PREDICTION OF WHEEL/RAIL ROLLING-NOISE DURING RAIL TRANSIT

With the actualization of the national higher speed railway program, and the development of passenger lines, the railway noise has impacted heavily on the residents along the lines. In the thesis, based on the basic relations of wheel/rail interaction, considering the effects of the ground reflection, the prediction expressions of the sound pressure level spectrum of the wheel/rail rolling-noise are derived by use of the structural sound radiation theory. In order to demonstrate the accuracy of the model, the calculation results of wheel/rail high-frequency response and wheel/rail noise are compared with the test results in authorized reference. The wheel/rail rolling-noise from existing railways in our country are predicted and measured. The numerical and measurement results are in good coincidance.