纵向磁场激励下简支输流微梁的动力学行为研究

江鹏飞; 闫妍; 王文全

doi:10.21656/1000-0887.390185

纵向磁场激励下简支输流微梁的动力学行为研究

doi: 10.21656/1000-0887.390185

¹昆明理工大学工程力学系, 昆明 650500;²东南大学土木工程学院, 南京 210096

基金项目: 国家自然科学基金（面上项目）(11662006)

详细信息

作者简介:
江鹏飞(1994—), 男，硕士生(E-mail: jpf1214@126.com);闫妍(1978—)，女，教授，博士，博士生导师（通讯作者. E-mail: yanyankm@126.com）.

中图分类号: O34
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出版历程
- 收稿日期: 2018-06-28
- 修回日期: 2018-09-12
- 刊出日期: 2019-05-01

Dynamical Behavior Analysis of Micro Beams Conveying Fluid in Longitudinal Magnetic Fields

¹Department of Engineering Mechanics, Kunming University of Science and Technology, Kunming 650500, P.R.China;²School of Civil Engineering, Southeast University, Nanjing 210096, P.R.China

Funds: The National Natural Science Foundation of China（General Program）(11662006)

摘要

摘要: 受磁场驱动的微机电系统在工作中存在着力、磁、流-固耦合等非线性特征，其力学行为非常复杂，并将影响系统运行的安全性与可靠性.该文采用非局部Euler梁模型研究磁场激励下简支输流微梁（一种微机电系统）的动力学行为，通过动力系统分支理论和谐波平衡法来考察系统的稳定性和幅频特性曲线.结果表明，可以采用改变磁场强度、流速和阻尼的三重方式调节微机电系统的频率.研究中还发现，小尺度效应和磁场强度可以影响临界流速，阻尼的存在可以改变临界流速的个数和系统的分岔类型.
- 输流微梁 /
- 纵向磁场 /
- 流固耦合 /
- 稳定性 /
- 振动频率
Abstract: Such nonlinear characteristics as mechanics, magnetics and fluidstructure interactions exist in the microelectromechanical system (MEMS) driven by the magnetic field, which will affect the safety and reliability of the system. Based on the nonlocal Eulerian beam model, the dynamical behaviors of fluidconveying micro beams (a kind of MEMS) in magnetic fields were studied. The dynamical system bifurcation theory and the harmonic balance method were used to study the stability and amplitudefrequency characteristic curves of the pinnedpinned micro beam system. The results show that, the frequency of the beam can be adjusted through changes of the magnetic field intensity, the flow velocity and the system damping. The smallscale effects tend to change the critical velocity and the existence of damping can change the number of critical velocities and the type of bifurcation.
- micro beam conveying fluid /
- longitudinal magnetic field /
- fluidstructure interaction /
- stability /
- vibration frequency

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参考文献(15)

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纵向磁场激励下简支输流微梁的动力学行为研究

doi: 10.21656/1000-0887.390185

作者简介:
江鹏飞(1994—), 男，硕士生(E-mail: jpf1214@126.com);闫妍(1978—)，女，教授，博士，博士生导师（通讯作者. E-mail: yanyankm@126.com）.

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Dynamical Behavior Analysis of Micro Beams Conveying Fluid in Longitudinal Magnetic Fields

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纵向磁场激励下简支输流微梁的动力学行为研究

doi: 10.21656/1000-0887.390185

作者简介: 江鹏飞(1994—), 男，硕士生(E-mail: jpf1214@126.com);闫妍(1978—)，女，教授，博士，博士生导师（通讯作者. E-mail: yanyankm@126.com）.

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出版历程

Dynamical Behavior Analysis of Micro Beams Conveying Fluid in Longitudinal Magnetic Fields

计量

出版历程

目录

作者简介:
江鹏飞(1994—), 男，硕士生(E-mail: jpf1214@126.com);闫妍(1978—)，女，教授，博士，博士生导师（通讯作者. E-mail: yanyankm@126.com）.