悬臂导电薄板磁弹性耦合作用下的磁阻尼分析

吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (02): 413-0418.

悬臂导电薄板磁弹性耦合作用下的磁阻尼分析

张建平^1,2,戴咏夏¹,颜志江³,纪冬梅¹,王昊¹

1.上海电力学院能源与环境工程学院,上海 200090;2.上海交通大学机械与动力工程学院,上海 200240;3.浙江驰江工贸有限公司,浙江武义 321210

收稿日期:2009-05-13 发布日期:2011-03-01
通讯作者: 张建平（1972-）,男,博士,教授.研究方向:新能源装置中关键部件的力学行为分析,电磁除尘技术，机电产品的寿命预测与可靠性测试.E-mail:jpzhanglzu@163.com E-mail:jpzhanglzu@163.com
作者简介:张建平（1972-）,男,博士,教授.研究方向:新能源装置中关键部件的力学行为分析,电磁除尘技术|机电产品的寿命预测与可靠性测试.E-mail:jpzhanglzu@163.com
基金资助:
上海市自然科学基金项目（09ZR1413000）;上海市教育委员会重点学科（第五期）项目(G51304）;上海市教育委员会科研创新项目(11ZZ172,11ZZ171);上海市教育委员会第三期本科教育高地建设项目.

Magnetic damping analysis of magnetoelastic coupling interactions for cantilever conductive thin plate

ZHANG Jian-ping^1,2, DAI Yong-xia¹, YAN Zhi-jiang³,JI Dong-mei¹, WANG Hao¹

1.School of Thermal Power and Environmental Engineering, Shanghai University of Electric Power, Shanghai 200090, China;2.School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China;3.Zhejiang Flyriver Industry &Trade Co., Ltd., Wuyi 321210, China

Received:2009-05-13 Published:2011-03-01

摘要/Abstract

摘要：

针对处于外加磁场作用下的悬臂导电薄板，基于导电介质所满足的电磁学及力学基本定律和方程，建立了描述其力电磁耦合作用下几何非线性振动问题的理论模型，并给出了等效阻尼系数的确定方法，定量模拟了面内恒定磁场给涡电流和挠度耦合程度以及磁阻尼强弱所带来的影响。仿真结果表明，随着面内恒定磁场的增加，几何非线性效应和由耦合作用引起的磁阻尼会增强，而等效阻尼系数随着周期或时间是衰减的，并随着面内恒定磁场的增加而增加，这为磁场环境中导电结构的振动控制研究提供了一定的科学依据。

关键词: 磁阻尼, 导电薄板, 磁弹性耦合作用, 几何非线性, 面内磁体力

Abstract:

For the cantilever conductive thin plate under external magnetic field, a theoretical model was established to describe the vibration problem of geometric nonlinearity under the mechanicselectricitymagnetism coupling interactions. This model is based on the basic laws and equations of electromagnetics and mechanics of conductive media. Furthermore, the method to determine the effective damping factor was given, and the influences of inplane constant magnetic field on eddy, deformation and magnetic damping were quantitatively simulated. Numerical results demonstrate that the effects of geometric nonlinearity and the coupling induced magnetic damping become stronger as the inplane constant magnetic field increases. The effective damping factor decays with the period or the time, but increases with the inplane constant magnetic field. This study provides scientific basis for the vibration control of conductive structures in magnetic field environment.

Key words: magnetic damping, conductive thin plate, magnetoelastic coupling interactions, geometric nonlinearity, inplane magnetic volume forces

中图分类号:

O322

张建平, 戴咏夏, 颜志江, 纪冬梅, 王昊. 悬臂导电薄板磁弹性耦合作用下的磁阻尼分析[J]. 吉林大学学报(工学版), 2011, 41(02): 413-0418.

ZHANG Jian-Ping, DAI Yong-Xia, YAN Zhi-Jiang, JI Dong-Mei, WANG Hao. Magnetic damping analysis of magnetoelastic coupling interactions for cantilever conductive thin plate[J]. 吉林大学学报(工学版), 2011, 41(02): 413-0418.

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