According to the basic relations of wheel/rail interaction with spectrum analysis method and considering the area of contact between the wheel and rail,the wheel/rail coupled vibrations excited by the small-scale roug...
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According to the basic relations of wheel/rail interaction with spectrum analysis method and considering the area of contact between the wheel and rail,the wheel/rail coupled vibrations excited by the small-scale roughness of the running surfaces of the wheel and rail are *** formulas of the space-averaged spectra of vertical and lateral vibration level of the wheel and rail are *** only the vertical impedance and lateral impedance of steel rails,but also the radial impedance and axial impedance of wheels are successfully *** the analysis of the steel rails′ vertical impedance,considering the sleepers′ quality and using the model of double-layer continuous resilience foundation beams,the rails are divided into Euler Beams and Timoshenko *** the analysis of the steel rails′ lateral impedance,the rails are regarded as double *** rail heads are considered as Timoshenko girders considering shearing force and rotation and the webs are considered as spring and damp associating heads and *** the analysis of the wheel impedance,the wheel is simplified as an elastic circle loop,which taking the rigidity of web plate into *** tread is regarded as an elastic loop,and the web plate is regarded as a spring component connecting wheel tread and wheel *** on the wheel/rail coupled vibration research,considering the effects of the ground reflection the prediction expressions for the sound pressure level spectrum of the wheel/rail rolling-noise are given by means of the application of the structural sound radiation *** order to demonstrate the accuracy of this expression,the calculation results of wheel/rail high-frequency response and wheel/rail noise are compared with the test results in authorized *** the wheel/rail rolling-noise from existed railways in our country are predicted and *** numerical results and the measured ones agree *** this existing model of wheel/rail rolling noise,t
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