RESEARCH PAPERS: Vibration and Sound

Wave Propagation and Attenuation in Piping Systems

[+] Author and Article Information
Shiran Nanayakkara

Department of Mechanical Engineering, Lehigh University, Bethlehem, PA 18015

N. Duke Perreira

Manufacturing Systems Engineering and Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015

J. Vib., Acoust., Stress, and Reliab 108(4), 441-446 (Oct 01, 1986) (6 pages) doi:10.1115/1.3269368 History: Received June 20, 1986; Online November 23, 2009


Results of an investigation on wave propagation in two-dimensional fluid-filled piping systems is reported. This phenomenon is studied by first developing a model for the transmission of solid-borne and fluid-borne vibrations in fluid-filled piping system elements, such as bends and straight sections. The aforementioned model, which is represented by an element transmission matrix, is used to determine the transfer and point impedances between the motion and forces of both the pipe and the fluid at any point within the element. It allows for longitudinal vibrations in the fluid, and longitudinal and bending vibrations in the solid portion of the system. The effects of both shear strains and rotary inertia within the pipe are included, while the effects of fluid flow and radial or angular modes in the fluid are neglected. Computer results for two-dimensional piping systems with modes of vibration in the plane of the pipes are considered. This method which is exact, except for possible computational errors, can be easily extended to the three-dimensional case.

Copyright © 1986 by ASME
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