1.山东交通学院 航空学院,济南 250357
2.山东大学 机械工程学院,济南 250061
WU Huayong, E-mail: whyyyl@163.com
收稿:2024-04-15,
修回:2024-06-18,
纸质出版:2026-01-15
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吴化勇,刘文平. 残余应力对微膜动力学性能的影响研究[J]. 机械强度,2026,48(1):88-92.
WU Huayong,LIU Wenping. Effect of residual stress on dynamic properties of the micro-membrane[J]. Journal of Mechanical Strength,2026,48(1):88-92.
吴化勇,刘文平. 残余应力对微膜动力学性能的影响研究[J]. 机械强度,2026,48(1):88-92. DOI: 10.16579/j.issn.1001.9669.2026.01.011.
WU Huayong,LIU Wenping. Effect of residual stress on dynamic properties of the micro-membrane[J]. Journal of Mechanical Strength,2026,48(1):88-92. DOI: 10.16579/j.issn.1001.9669.2026.01.011.
目的
2
针对微机电薄膜中的残余应力问题,开展了具有残余应力微膜的动力学性能研究。
方法
2
首先,建立具有残余应力微薄板的数学模型,研究了残余应力对微膜固有频率和振型的影响规律,讨论了残余应力对板、膜行为特性转变的影响。然后,基于最小势能原理研究了具有残余应力微膜的稳定性,提出了防止微膜压曲的措施,分析了微膜在简谐激励下的振动响应。
结果
2
结果表明,残余应力会引起板、膜行为的转变,残余应力对固有频率影响显著,但对振型的影响较小;通过改变薄膜的结构参数和制备工艺,可有效防止薄膜失稳;残余应力对微膜固有频率和振动位移的影响呈相反的变化趋势。研究结果对微膜结构的微机电系统发展具有重要的参考意义和应用价值。
Objective
2
Aiming at the residual stress problem in micro-electro-mechanical system (MEMS) films
research on the dynamic performance of micro-membrane with residual stress was conducted.
Methods
2
Firstly
a mathematical model of thin micro-plates with residual stress was established. The influence law of residual stress on the natural frequency and vibration mode of micro-membrane was studied
and the influence of residual stress on the transition of behavioral characteristics between plates and films was discussed. Then
the stability of micro-membrane with residual stress was studied based on the minimum potential energy principle. Measures for preventing the buckling of micro-membrane were proposed
and the vibration response of micro-membrane under harmonic excitation was analyzed.
Results
2
The results show that residual stress could induce the transition of behavior between plates and films; it has a significant impact on natural frequency but a slight effect on vibration mode. The instability of micro-membrane could be effectively prevented by adjusting the structural parameters and preparation process of the films. Moreover
the influences of residual stress on the natural frequency and vibration displacement of micro-membrane presented opposite variation trends. The research results have important reference significance and application value for the development of MEMS based on micro-membrane structures.
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