Mesh characteristic analysis method of spalled helical gear pair considering matrix stiffness correction

A helical gear pair and characteristic analysis technology, applied in special data processing applications, geometric CAD, design optimization/simulation, etc., can solve problems such as low calculation efficiency, inability to accurately consider the elastic deformation of gear teeth, and inability to truly reflect the gear meshing process, etc.
CN107436982BActive Publication Date: 2020-04-14NORTHEASTERN UNIV LIAONING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHEASTERN UNIV LIAONING
Publication Date
2020-04-14

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Abstract

The invention belongs to the technical field of mechanical dynamics, and in particular relates to a method for analyzing the meshing characteristics of a peeled helical gear pair taking into account matrix stiffness correction. The method first decomposes the helical gear pair teeth into N independent and uniform ones along the tooth width direction. For thin-sheet spur gears, based on the known spall size and position parameters, determine the spalling situation on each spur gear; use the potential energy method and introduce the finite element matrix stiffness correction coefficient to calculate the time-varying meshing stiffness of the single-chip spalled spur gear; based on ANSYS The software uses parametric programming to establish a three-dimensional finite element peeling helical gear contact model and solve it to obtain the time-varying meshing stiffness, which facilitates analysis and comparison with analytical method results. Based on analytical and finite element solution methods, the spalling width w was analyzed. s , peeling length α s , the influence of the axial position of spalling and the tooth-direction position of spalling on the time-varying meshing stiffness of the helical gear, while considering the influence of multiple axial spalling and multi-tooth spalling on the meshing stiffness of the helical gear.
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Description

technical field

[0001] The invention belongs to the technical field of mechanical dynamics, and in particular relates to a method for analyzing the meshing characteristics of a spalled helical gear pair in consideration of matrix rigidity correction. Background technique

[0002] At present, the existing methods for analyzing the meshing characteristics of helical gear pairs considering spalling mainly include the following methods:

[0003] 1. Based on finite element analysis software

[0004] Through parametric programming, the 3D model of the helical gear with spalling is established in the finite element software ANSYS. In the software, the appropriate unit and material parameters are selected to mesh the 3D model, and the finite element contact model of the meshing helical gear pair is established. Set appropriate constraints and choose an appropriate solution method to calculate the meshing characteristics of helical gear pairs with spalling. However, when using the ...

Claims

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