A Calculation Method of Load Distribution Between Teeth with Edge Contact

Abstract

The invention relates to a method for calculating the load distribution between teeth with edge contact. Firstly, through the tooth load contact analysis (LTCA) calculation without considering the edge contact, the tooth surface contact situation and the target surface of each instantaneous gear pair are obtained. The major and minor axes of the contact ellipse; then judge the tooth surface contact under the tooth deformation condition through tooth surface contact analysis (TCA), and at the same time can judge the edge contact situation on each tooth surface; by defining the real part of the contact area and the contact area The concept of the imaginary part, as well as the concept of defining the real load in the contact area and the virtual load in the contact area, can extend the effective calculated tooth width (or effective tooth height, or effective tooth width and effective tooth height) of the gear, so that the edge contact If the area is located on the extended virtual tooth surface, then the tooth load contact analysis calculation without considering the edge contact can be continued, and the inter-tooth load distribution result considering the edge contact can be obtained.

Description

technical field [0001] The invention belongs to the intersection field of gear geometry and mechanical analysis, and in particular relates to a method for calculating load distribution between teeth with edge contact, in particular to obtain the force situation of edge contact of gears under pseudo-real working conditions. Background technique [0002] In the quasi-static analysis of gear pairs, one of the key issues is how to solve the load distribution between the teeth in each transient state. When the teeth are in edge contact, the calculation of this solution will become very complicated and difficult to solve. [0003] At present, finite element software such as ANSYS is mainly used for the force calculation and analysis of gears. The finite element method can be used to calculate the contact situation of the tooth surface, the stress and strain of the gear, and the contact pressure of the tooth surface at any moment of contact. Good handling of gear pairs where edge c...

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Problems solved by technology

[0004] Scholar Fang Zongde proposed a gear tooth loading method based on the compliance coefficient method and deformation coordination conditions in the document "Model and method of gear tooth load-bearing contact analysis (LTCA), Mechanical Transmission, 1998, 22(2), p1-3". The contact analysis method (LTCA), although it has better certainty in calculation than the finite element method, and the calculation complexity is relatively small, but this method ignores the nonlinear influence of the contact compliance coefficient, and the contact area load The approximate treatment is the line contact load instead of the actual area load, and it does not explain how to deal with the edge contact, so this method is not perfect and accurate enough, and its solution results are not credible

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