Modeling for piezoelectric-shape memory alloy composites

A new concept of a piezoelectric ceramic/shape memory alloy (SMA) composite is proposed with aim of using this as a new actuator material with fast actuation speed and large strain. To prove the new concept, a new model is constructed based on Eshelby formulation where linear piezoelectric constitut...

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Bibliographic Details
Published in:Archive of applied mechanics (1991) 2011-05, Vol.81 (5), p.629-640
Main Authors: Lee, Jae-Kon, Taya, Minoru
Format: Article
Language:English
Subjects:
Classical Mechanics
Engineering
Original
Theoretical and Applied Mechanics
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Summary:A new concept of a piezoelectric ceramic/shape memory alloy (SMA) composite is proposed with aim of using this as a new actuator material with fast actuation speed and large strain. To prove the new concept, a new model is constructed based on Eshelby formulation where linear piezoelectric constitutive equations and bi-linear superelastic equations of SMA are used. The predictions of the strain induced by applied stress and electric field are made for two simple designs of piezo–SMA composites, 1-D series and 1-D parallel laminated composites. The proposed model indicated that 1-D parallel laminate provides the highest strain induced under bias stress and applied electric field among other composite geometries.
ISSN:0939-1533
1432-0681
DOI:10.1007/s00419-010-0440-9