Accelerated Wear Test Design Based on Dissipation Wear Model Entropy Analysis under Mixed Lubrication

Li, Hong-Ju; Liu, Ying; Liao, Haoran; Liang, Zhurong

doi:10.3390/lubricants10040071

Cited by 6 publications

(2 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This wear model connects the wear volume with the shear collision energy, and its accuracy has been verified by experiments in a laboratory-scale planetary ball mill. An accelerated wear test design method based on dissipation wear model entropy analysis under mixed lubrication was proposed by Li et al [20]. However, most wear-related studies use the Archard wear law.…”

Section: Introductionmentioning

confidence: 99%

Suggestion of Practical Application of Discrete Element Method for Long-Term Wear of Metallic Materials

Lee

Hwang

2022

Applied Sciences

View full text Add to dashboard Cite

This study presents a simulation procedure for the wear of metallic materials exposed to long-term cumulative contact forces and introduces a numerical analysis procedure using the discrete element method (DEM) to predict the wear damage. Since the DEM can calculate the motion and contact load of each particle and the interaction between particles for each dynamic collision of particles, it was possible to analyze the motion of the particles causing metal wear. A method to reflect particle size, material properties, and long-term cumulative friction distance required by the DEM was proposed so that the collision and friction load between particles can be predicted practically. Considering the feature of wear suggested by Archard, it was shown that the wear amount can be predicted efficiently by converting the long-term load into an equivalent material constant. In addition, it was suggested that it is reasonable to determine the size of the particles in consideration of the size of the surface mesh of the metal surface. The accuracy of the analysis results obtained using the procedure proposed in this study was compared with that of the wear test results of metal material specimens presented by former studies. The numerical analysis was also performed in the reference study, but inaccurate results were derived compared to the analysis results. The reason for the inaccuracy of the numerical model performed in the previous study was found to be environmental factors that cannot be considered in a numerical analysis. In this study, it was determined that it was because the behavior of particles and the load transferred to the specimen were not well simulated, which remains a problem for future research. As a result, it was confirmed that it is possible to compute a worn shape similar to the measured shape of experiments. Thereafter, the change in the contact load predicted by simulation is discussed in terms of wear shape and cross-sectional area loss ratio.

show abstract

Section: Introductionmentioning

confidence: 99%

Suggestion of Practical Application of Discrete Element Method for Long-Term Wear of Metallic Materials

Lee

Hwang

2022

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…An analysis of recent publications on the use of mathematical models for predicting the reliability and service life of tribosystems at the stage of development and design allows us to conclude that entropy analysis is promising in the study of energy dissipation during friction [3][4][5][6]. For example, in [4], a mathematical model for predicting the reliability of rolling bearings is developed on the basis of the hierarchical Bayesian method of maximum entropy.…”

mentioning

confidence: 99%

Methodological Approach in the Simulation of the Robustness Boundaries of Tribosystems under the Conditions of Boundary Lubrication

et al. 2023

View full text Add to dashboard Cite

In the presented work, a methodical approach was developed for determining rational operation modes of tribosystems, taking into account their design. This approach makes it possible in the designing stage, according to the predicted operating modes, to calculate the limits and margins of stable work in operation. The definition of the robustness of the tribosystem and the criteria for assessing the robustness are formulated based on the theory of stability of technical systems. It is shown that such a methodical approach allows for determining the modes of the rational operation of the designed structures without damaging the friction surfaces. Experimental studies have proven that not all designs of tribosystems lose stability due to the appearance of friction surface burrs. There are designs where the loss of stability occurs upon the appearance of accelerated wear. The developed criteria take into account two options for the loss of stability. An experimental verification of the modes of loss of stability of tribosystems was performed by the appearance of a burr or the beginning of accelerated wear with the calculated values of the robustness criteria. The obtained results allow us to conclude that the modeling error is within 8.3–18.7%, which is a satisfactory result in the study of friction and wear processes. Robustness criteria is based on the coefficient of friction RRf and wear rate RRI, and must be used when designing new constructions of tribosystems. Theoretical calculations of such criteria and the dependence of their change on changing the predicted operating modes will allow for justifying rational operating modes within their stability.

show abstract

Wear Stage Judgment and Wear Failure Prediction Based on Dissipative Theory of Wear

Liao,

Liu,

et al. 2023

Mechanisms and Machine Science

View full text Add to dashboard Cite

Accelerated Wear Test Design Based on Dissipation Wear Model Entropy Analysis under Mixed Lubrication

Cited by 6 publications

References 34 publications

Suggestion of Practical Application of Discrete Element Method for Long-Term Wear of Metallic Materials

Suggestion of Practical Application of Discrete Element Method for Long-Term Wear of Metallic Materials

Methodological Approach in the Simulation of the Robustness Boundaries of Tribosystems under the Conditions of Boundary Lubrication

Wear Stage Judgment and Wear Failure Prediction Based on Dissipative Theory of Wear

Contact Info

Product

Resources

About