The final NO-WEAR state due to dual-mode fretting: Numerical prediction and experimental validation
The final NO-WEAR state due to dual-mode fretting: Numerical prediction and experimental validation
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DOI：
10.1016/j.wear.2020.203402
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发表时间：
2020-10
期刊：
影响因子：
5
通讯作者：
A. Dmitriev;L. Voll;V. Popov
中科院分区：
文献类型：
--
作者：
A. Dmitriev;L. Voll;V. Popov
我们研究了由于相对于接触面的法向和切向的叠加振动引起的微动磨损(双模微动磨损)。在无限时间的限制下，压头轮廓趋于极限形状，不会进一步改变。对于轴对称轮廓线，解析地求出了法向和切向两种不同的振动频率和振幅的一般情况下的极限形状。磨损量与频率比的关系是非常奇异的，在小的有理频率比下表现出明显的极小值。针对频率重合的特殊情况，对微动过程进行了解析和实验研究。实验结果与理论预测的比较表明，定性和定量(实验噪声阶数的差异)具有很好的一致性。
We study fretting wear due to superimposed oscillations in the normal and tangential directions with respect to the contact plane (dual mode fretting wear). In the limit of infinite time, the profile of the indenter tends to a limiting shape, which does not change further. For axisymmetric profiles, the limiting shape is found analytically for the general case of two different frequencies and amplitudes of oscillations in normal and tangential direction. The dependence of worn volume on the frequency ratio is strongly singular showing sharp minima for small rational ratios of frequencies. For the special case of coinciding frequencies, the fretting process was studied both analytically and experimentally. Comparison of experimental results with theoretical predictions showed a good qualitative and quantitative agreement (discrepancy of the order of experimental noise).