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Finite element modelling of electroceramics.

Lowrie, F*; Cain, M G; Stewart, M (1999) Finite element modelling of electroceramics. NPL Report. CMMT(A)150

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Abstract

This report has been written by Fiona Lowrie of The Structural Materials Centre, DERA, Farnborough, acting as a subcontractor for NPL on the DTI-funded project 6CAM7.
The aim of this study was to investigate whether finite element analysis (FEA) could be used to accurately predict the behaviour of two piezoelectric devices. The choice of two devices, an interdigitated electrode device and a bimorph transducer, is discussed and the construction of a piezoelectric FE model explained. Models of the two devices were produced, and the strain response due to applied electric field predicted. Results were then compared to those experimentally measured, where good agreement was found between the predicted and measured strain of the interdigitated electrode. For the bimorph transducer, the non-linear behaviour of the piezoelectric parameters, due to the high applied fields, caused the modelled response to deviate from that expected. Once the non-linear behaviour was accounted for through modification of the FEA input variables, the model also agreed with the measured data.

Item Type: Report/Guide (NPL Report)
NPL Report No.: CMMT(A)150
Subjects: Advanced Materials
Advanced Materials > Functional Materials
Advanced Materials > Materials Modelling
Last Modified: 10 Sep 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/1060

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