Band gap of the flexural vibration in the periodic pipe conveying fluid with axial force on elastic foundation

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (18) : 128-131.

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Band gap of the flexural vibration in the periodic pipe conveying fluid with axial force on elastic foundation

Chi Qiankun1,2 Wen Jihong1,2 Yu Dianlong1,2

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Abstract

The propagation properties of the flexural vibration are affected by the elastic foundations and external forces. The band gap characteristics in the pipe conveying fluid with axial force on elastic foundations are analyzed by using the transfer matrix method. The elastic foundation can dampen the propagation of the flexural wave under some pivotal frequency, and this attenuation is not the causation of the periodic pipe. Both the elastic foundation and axial forces can affect the gap frequency in the pipe, but the elastic foundation can enhance the stability of the pipe with axial forces obviously.

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Phononic Crystals / pipe / elastic foundations / axial force

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Chi Qiankun; Wen Jihong; Yu Dianlong;. Band gap of the flexural vibration in the periodic pipe conveying fluid with axial force on elastic foundation[J]. Journal of Vibration and Shock, 2012, 31(18): 128-131