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首页> 外文期刊>Journal of vibration and control: JVC >Gear Surface Roughness Induced Noise Prediction Based on a Linear Time-varying Model with Sliding Friction
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Gear Surface Roughness Induced Noise Prediction Based on a Linear Time-varying Model with Sliding Friction

机译：基于线性时变滑移摩擦模型的齿轮粗糙度诱导噪声预测

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摘要

This article presents a new gear surface roughness induced noise source model while taking into account the sliding contacts between meshing gear teeth. The surface asperities on tooth surfaces are modeled as compact structural beam elements that radiate sound in the off-line of action after sliding impacts, against asperities of the meshing surface, occur. A linear time-varying (LTV) model of a spur gear pair (with sliding friction) is employed to calculate the instantaneous sliding velocity between pinion and gear teeth, which is then applied to the asperities as the initial condition. The transient sound field from the flexural motions of surface asperities (acoustically baffled along their axes), which are released from the cylindrical Hertzian contact zone in gear teeth, is computed. The modal superposition method is used for far and free field calculations given the surface roughness and its (assumed) asperity distribution on the tooth profile. Typical sound pressure predictions show that the noise levels increase with operating speeds and surface roughness.
机译：本文提出了一种新的齿轮表面粗糙度引起的噪声源模型，同时考虑了啮合齿轮齿之间的滑动接触。牙齿表面的表面凹凸被建模为紧凑的结构梁单元，该结构梁单元在发生滑动冲击后，会随着啮合的表面的凹凸而在离线状态下辐射声音。正齿轮副（带有滑动摩擦）的线性时变（LTV）模型用于计算小齿轮和轮齿之间的瞬时滑动速度，然后将其作为初始条件应用于粗糙体。计算了从齿轮齿中的圆柱赫兹接触区域释放出来的表面粗糙（沿其轴线听障）弯曲运动产生的瞬态声场。给定表面粗糙度及其在齿廓上的（假定）粗糙分布，模态叠加法可用于远场和自由场计算。典型的声压预测表明，噪声水平会随着工作速度和表面粗糙度的增加而增加。

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