglish (US)
Title of host publicationDynamic Systems and Control
Subtitle of host publicationVolume 2
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages867-874
Number of pages8
ISBN (Electronic)9780791826652
DOIs
StatePublished - 2000
EventASME 2000 International Mechanical Engineering Congress and Exposition, IMECE 2000 - Orlando, United States
Duration: Nov 5 2000Nov 10 2000

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume2000-O

Conference

ConferenceASME 2000 International Mechanical Engineering Congress and Exposition, IMECE 2000
Country/TerritoryUnited States
CityOrlando
Period11/5/0011/10/00

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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