Abstract
A new calculation approach of tooth surface friction characteristic parameters is raised in this paper, the caclulation approach is based on gear drive test experience and finite element multi field coupling analysis method and technology.In the process of solution, friction characteristic concept of engineering oriented complex gear drive is raised, “experiment-calculation composite model” is built, tooth surface friction characteristic parameters(friction coefficients) are inversely analyzed by the composite model under different lubrication conditions. The problem of complicated tooth friction coefficients is solved. The calculation method is a new idea on solving friction characteristic parameters under complex lubrication conditions, it unites theoretical research, system modeling, numerical simulation and experimental test, so its solution is more reasonable. Exactly research friction coefficients can help to search gear friction principle and to upgrade the level of decrease noise and vibration of gear.
Highlights
The research of the tooth surface friction to reduce friction, increase the load capacity of gear tooth, and improve the system transmission performance has very important significance
The tooth surface friction affects the dynamic characteristics of gear transmission system, it is an important origin of vibration and noise excitation [614].The tooth surfaces friction coefficients are exact solution has positive significance on gear fatigue strength design, failure mechanism analysis, and damping and noise-reducing. on account of the gear drive characteristics of dynamic, randomness and chaos under the complex lubrication conditions, Based on the gear drive dynamic measurement experiment, finite element method(FEM) multi-field coupled analysis and inverse computation technology are used, the complex gear drive " polymorphous friction " concept was put forward
The theory research, system modeling, numerical simulation and experimental test are applied to the composite model, the tooth face friction coefficients are quantified calculation
Summary
The research of the tooth surface friction to reduce friction, increase the load capacity of gear tooth, and improve the system transmission performance has very important significance. On account of the gear drive characteristics of dynamic, randomness and chaos under the complex lubrication conditions, Based on the gear drive dynamic measurement experiment, finite element method(FEM) multi-field coupled analysis and inverse computation technology are used , the complex gear drive " polymorphous friction " concept was put forward. The main purpose of this study is to find out the actual meshing tooth surface complex frictional conditions and its change rules, provide key technical support for the gear drive tribology precise design. The complex gear drive “polymorphous friction” concept, is refers to the two tooth meshing contact surfaces or friction medium (such as lubricating oil slick) explicit characteristics and status in the process of the relative movement. The experiment-simulation composite model of complex gear drive polymorphous friction process analysis and quantitative research is built. The model will be used to systematically research the friction distribution characteristics and its change rules under different lubrication conditions
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