Flexural vibration property of periodic pipe system conveying fluid based on Timoshenko beam equation
Flexural vibration property of periodic pipe system conveying fluid based on Timoshenko beam equation
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DOI：
10.7498/aps.58.8357
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发表时间：
2009-12-01
影响因子：
1
通讯作者：
Wen Xi-Sen
中科院分区：
文献类型：
--
作者：
Shen Hui-Jie;Wen Ji-Hong;Wen Xi-Sen
管道系统中流体与结构相互作用引起的振动在许多领域都存在，弯曲振动的控制非常重要。将声子晶体的思想引入到流体输送管道系统的设计中。基于Timoshenko梁方程，采用传递矩阵法，研究了振动的带隙特性及其传输特性。分析了材料阻尼比和弹簧支承刚度对带隙的影响。输送流体的周期性管道系统中带隙的存在为管道振动控制提供了新的认识。
Fluid and structure interaction induced vibration in pipe system conveying fluid occurs in many fields, and the flexural vibration control is very important. The idea of phononic crystals is introduced into the design of pipe system conveying fluid. Basing on Timoshenko beam equation, and using the transfer matrix method, we study the band gap properties of the vibration and its transmission properties. The effect of the material damping ratio and spring support stiffness on the band gap is analyzed. The existence of band gaps in the periodic pipe system conveying fluid lends new insight into vibration control of pipes.