Consistency Analysis of Worn Surface Topography and Friction Force Based on Phase Trajectory and Recurrence Analysis

Zuo, Xue; Peng, Minglong; Zhou, Yuankai

doi:10.1142/s0218348x19501305

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…With the increase of correlation dimension, the COF tends to be stable gradually, and the running-in quality is improved. According to [25], the delay time τ and embedding dimension m are determined. The COFs obtained in tests are divided into stages for every 60 s, and the correlation dimension of each stage is calculated.…”

Section: Correlation Dimension Of Cofmentioning

confidence: 99%

Improving running-in quality and efficiency of journal bearing with ZB and SiO₂ nanoparticles as lubricant additive

Zhou¹,

Wang²,

Wang³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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To both improve the running-in quality and efficiency of the journal bearing, the Zinc borate and SiO2 combinations (ZB/SiO2) are used as lubricant additive. Running-in tests were carried out using a ring-on-block tribometer. Multifractal parameters and correlation dimensions were used to extract the nonlinear characteristics of surface topography and coefficient of friction (COF), respectively. It is also used to evaluate the running-in quality of journal bearing. The time of correlation dimension to reach the stable stage is used to evaluate the running-in efficiency. With the addition of ZB/SiO2, the correlation dimension of COF increases and the multifractal parameters of wear surfaces decrease significantly. Compared with the single ZB or SiO2 additive, the running-in efficiency of the ZB/SiO2 additive can be improved by 25% and 40%, respectively. It indicates that the running-in quality and efficiency are improved with the additive of ZB/SiO2. The excellent tribological properties of ZB/SiO2 are attributed to the solid lubricating film formed by ZB, as well as the rolling, self-repairing, and polishing effect of SiO2. The results are of great significance to improving the service reliability and extending the service life of the journal bearing.

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Section: Correlation Dimension Of Cofmentioning

confidence: 99%

Improving running-in quality and efficiency of journal bearing with ZB and SiO₂ nanoparticles as lubricant additive

Zhou¹,

Wang²,

Wang³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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A Recursive Characteristics Analysis-Based Stationarity Evaluation Model for Friction-Induced Attractors in the Sliding Friction Process

Sun

Zhang

et al. 2021

Journal of Tribology

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In this study, the coefficient of friction signals throughout the running-in process were examined by sliding a ring against a static disc. By reconstructing the scalar time-series into multi-dimensional phase-spaces, friction-induced attractors were obtained and quantified by recursive characteristics analysis, which can effectively realize the running-in status identification. Moreover, a recursive characteristics analysis-based evaluation model was established to investigate the stationarity of the friction-induced attractors based on the recurrence quantification analysis (RQA) measures. The analyses of the numerically simulated signals and experimental results indicate that the extracted model is an intuitive and effective method. Furthermore, to improve the stationary of the friction-induced attractors, the normal pressure should be low, whereas the relative sliding velocities should be increased appropriately. These results would contribute to the revelation of the recursive characteristics of the tribosystem, and the improvement of the stationarity of friction-induced attractors.

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Influences of Embedding Parameters and Segment Sizes in Recursive Characteristics Analysis on Coefficients of Friction

Sun

Zhang

Zhu

et al. 2021

Int. J. Bifurcation Chaos

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The methods of recurrence plots (RPs) and recurrence quantification analysis (RQA) have been used to investigate the tribosystem. The morphology of RPs and RQA measures are strongly dependent on the embedding parameters of the recursive matrix and the segment sizes of the time-series. To improve the calculation accuracy of recursive characteristics analysis, the influences of the embedding parameters and segment sizes on the morphology of RPs and RQA measures have been studied in this letter. Three kinds of theoretical chaotic time-series and measured coefficient of friction (COF) signals during the running-in process were chosen as research objects, and the morphology of RPs and RQA measures were obtained using CRP toolbox afterward. The results indicate that no embedding was actually needed if the data sets are to be qualitatively analyzed using RPs and RQA. Additionally, the morphology of RPs and RQA measures are sensitive to the segment sizes for theoretical chaotic time-series, while the RQA measures of COF signal in the steady-state period are rather stable due to its self-similarity. Finally, according to the guidelines of the parameter settings, the dynamical evolution of measured COF signals during the running-in process have been investigated. It is indicated that recursive characteristics of COF signals could reveal the tribological behaviors’ evolution and conduct the running-in status identification. The results in this paper are significant for improving the calculation accuracy and saving computational time when using the method of recursive characteristics analysis on the tribological behaviors.

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Consistency Analysis of Worn Surface Topography and Friction Force Based on Phase Trajectory and Recurrence Analysis

Cited by 4 publications

References 24 publications

Improving running-in quality and efficiency of journal bearing with ZB and SiO₂ nanoparticles as lubricant additive

Improving running-in quality and efficiency of journal bearing with ZB and SiO₂ nanoparticles as lubricant additive

A Recursive Characteristics Analysis-Based Stationarity Evaluation Model for Friction-Induced Attractors in the Sliding Friction Process

Influences of Embedding Parameters and Segment Sizes in Recursive Characteristics Analysis on Coefficients of Friction

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Consistency Analysis of Worn Surface Topography and Friction Force Based on Phase Trajectory and Recurrence Analysis

Cited by 4 publications

References 24 publications

Improving running-in quality and efficiency of journal bearing with ZB and SiO2 nanoparticles as lubricant additive

Improving running-in quality and efficiency of journal bearing with ZB and SiO2 nanoparticles as lubricant additive

A Recursive Characteristics Analysis-Based Stationarity Evaluation Model for Friction-Induced Attractors in the Sliding Friction Process

Influences of Embedding Parameters and Segment Sizes in Recursive Characteristics Analysis on Coefficients of Friction

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Product

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Improving running-in quality and efficiency of journal bearing with ZB and SiO₂ nanoparticles as lubricant additive

Improving running-in quality and efficiency of journal bearing with ZB and SiO₂ nanoparticles as lubricant additive