Jiaxing Pei

Hebei University of Engineering · School of Equipment and Manufacturing

A numerical method is proposed to evaluate the effect of non-Gaussian rough- ness on point contact elastohydrodynamic lubrication (EHL). A mixed EHL model of point contact, considering non-Gaussian roughness, is developed. The oil film pressure in the model was controlled by the Reynolds equation of average flow, and the contact pressure of asperit...

This paper introduces the grease average flow model considering non-Newtonian characteristics into the grease-mixed elastohydrodynamic lubrication (EHL) numerical analysis. On this basis, a method of grease EHL analysis is established with the roughness coupled indirectly. The effect of the rheological parameter on the variety law of the lubricatio...

In this paper, the application scope of the average flow model is extended to grease lubrication considering the non-Newtonian characteristics. First, flow factor expressions applicable to both Newtonian fluids and non-Newtonian fluids are derived. Then, a model problem is established by coupling the Reynolds governing equation, film thickness func...

Wear is one of the most common failure forms of gear transmission system. In this paper, a dynamic wear reliability evaluation method for gear system, which subjects to stochastic external load, is proposed on the basis of the Markov diffusive process. The stochastic load is considered as the combination of constant load and random noise. The failu...

An approach for lubrication reliability analysis of spur gear systems considering the randomness of external load and surface roughness is presented. The instantaneous failure probability of gear lubrication is captured by a gear stochastic dynamics model and a reliability model of elastohydrodynamic lubrication (EHL). The stochastic dynamics model...

In gear transmission systems, the reliability of lubrication is essential to its life. An approach to predict the reliability of gear elastohydrodynamic lubrication (EHL) under a random input torque is proposed in this paper. Firstly, a single-freedom nonlinear stochastic dynamic model that considers backlash, a time-varying mesh stiffness, and ran...

An approach for mixed elastohydrodynamic lubrication (EHL) analysis of line contact with non-Gaussian rough surface is proposed, and a minimum film thickness formula is derived based on the simultaneous solutions. The Patir and Cheng's average flow model and Kogut and Etsion's rough surface contact model is used to obtain hydrodynamic pressure and...

Purpose The purpose of this paper is to propose an simple and efficient stiffness model for line contact under elastohydrodynamic lubrication (EHL) and to investigate the gear meshing stiffness by the proposed model. Design/methodology/approach The method combines the surface contact stiffness and film stiffness as EHL contact stiffness. The EHL c...