TRANSMISSION OF VIBRATIONS AND NOISE FROM THE PRIMARY SOURCE OF THE TANK WAGONS

The research, of which this article is a part, deals with the design, implementation and verification of the methodology of measuring the transmission of vibro-sound energy from the contact of the tread profile with the rail through the primary suspension blocks, side bearers, bogie pivot and brake system to the tank shell and measuring the generation of sound energy by the wagon bogie. It analyses the frequency distribution of vibro-sound energy of individual blocks (components) of the tank wagon and the intensity of vibration transmission by these blocks until the mounting of the tank shell. Using frequency spectra, the transmission loss of individual bogie blocks and tank at a maximum speed of 120 km/h is displayed. The measurement methodology, measured amplitudes and frequency distribution of vibrations and noise in motion are the basis for reducing the vibro-sound energy not only of the developed prototype tank wagon, but also of railway wagons with a similar bogie. As part of scientific research, the proposed methodology was also successfully applied to solving the dynamic load of high-speed spinning headstocks used in the textile industry.