Evaluation of adequacy of analytical expressions for vibrations of pipeline under shock effect

Abstract

The paper presents two analytical expressions for modeling pipeline oscillations as a result of a shock effect, which allow
testing the vibroacoustic signal processing algorithms to detect unauthorized connections. The calculation and assessment of the adequacy of the models by comparing the pulse shapes and their amplitude-frequency spectrum with the experimental ones obtained on a five-meter pipe and the operating pipeline 200 m long has been implemented. The model designated in the paper as «complete» shows the most reliable results when calculating the oscillations of both the pipe layout and the long active pipeline with interference applied.