The complex analysis of tram noise in relation to changes in dynamic mobility of tram wheel

摘要

Tram wheels are equipped in different kind of mobile inserts which affect to dynamic and construction features of vehicle. The main aim of these elements is to decrease vibroacoustics effects affecting to the urban environment. Changes of dynamic mobility characteristics of tram wheel are influenced to vibroacoustic activity of light rail vehicles in operating condition. In article is presented the complex tram noise analysis in relation to different kind of dynamic mobility of tram wheel. Four series of tram noise measurements were carried out according to pass-by method. Firstly, tram wheels were equipped in the conventional inserts and the bogie covers were mounted on vehicle. Secondly, tram wheels were the same but bogie covers were removed. Then the testing inserts were equipped in tram wheels and two more measurement series were carried out: with and without bogie converts. The impact of bogie covers on emitted tram noise was analyzed. The complex analysis of tram noise includes an acoustic signals recorded in one measurement point, in according with ISO 3095 standard. Furthermore the paraseismic vibrations were measured. Tram speed was constant during research. The main aim of analysis was to compare in terms of qualitative and quantitative acoustic signals emitted by vehicle equipped in different inserts inside the tram wheels.