The driving noise of a new type 160 modular bridge expansion device was studied.The transient analysis of the overall structure and the modal analysis of the center beam and side beam section steel were used to determine the system response laws when vehicles passing by in different working conditions through ANSYS.Then the response law is converted into acoustic excitation and acoustic analysis is performed using the Harmonic Acoustic module in ANSYS workbench by combining the finite element method(FEM.)and the boundary element method(BEM)to obtain the A sound level curve at different far fields in the human ear the most sensitive frequency range,the maximum A sound level occurrence frequency and the suitable installation position for the expan-sion device.A comparison is made with the literature test results to verify the reliability of the simulation results.The results show that the above method can effectively evaluate the driving noise of expansion devices,and the result has high reliability.
关键词
模数式伸缩装置/多种复杂工况/有限元法/动态特性分析/边界元法/A声级曲线
Key words
Modular Expansion Devices/Multiple Working Conditions/Finite Element Method/Dynamic Analysis/Boundary Element Method/A Sound Level Curve
维普
万方数据