Modeling of Vibroacoustic Characteristics of Plate Structures of Vehicles during Abrasive Processing

Abstract

This article presents the modelling of vibroacoustic characteristics, vibration rates of transport vehicle bodies during abrasive processing of welds. Welding is one of the most comprehensive technologies for joining metal structures. However, one of the mandatory steps after welding is the mechanical processing of welded joints. To control the vibroacoustic characteristics, reduce the noise and vibration, energy balance equations are obtained for the conditions of the abrasive treatment of welds in the body of an electric locomotive. The energy flows and sound power emitted by each element of the body structures are determined during the abrasive treatment of welds. Theoretical and experimental assessment of noise and vibration levels during the abrasive processing of welded joints of plate structures is carried out. It is shown that in the frequency range from 0.25 kHz and higher, the sound power exceeds the maximum permissible values.