美利体育登录入口官网:BS EN 15461:2008+A1:2010(2011)
铁路应用 — 噪声发射 — 用于通过噪声测量的轨道选择的动态特性表征
Railway applications — Noise emission — Characterization of the dynamic properties of track selections for pass by noise measurements
- 标准号
- BS EN 15461:2008+A1:2010(2011)
- 发布
- 2011年
- 总页数
- 22页
- 发布单位
- 英国标准学会
- 当前最新
- BS EN 15461:2008+A1:2010(2011)
- 引用标准
- BS EN 15461:2008+A1:2010 EN 61260 EN ISO 266 EN ISO/IEC 17025 ISO 2041 ISO 7626-1 ISO 7626-5
- 本体
- 铁路轨道
- 适用范围
- This European Standard specifies a method for characterizing the dynamic behaviour of the structure of a track relative to its contribution to the sound radiation associated with the rolling noise. This European Standard describes a method for: a) acquiring data on mechanical frequency response functions on a track; b) processing measurement data in order to calculate an estimate of the vibration decay rates along the rails in an audible frequency range associated with the rolling noise; c) presenting this estimate for comparison with the lower limits of the decay rates. It is applicable for evaluating the performance of sections of reference tracks for measuring railway vehicle noise within the framework of official approval tests. The method is not applicable for characterizing the vibration behaviour of tracks on loadbearing structures such as bridges or embankments.
| 术语 | 描述 |
|---|---|
| 频率响应函数 (FRF) Frequency Response Function | 频率依赖性比率，表示机械系统中激励力与响应之间的关系。 |
| 加速度率 Accelerance | 在单个谐波运动中，同一位置或不同位置的加速与激励力的比值。 |
| 传递函数 (Transfer FRF) Transfer Frequency Response Function | 测量点与施加力点位置不同的频率响应函数。 |
| 结构波振动 Structural Wave Vibration | 沿轨道传播并导致整个轨道截面变形的波，包括垂直和横向弯曲波。 |
美利体育登录入口官网: BS EN 15461:2008+A1:2010(2011) 中提到的仪器美利体育官网首页网址
| 加速度计 | 用于固定在轨道上测量振动响应，分为垂直和横向方向。 |
| 带激励器的锤子 (instrumented hammer) | 用于施加激励力以激发轨道结构振动。 |