The dynamic behaviour of a piezoelectric actuator bonded to an anisotropic elastic medium
The dynamic behaviour of a piezoelectric actuator bonded to an anisotropic elastic medium
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DOI：
10.1016/j.ijsolstr.2005.03.010
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发表时间：
2006-03-01
影响因子：
3.6
通讯作者：
Sun, CT
中科院分区：
文献类型：
--
作者：
Huang, GL;Sun, CT
表面粘贴压电致动器可以产生弹性波，用于复合材料的损伤监测。本文提供了一个分析和数值研究，以模拟波在各向异性介质中诱导的表面粘结压电陶瓷致动器在高频电负载下的传播。基于一维压电陶瓷作动器模型，研究了压电陶瓷作动器在面内力、电载荷作用下与各向异性弹性介质之间的动态载荷传递。利用傅里叶变换技术，求解界面剪切应力的积分方程，研究了表面键合致动器引起的波的传播。通过典型算例分析了复合材料的几何形状、材料组合、加载频率和材料各向异性对载荷传递和波传播的影响。(c)2005爱思唯尔有限公司保留所有权利。
Surface-bonded piezoelectric actuators can be used to generate elastic waves for monitoring damages of composite materials. This paper provides an analytical and numerical study to simulate wave propagation in an anisotropic medium induced by surface-bonded piezocermic actuators under high-frequency electric loads. Based on a one-dimensional actuator model, the dynamic load transfer between a piezoceramic actuator and an anisotropic elastic medium under inplane mechanical and electrical loading is obtained. The wave propagation induced by the surface-bonded actuator is also studied in detail by using Fourier transform technique and solving the resulting integral equations in terms of the interfacial shear stress. Typical examples are provided to show effects of the geometry, the material combination, the loading frequency and the material anisotropy of the composite upon the load transfer and the resulting wave propagation. (c) 2005 Elsevier Ltd. All rights reserved.