| 轨道交通车辆车轮踏面短波不平顺测试与分析 |
| Measurement and Analysis of Wheel Surface Short Wavelength Irregularity of Rail Transit Vehicle |
| 投稿时间：2009-11-23 |
| 中文关键词:轮踏面 短波不平顺 直接测量法 间接测量法 Pits Spikes |
| 英文关键词:wheel surface short wavelength irregularity DRM IDRM Pits Spikes |
| 基金项目:国家自然科学基金资助项目（50878158） |
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| 中文摘要: |
| 城市轨道交通轮轨表面短波不平顺是激发线路沿线振动与噪声的主要原因，准确而高效的测量轮轨表面短波不平顺是振动噪声预测、评估及源头控制的重要条件。通过对上海城市轨道交通２号线部分车辆轮踏面不平顺进行现场测试，利用统计分析、1/3倍频和功率谱分析研究了轮踏面不平顺时、频域组成特性。结果表明所测试的轨道交通车辆轮踏面不平顺水平是比较低的，大部分不平顺幅值积聚在3～13 μm ；在短波范围内，波长大于4.0 cm时不平顺状态比ISO3095标准要好，小于2.5 cm时不平顺状态较标准差；主要波长分布在57.7～95.2 cm，且大部分集中在70～80 cm，平均值为72.1 cm。 |
| 英文摘要: |
| Short wavelength irregularity of wheel/rail surface is the main reason of vibration and noise of railway alongside vicinity. Therefore, measuring the short wavelength irregularity of wheel/rail surface accurately and efficiently has a profound influence on prediction, assessment and source controlling of vibration and noise. Based on the field measured wheel surface roughness data of trains running in Line 2 of Shanghai Urban Rail Transit, such methods as statistics analysis combined with one third octave analysis and PSD analysis have be employed in this paper. Through this research, the below conclusions are drawn: In time domain, the peak value of most wheels’roughness range from 3μm to 13μm. In frequency domain, when the wavelength of irregularity exceeds 4.0 cm, the one third octave value is much smaller than the ISO3095 standard, which means the wheel surface is rather smooth; however, when the wavelength is below 2.5 cm, the one third octave value exceeds the standard. The main wavelengths which devote most to the PSD range from 57.7 cm to 95.2 cm. Especially, most of them are in the range from 70 cm to 80 cm, averaged 72.1 cm. |
| 程小平,练松良,陈敏敏.轨道交通车辆车轮踏面短波不平顺测试与分析[J].石家庄铁道大学学报(自然科学版),2010,(1):6-10,46. |
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