Model losses of piezoelectric devices using finite element and complex material constants

Nien-Ti Tsou, Chang Wei Huang, Chuin Shan Chen, Jay Shieh

研究成果: Paper同行評審

摘要

A methodology to model mechanical losses of piezoelectric devices by the finite element analysis is presented. Complex parts of the material constants are extracted using an iterative method. Mechanical losses of piezoelectric devices are taken into account through these complex constants. A scheme using the QR factorization is developed to decompose mechanical losses of an arbitrary-shaped device into fundamental modes. These losses are then transformed into an equivalent viscous damping ratio in a standard finite element dynamics analysis. The proposed method enables us to obtain a reliable mechanical loss factor. Numerical results demonstrate that the proposed method can predict measured admittance spectra reasonably well.

原文English
頁面125-130
頁數6
出版狀態Published - 1 十二月 2006
事件10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010 - Bangkok, Thailand
持續時間: 3 八月 20065 八月 2006

Conference

Conference10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010
國家Thailand
城市Bangkok
期間3/08/065/08/06

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