Enhanced wave and finite element method for wave propagation and forced response prediction in periodic piezoelectric structures

作     者：Fan Yu Manuel Collet Mohamed Ichchou Li Lin Olivier Bareille Zoran Dimitrijevic 

作者机构：Laboratory of Tribology and Systems Dynamic Ecole Centrale de Lyon Ecully 691304 France School of Energy and Power Engineering Beihang University Beijing 100083 China PSA Peugeot Citroen Paris F-78943 France 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2017年第30卷第1期

页      面：75-87页

核心收录：

学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the company PSA Peugeot Citroёn for the financial support 

主　　题：Eigenvalue scheme Periodic structure Piezoelectric shunt Reduced model Thin-wall structure Wave and finite element method 

摘      要：As a promising numerical tool of structural dynamics in mid- and high frequencies, the wave and finite element method（WFEM） is receiving increasingly attention and applications. In this paper, an enhanced WFEM has been developed with a reduced model and a new eigenvalue scheme. The reduced model is applicable for structures with piezoelectric shunts or local dampers;the new eigenvalue scheme can mitigate the ill-conditioning when the wave basis is calculated. The enhanced WFEM is applied to a thin-wall structure with periodically distributed piezoelectric materials（PZT）. Both free wave characteristics and forced response are analyzed and the influences of the suggested enhancements are presented. It is shown that if the control factors are properly chosen, these enhancements can improve the accuracy while accelerating the calculation. Resulting from the complexity of the application, these enhancements are not optional but imperative.