Abstract
A newly developed technique to analyze structureborne sound transmission in fluid filled piping system elbows based on wave theory is described. It is believed that generalization of the technique can be used to analyze structureborne sound transmission in fluid filled nonplanar piping systems that include bends and branches. To illustrate some of the basic principles of the method, an example is included. The wave theory approach is commonly used in analyzing electromagnetic and acoustic wave transmission in thin waveguides. Use of the technique to analyze structural vibrations is not as common. Other methods used to analyze the dynamics of structures include the differential equation and energy methods. Comparison of the experimental results with that using computational techniques based on the various theories show that the wave theory leads to much more accurate results than the differential equation solution method. Both the differential and the wave theory are based on force and moment analysis usin...
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