华东交通大学学报Issue(1)：7-12,6.
轨面短波不平顺时域反演算法研究
Time Domain Inversion Algorithm for Rail Surface Irregularities
摘要
Abstract
Rail surface shortwave irregularities not only have enormous impact on wheel/rail noise,but also bring huge dynamic damage to vehicle and track components. In order to obtain the representative time domain waveform for further study of wheel/rail noise and wheel/rail interface simulation,a time domain inversion al-gorithm of rail surface irregularities based on rail roughness level spectrum has been put forward. The algorithm provided at the same time has a certain randomness due to its phase randomness in the inversion process. The al-gorithm is then used to implement the ISO3095 standard spectrum and measured spectrum on Shanghai Metro. Results show that the inversion algorithm is feasible and correct,which can be used as excitation input of wheel/rail dynamics simulation model and initial datum of rail surface irregularities prediction model.关键词
轨面短波不平顺/时域反演算法/粗糙度水平谱/1/3倍频程Key words
rail surface irregularities/time domain inversion algorithm/roughness level spectrum/1/3 octave分类
交通工程引用本文复制引用
毛晓君,周宇,许玉德..轨面短波不平顺时域反演算法研究[J].华东交通大学学报,2014,(1):7-12,6.基金项目
国家自然科学基金(50908179) （50908179）
