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弹性介质中输流微管道的热弹性振动分析

DOI: 10.6052/1000-0879-14-151, PP. 728-732

Keywords: 输流微管道,热弹性振动,流固耦合,微流体,弹性介质

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Abstract:

研究热环境中被弹性介质包围的微米输流管道的横向振动问题.根据Hamilton原理及非线性热弹性理论建立管道横向振动控制方程,并利用复模态法对其进行求解,得到了系统的固有频率和屈曲失稳临界流速,讨论了环境温度和一些重要系统参数对管道振动特性的影响.研究结果表明环境温度变化、管道和流体的微尺度效应、管道外径及弹性介质刚度对输流微管道固有频率和临界流速都有很大影响.

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