CAJ | 학술논문

轨面短波不平顺对轮轨噪声、车辆轨道各部件的动力学破坏作用巨大，为得到其具有代表性的时域波形，并进一步研究轮轨振动噪声和轨面状态仿真分析提供基础，提出一种基于轨面粗糙度水平谱反演短波不平顺时域波形的算法。由于反演过程中相位的随机性，使该算法在保证代表性的同时又具备一定随机性。在此基础上，用该算法实现了ISO3095标准谱与上海轨道交通实测谱的反演，结果表明反演算法可行且正确，反演得到的轨面短波不平顺时域波形可作为轮轨动力学仿真模型的激励输入，也可为预测轨面不平顺发展提供初始数据。
궤면단파불평순대륜궤조성、차량궤도각부건적동역학파배작용거대，위득도기구유대표성적시역파형，병진일보연구륜궤진동조성화궤면상태방진분석제공기출，제출일충기우궤면조조도수평보반연단파불평순시역파형적산법。유우반연과정중상위적수궤성，사해산법재보증대표성적동시우구비일정수궤성。재차기출상，용해산법실현료ISO3095표준보여상해궤도교통실측보적반연，결과표명반연산법가행차정학，반연득도적궤면단파불평순시역파형가작위륜궤동역학방진모형적격려수입，야가위예측궤면불평순발전제공초시수거。
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.