Numerical Simulation of the Vibration and Structure-Borne Noise of the Viaduct
Based on the combination of finite element software ANSYS and acoustics software LMS Virtual.Lab Acoustics, this paper makes an analysis of the Vibration and sound radiation of the viaduct of urban rail transit.First of all, transient dynamic analysis of three-dimensional model of box girder was made in ANSYS, with train passing bridge simulated as a moving load or a moving mass-spring system.Then vibration displacement response obtained is taken as boundary condition of outer sound field, which can achieve accurate acoustic response in Virtual.Lab Acoustics.According to comparing the results of the two different models, we can draw that the noise pressure with the moving mass-spring system is higher than the other, and the noise pressure range is from 70 to 95 in decibels.Using the transient boundary element module of LMS Virtual.Lab Acoustics can solve engineering problems in time domain, with simulating the vibration properly.
Vibration and Wave Viaduct Numerical Simulation Structure-Borne Noise
Jing Li Nan Zhang
School of Civil Engineering,Beijing jiaotong University,Beijing 100044,China
国际会议
上海
英文
401-405
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）