超磁致伸缩功率超声换能器的振动分析  

Vibration Analysis on Magnetostrictive Power Ultrasonic Transducer

作　　者：曾庚鑫[1,2] 曹彪[1] 曾海泉[3] 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640 [2]龙岩学院物理与机电工程学院,龙岩364012 [3]厦门理工学院机械系,厦门361024

出　　处：《振动．测试与诊断》2011年第5期614-617,666,共4页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金项目(编号:50875177);辽宁省教育厅重点实验室项目(编号:2008S170);福建省教育厅资金项目(编号:A09221)

摘　　要：基于电磁原理和弹性体振动理论,分析了超磁致伸缩功率超声换能器的工作原理,研究了超磁致伸缩材料(giant magnetostrictive material,简称GMM)在外磁场驱动下的非线性动态特性;推导出TerfenolD棒的波动方程和波动方程稳态解的表达式。用MATLAB 70软件对理论分析结果进行仿真,并进行了相应实验验证。Based on electromagnetic theory and vibration theory,the working principle of the magnetostrictive power ultrasonic transducer is analyzed.The nonlinear dynamic characteristics of the giant magnetostrictive material(GMM) in the outside magnetic field acts are studied,the wave equation of Terfenol-D rod is deduced,and the steady-state solution to the wave equation is obtained.MATLAB 7.0 softwore is adopted to realize the simulation of the theoretical analysis results and the experimental verifying is also carried out.

关 键 词：超声换能器 磁致伸缩 动态特性 波动方程 

分 类 号：TG156[金属学及工艺—热处理] TP391.9[金属学及工艺—金属学]