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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.

Active Publication Date: 2020-04-14
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the existing technical problems, the present invention provides a method for analyzing the meshing characteristics of the spalled helical gear pair considering the correction of the matrix stiffness, which solves the complex and heavy finite element modeling process, low calculation efficiency, and analytical calculation procedures in the prior art. However, it is impossible to accurately consider the elastic deformation of the gear teeth, the specific distribution of the tooth base stiffness and spalling, and it cannot truly reflect the gear meshing process and other issues.

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

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Embodiment 1

[0083] Such as figure 1 Shown: This embodiment discloses a method for analyzing the meshing characteristics of a spalled helical gear pair considering the correction of substrate stiffness, including the following steps:

[0084] Step 1: Obtain the basic parameters, peeling position and peeling size parameters of the helical gear pair;

[0085] In this embodiment, the basic parameters of the helical gear pair are obtained as shown in Table 1 (see the description in the text for details on the peeling position and size):

[0086] Table 1 Helical gear pinion parameters

[0087]

[0088] Step 2: Calculate the time-varying meshing stiffness of the helical gear according to the energy method, and establish a calculation model that considers nonlinear contact, finite element correction of the matrix stiffness, and the meshing stiffness of the spalled helical gear pair;

[0089] Step 2.1: Decompose the helical gear pair into N independent and uniform small spur gears along the t...

Embodiment 2

[0122] Such as figure 2 Shown: This embodiment discloses a method for analyzing the meshing characteristics of a spalled helical gear pair considering the correction of the substrate stiffness, including the following steps:

[0123] Step 1: Obtain the basic parameters, peeling position and peeling size parameters of the helical gear pair;

[0124] Step 2: Calculate the time-varying meshing stiffness of the helical gear according to the energy method, and establish a calculation model that considers nonlinear contact, finite element correction of the matrix stiffness, and the meshing stiffness of the spalled helical gear pair;

[0125] Step 2.1: Decompose the helical gear pair into N independent and uniform small spur gears along the tooth width direction, and calculate the parameters of each small spur gear;

[0126] In detail, the teeth of the helical gear pair are decomposed into N independent and uniform thin plate gears along the tooth width direction, L represents the ...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/17
CPCG06F30/17G06F30/23
Inventor 马辉陈康康李占伟闻邦椿张学良
Owner NORTHEASTERN UNIV LIAONING
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