Abstract
AbstractThe free stress and pressure waves in fluid filled piping are investigated numerically. The motivation of this work is to find measures and rules for the low frequency vibration and noise reduction for piping designers. The Timoshenko beam equation and extended water hammer equation are used to calculate the transfer matrix of two piping configurations. And the wave propagation constants are then obtained by get the eigenvalue of the transfer matrix. It’s found that when the support stiffness reaches a critical value k c the piping will be a long bend wave filter. It’s the same as obtained by increasing the support distance. The flexible hose shows good performance in controlling both stress and pressure waves, but the support shows insignificant capability in pressure wave reduction.KeywordsWave propagationPipe supportFlexible hoseVibration reduction
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