Methodology of experimental determination of mechanical impedance of vibration-insulating branch pipes taking into account flexibility of test facility at lengthwise vibrations

In the problems of vibration isolation of hydraulic system units, such as pumps, an important role is played by the problem of oscillation propagation through unsupported connections (pipelines). In order to solve this problem, in particular, rubber-cord tubes are used, which vibration-insulating properties are determined by their mechanical impedances. The aim of the work is to obtain the theoretical basis for the development of methods for the experimental determination of mechanical impedance of vibration insulating branch pipes, taking into account the flexibility of elements of the experimental facility in the case of lengthwise vibrations.