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首页> 外文会议>International Symposium on Stability Control of Rotating Machinery(ISCORMA-4); 20070827-31; Calgary(CA) >VIBRATION TRANSMISSION THROUGH BEARINGS WITH APPLICATION TO GEARBOXES
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VIBRATION TRANSMISSION THROUGH BEARINGS WITH APPLICATION TO GEARBOXES

机译：通过轴承的振动传递及其在齿轮箱中的应用

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摘要

Cabin noise has become a major concern to manufacturers and users of helicopters. Gear noise is the largest part of this unwanted sound. The crucial noise path is generally considered to be from the gears through the gear-supporting shafts and bearings into the gearbox case, and from there either through the gearbox mounts or the surrounding air to the helicopter cabin. If the noise, that is, the gear and shaft vibration, can be prevented from traveling through the gearbox bearings, then the noise cannot make its way into the helicopter cabin. Thus the vibration-transmitting properties of bearings are of paramount importance. This paper surveys the literature concerning evaluation of properties for the types of bearings used in helicopter gearboxes. A simple model is proposed to evaluate vibration transmission, using measured or calculated bearing stiffness and damping. Less-commonly used types of gearbox bearings (e.g., fluid film) are evaluated for their potential in reducing vibration transmission.
机译：机舱噪声已成为直升机制造商和用户的主要关注点。齿轮噪音是这种有害声音的最大部分。通常认为，关键的噪声路径是从齿轮经过齿轮支撑轴和轴承进入变速箱壳体，再从那里经过变速箱支座或周围空气到达直升机机舱。如果可以防止噪音（即齿轮和轴的振动）通过变速箱轴承传播，那么噪音就无法进入直升机机舱。因此，轴承的振动传递特性至关重要。本文调查了有关直升机齿轮箱中所用轴承类型的性能评估的文献。提出了一个简单的模型来评估振动传递，它使用测量或计算的轴承刚度和阻尼进行评估。对不太常用的齿轮箱轴承类型（例如，液膜）进行了评估，以评估其在减少振动传递方面的潜力。

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