New Fractal Contact Model Considered Multi-scale Levels

被引：1

作者：

Yun R. ^{[1
]}

Ding B. ^{[2
]}

机构：

[1] School of Energy and Power Engineering, Beihang University, Beijing

[2] School of Airport, Civil Aviation University of China, Tianjin

来源：

Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2019年 / 55卷 / 09期

关键词：

Asperity; Contact model; Elastic-plastic; Multi-scale levels; Rough surfaces;

D O I：

10.3901/JME.2019.09.080

中图分类号：

学科分类号：

摘要：

A new elastic-plastic model for contact of rough surfaces is presented. The model based on the traditional contact theory of Hertz and the presented fractal contact models is developed. Research the regularity of the contact condition of micro-bulge, considered on the multi contact asperity in different fractal parameters in the first detail. Then, to modify the contact areas by considering the multi-scale levels and a new way use to calculate the distribution function. The model developed evaluates that the multi-scale parameter will influence the values of critical contact parameters, the deformation of contact area will be the conditions of elastic, elastic-plastic and plastic successively and the effect factor has relationship with G and D. Besides, by considering the effect factor and using new distribution function, the new model gains the more precise results than the model of GW and MB. It is show that the predict values from present model is fitting closer than the values from MB model and GW model to the results of Bhushan' experimental observation. The comparison results strongly indicate that the new model is more reasonable in describing the contact behavior between rough surfaces. © 2019 Journal of Mechanical Engineering.

引用

页码：80 / 89

页数：9

共 29 条

[1]

Chen Q., Huang S., Zhang Z., Et al., Research on fractal contact model for contact carrying capacity of two cylinder's surfaces considering friction factors, Journal of Mechanical Engineering, 52, 7, pp. 114-121, (2016)

[2]

Wei L., Zhang P., Liu Q., Et al., Influencing factors analysis and experiments of friction coefficient between the end faces for contact mechanical seals, Tribology, 36, 3, pp. 354-361, (2016)

[3]

Ji Z., Sun J., Lu J., Et al., Predicting method for static leakage of contacting mechanical seals interface based on percolation theory, Tribology, 37, 6, pp. 734-742, (2017)

[4]

Tian X., Wang W., Fu W., Et al., Contact stiffness model of mechanical joint surfaces considering the asperity interactions, Journal of Mechanical Engineering, 53, 17, pp. 149-159, (2017)

[5]

Greenwood J.A., Williamson J.B.P., Contact of nominally flat surfaces, Proceedings of the Royal Society of London, 295, 1442, pp. 300-319, (1966)

[6]

Whitehouse D.J., Archard J.F., The properties of random surfaces of significance in their contact, Proc. Roy. Soc., 316, 1524, pp. 97-121, (1970)

[7]

Nayak P.R., Random process model of rough surfaces in plastic contact, Wear, 26, 3, (1971)

[8]

Bush A.W., Gibson R.D., Thomas T.R., The elastic contact of a rough surface, Wear, 35, 1, pp. 87-111, (1975)

[9]

Ciavarella M., Greenwood J.A., Paggi M., Inclusion of "interaction" in the Greenwood and Williamson contact theory, Wear, 265, 5-6, pp. 729-734, (2008)

[10]

Zhao Y., Maietta D.M., Chang L., An asperity microcontact model incorporating the transition from elastic deformation to fully plastic flow, Journal of Tribology, 122, 1, pp. 86-93, (2000)

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