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A numerical model able to simulate the Mixed Lubrication regime is developed. It is governed by the Reynolds equation in Elasto-Hydrodynamic mode and the contact equation, where the transition between lubricated and contact areas is managed by a transition function leading to a global set of nonlinear equations. The surfaces’ deformability is evaluated with the Boundary Element Method. The roughness is generated by the Random Mid-Point algorithm which models fractal surfaces. Firstly, the model is applied to a fixed spherical asperity pushed against a moving plane and a sensitivity analysis is conducted. Finally, the model is applied to a fixed rough surface pushed against a moving plane and the results are compared to the Dry Contact case.

Investigation of dynamic characteristic coefficients for water-lubricated rubber bearings under low-speed and high-load conditions

Pub Date: 2025-09-16 DOI: https://doi.org/10.1016/j.triboint.2025.111210

[Renpan Li Corresponding Author, Guangwu Zhou Corresponding Author, Luole Du Corresponding Author, Qinghua Zhou Corresponding Author, Rongsong Yang Corresponding Author, Jiaxu Wang Corresponding Author]

THE TRIBOLOGICAL PROPERTIES OF MIXED ZINC SULFIDE AND REDUCED GRAPHENE OXIDE AS LUBRICANT NANO ADDITIVES

Pub Date: 2025-09-16 DOI: https://doi.org/10.1016/j.triboint.2025.111210

[Mohamed Ahmed Ramadan Corresponding Author, Mostafa Maher Corresponding Author, Hanafy Mansour Corresponding Author, Waheed Yousry Ali Corresponding Author]

Numerical investigation on lubrication of reciprocating seals for metal rectangular packing based on an improved mixed EHL method

Pub Date: 2025-09-16 DOI: https://doi.org/10.1016/j.triboint.2025.111210

[Zhihan Fan Corresponding Author, Hui Wang Corresponding Author, Limin Zhang Corresponding Author, Tingting Guan Corresponding Author, Xiaoshuai Yuan Corresponding Author, Hao Zhang Corresponding Author]