Institute of Mechatronical Engineering, and Key Lab of Photonic and Phononic Crystals (MOE), National University of Defense Technology, Changsha 410073
Theoretical and Experimental Investigation of Flexural Wave Propagating in a Periodic Pipe with Fluid-Filled Loading
Institute of Mechatronical Engineering, and Key Lab of Photonic and Phononic Crystals (MOE), National University of Defense Technology, Changsha 410073
摘要Based on the Bragg scattering mechanism of phononic crystals (PCs), a periodic composite material pipe with fluid loading is designed and studied. The band structure of the flexural wave in the periodic pipe is calculated with the transfer matrix (TM) method. A periodic piping experimental system is designed, and the vibration experiment is performed to validate the attenuation ability of the periodic pipe structure. Finally, a finite-element pipe model is constructed using the MSC-Actran software, and the calculated results match well with the vibration experiment. The errors between the theoretical calculation results and the vibration experimental results are analyzed.
Abstract：Based on the Bragg scattering mechanism of phononic crystals (PCs), a periodic composite material pipe with fluid loading is designed and studied. The band structure of the flexural wave in the periodic pipe is calculated with the transfer matrix (TM) method. A periodic piping experimental system is designed, and the vibration experiment is performed to validate the attenuation ability of the periodic pipe structure. Finally, a finite-element pipe model is constructed using the MSC-Actran software, and the calculated results match well with the vibration experiment. The errors between the theoretical calculation results and the vibration experimental results are analyzed.
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2010, Vol. 27 
