TY - JOUR AU - Chowdhury, N.M. Alam AU - Liao, Zaiyi AU - Zhao, Lian AU - Ramakrishnan, Ramani PY - 2009/09/01 Y2 - 2024/03/28 TI - Eigenfrequency analysis of fluid-filled pipes JF - Canadian Acoustics JA - Canadian Acoustics VL - 37 IS - 3 SE - Proceedings of the Acoustics Week in Canada DO - UR - https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2162 SP - 118-119 AB - A study was conducted to perform eigenfrequency analysis of fluid-filled pipes. The fundamental element of such an analysis was to investigate the eigenfrequency of the wave propagation impacted by the complexity of fluid medium surrounded by a large concrete pipe buried in the ground. The mathematical model was developed using Navier's equation of motion for acoustic wave in frequency domain. The interaction between the fluid and the surrounding layers were modeled based on Newton's law of motion and principle of virtual work. It was observed that the wire break or slip generated acoustic signal propagated through the pipe structure and the fluid in the pipe. The model was simulated for the rigid and elastic pipe with infinite and finite stiffness along with various dimensions of pipe and medium characteristics. ER -