沟槽表面填充材料对界面摩擦振动噪声的影响

发布时间：2018-05-21 04:07

本文选题：摩擦振动 + 摩擦噪声　；参考：《摩擦学学报》2017年05期

【摘要】：采用机械加工方式,在基体(蠕墨铸铁)表面加工出平行且等间距的沟槽,并在沟槽中分别填满铝材料和锻钢材料,对该填充材料试样和基体试样进行界面摩擦噪声试验,并采用数值模拟方法加以分析,得出界面摩擦振动噪声行为在不同沟槽填充材料下的变化特性,并将不同界面摩擦磨损行为与振动噪声动态关联起来.试验及数值模拟结果表明,在沟槽中填充铝材料加剧界面磨损,增大摩擦系数,并加速系统不稳定振动的产生,增大噪声强度,而在沟槽中填充钢材料能有效延缓界面不稳定振动和摩擦尖叫噪声信号的产生.此外,计算结果表明,界面磨擦磨损行为导致的界面接触非线性特性是产生多频率不稳定振动和噪声的重要因素.
[Abstract]:Parallel and equal spacing grooves were machined on the surface of the matrix (vermicular graphite cast iron) by mechanical processing, and the groove was filled with aluminum material and forged steel material respectively. The friction noise test of the interface between the filling material and the matrix sample was carried out. The characteristics of the interface friction vibration and noise behavior under different groove filling materials are obtained by numerical simulation method, and the friction and wear behavior of the interface is correlated with the vibration and noise dynamics. The experimental and numerical simulation results show that filling aluminum materials in grooves increases the wear of the interface, increases the friction coefficient, accelerates the generation of the unstable vibration of the system, and increases the noise intensity. Filling steel in grooves can effectively delay the generation of unstable interface vibration and frictional squeal noise. In addition, the calculation results show that the nonlinear characteristics of interface contact caused by the friction and wear behavior of interface are important factors to produce unstable vibration and noise at multiple frequencies.
【作者单位】：西南交通大学机械工程学院摩擦学研究所;
【基金】：国家自然科学基金项目(51675448,51375408)资助~~
【分类号】：TH117.1

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