The fractal leakage model of contact mechanical seals considering wear and thermal deformation

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Abstract

At present, the effects of seal surface morphology, wear and thermal deformation on leakage are neglected in most studies about the contact mechanical seals, and the influence of surface topography is not considered from the microscopic perspective. In this paper, based on fractal theory, the contact between surfaces of dynamic and static rings is simplified to the contact between the rough surface and the ideal rigid plane. The leakage model, wear model and thermal deformation model of the contact mechanicals seal are established, and the fractal leakage model considering wear and thermal deformation is established by taking them all into consideration. Finally, according to the established model, the effects of fractal parameters, specific load and material parameters on the leakage are analyzed to obtain the conclusion that the fractal leakage model of contact mechanical seals considering wear and thermal deformation is of great significance for predicting the safe operation of contact mechanical seals. And the accuracy of the model is verified by comparing the model data with the experimental data.

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Li, X., Yang, Z., Xu, J., Chen, R., & Yang, H. (2019). The fractal leakage model of contact mechanical seals considering wear and thermal deformation. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 41(11). https://doi.org/10.1007/s40430-019-2026-y

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