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A Mathematical Model for the Mixed Lubrication of Non

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Prediction of Sliding Friction Force of Rough Surfaces in .

A mixed lubrication model,based on an unified Reynolds equation in all lubrication regimes including elastohydrodynamic,mixed and boundary lubrication,for prediction of the ...

1. Introduction - Hindawi Publishing Corporati

Wei et al. [19] proposed a mathematical model including the Reynolds equation, the particle load carrying equation, the asperity contact equation, and the heat balance equation in order to simulate the mixed liquid-solid lubrication. The effects of the mixed liquid-solid lubricant, the particle diameter and mass concentration, the surface ...

Numerical investigation of tribological performance in .

Numerical investigation of tribological performance in mixed lubrication of textured piston ring-liner conjunction with a non-circular cylinder bore. ... A 2D mixed lubrication model, which consists of a generalized Reynolds equation ... Mathematical model 2.1. Ring surface texturing.

Penn State Engineering: MNE Directo

Liming Chang and Y. R. Jeng, 2014, "A mathematical model for the mixed lubrication of non-conformable contacts with asperity friction, plastic deformation, flash temperature and tribo-chemistry", ASME Journal of Tribology, 136, pp. 022301

Thermal and non-Newtonian analysis on mixed liquid–solid .

A mathematical model containing Reynolds equation, particle load carrying equation, asperity contact equation and heat balance equation is constructed to simulate the mixed liquid–solid lubrication.

A simple deterministic plastoelastohydrodynamic .

A new efficient plastoelastohydrodynamic mixed lubrication model is illustrated. ... the mathematical model is presented with emphasis on the numerical implementation. ... Plastic deformation model and algorithm. Plasticity is a non-linear phenomenon and the calculation of plastic deformation is a fairly complex problem. For engineering ...

Journal Bearings Lubrication Aspect Analysis Using Non .

The aim of this work is related to an analysis of journal bearings lubrication using non-Newtonian fluids which are described by a power-law model. The performance characteristics of the journal bearings are determined for various values of the non-Newtonian power-law index “” which is equal to: 0.9, 1, and 1.1. Obtained numerical results show that for the dilatant fluids (), the load ...

A Fatigue Model for Spur Gear Contacts Operating Under .

A Fatigue Model for Spur Gear Contacts Operating Under Mixed Elastohydrodynamic Lubrication Conditions. S. Li, A ... a mixed elastohydrodynamic lubrication model customized to handle transient contact conditions of gears, (iii) a stress formulation that assumes the plane strain condition to compute the transient elastic stress fields on and ...

A mathematical model of the hydro-support: An elasto .

Request PDF on ResearchGate | A mathematical model of the hydro-support: An elasto-hydrostatic thrust bearing with mixed lubrication | A mathematical model for a new type of navigation lock-gate ...

A Numerical Analysis for Piston Skirts in Mixed Lubrication .

60208 This paper presents a mathematical model for piston skirts in mixed lubrication. It Takayuki Arai takes into account the ... piston is often working in the and ...

A Mathematical Model for the Mixed Lubrication of Non-Conformable Contacts With Asperity Friction, Plastic Deformation, Flash Temperature, and Tribo-Chemist

A mathematical model is presented in this paper for rolling-sliding contacts operating in a mixed regime of elastohydrodynamic lubrication and boundary lubrication. The model is based on the framework of Johnson et al. (1972, “A Simple Theory of Asperity Contacts in Elastohydrodynamic Lubrication,” Wear, 19 , pp. 91–108).

A computer model of mixed lubrication in point contacts .

A numerical model of mixed lubrication is presented in this paper. The idea introduced here is that asperity contact may be viewed as a result of a continuous decrease in film thickness, so that the transition between contact and non-contact is continuous and the same mathematical model should work for both regions.

A mathematical model for rolling/sliding line contacts in .

This paper presents a mathematical model for rolling/sliding line contacts operating in boundary and near boundary lubrication. The model is developed with first-principle formulations and incorporates key mechanical, thermal and tribo-chemical aspects of the problem including mode of deformation of the contact, friction, flash temperature, boundary film characterization and fluid–solid load ...

Penn State Engineering: ME Directo

Liming Chang and Y. R. Jeng, 2014, "A mathematical model for the mixed lubrication of non-conformable contacts with asperity friction, plastic deformation, flash temperature and tribo-chemistry", ASME Journal of Tribology, 136, pp. 022301

On a mathematical model of journal bearing lubrication .

A mathematical model has been employed to determine the characteristics of Boussinesq round buoyant jets which are injected horizontally or at an angle to horizontal, into a homogeneous, calm ambient.

Proc IMechE Part J: Effect of surface spacing parameters .

cially Pc, on average lubrication film thickness, ratio of contact area, ratio of contact load and non-dimen-sional maximum pressure are researched with the semi-system approach. Mathematical model According to the studies of Zhu and Hu,8 Wang et al.,9 and Hu and Zhu,10 a mathematical model is built for the mixed lubrication in point contacts. In

On a Model for the Prediction of the ... - SpringerLi

A model based on coupled contact approach was used by Bobach et al. to calculate friction in mixed lubrication. The half-space theory was employed to pre-calculate the dry mean contact pressure as a function of deformed gap height by assuming nominally flat surfaces in contact.

On a Model for the Prediction of the Friction Coefficient .

A new model was developed for the simulation of the friction coefficient in lubricated sliding line contacts. A half-space-based contact algorithm was linked with a numerical elasto-hydrodynamic lubrication solver using the load-sharing concept. The model was compared with an existing asperity-based ...