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首页> 外文期刊>International journal of mechanical engineering research >Theoretical Research of Noise and Vibration Spectra in Cabins of Locomotive and Diesel Shunting Locomotive
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Theoretical Research of Noise and Vibration Spectra in Cabins of Locomotive and Diesel Shunting Locomotive

机译：机车和柴油机山上山上噪声和振动光谱的理论研究

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It showed that the statistical analysis of the occupational diseases of the drivers and locomotive crews was 70% and associated with noise exposure (noise sickness), and 15.5% connected with diseases of the musculoskeletal system which was determined by the impact of vibrations. Consequently, 85.5% of the occupational diseases of drivers and locomotive crews were determined by the influence of vibroacoustic characteristics of the elevated levels. Therefore, the researches aim at a theoretical description of the processes of the excitation of vibration and noise emissions in workplaces of the locomotive brigades are relevant and have great scientific, engineering and socio-economic importance. In addition, it should be noted that the tiredness of drivers was primarily determined by the impact of vibration and acoustic characteristics that had negative affect on safety of traffic transport vehicles. The processes of the noise emissions have been studied with reference to the cabs of road-building machines and electric locomotives. The article under consideration also points out that the nature of the sources of noise and vibration spectra in locomotive and diesel shunting locomotive has significant differences, in particular, the internal combustion engine is a complex aggregate that generates increased noise and vibration levels in the workplaces of locomotive crews. Acoustic impact of the internal combustion engine (ICE) is formed by the influence of the exhaust noise, the noise of its frame, the sound emission and the sound energy passed through the hood. An important role is played by the sound emission from the hood due to vibration (structural noise component). Simultaneous sound radiation from these sources has not been adequately studied at present time. The rational selection of sound-absorbing and sound-insulating structures can be justified only on the basis of theoretical research of the influence of the air component of noise which is presented in this article.
机译：结果表明，司机和机车船员的职业疾病的统计分析为70％，与噪音暴露（噪音疾病）相关，与肌肉骨骼系统的疾病有关的15.5％，由振动的影响决定。因此，85.5％的司机和机车人员的职业疾病是由升高水平的影响的影响决定。因此，研究旨在对机车旅的工作场所激发振动和噪声排放过程的理论描述相关，具有很大的科学，工程和社会经济重要性。此外，应该指出的是，驾驶员的疲劳主要是由对交通运输车辆安全性产生负面影响的振动和声学特性的影响。已经参考道路建筑机器和电力机车的驾驶室研究了噪声排放的过程。所考虑的文章还指出，机车和柴油旋转机车中噪声和振动光谱来源的性质具有显着的差异，特别是内燃机是一种复杂的聚集体，其在工作场所产生增加的噪声和振动水平机车人员。内燃机（冰）的声学冲击由废气噪声的影响，其框架的噪声，声音发射和通过引擎盖的声音的影响形成。由于振动（结构噪声分量），引擎盖的声音发射了重要作用。目前没有充分研究来自这些来源的同时声辐射。吸音和隔音结构的合理选择只有基于本文中提出的噪声空气分量的影响的理论研究。

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