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Finite element grid automatic generation method of profiling cylindrical gear

A cylindrical gear, automatic generation technology, applied in image data processing, special data processing applications, instruments, etc.

Inactive Publication Date: 2015-03-11
BEIHANG UNIV
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  • Claims
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the three-dimensional finite element mesh model of the gear can be automatically generated by giving the basic parameters of the gear, the modification parameters, and the grid division parameters, eliminating the need for building a three-dimensional model in the three-dimensional modeling software. The complex operation process of modeling and meshing in finite element software greatly improves the efficiency of pre-processing for simulation analysis

Method used

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  • Finite element grid automatic generation method of profiling cylindrical gear
  • Finite element grid automatic generation method of profiling cylindrical gear
  • Finite element grid automatic generation method of profiling cylindrical gear

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Embodiment Construction

[0053] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0054] The present invention is a rapid modeling method designed for finite element modeling of cylindrical gears. Taking a gear with a modulus of 5 as an example, the modeling flow chart is shown in the figure. This implementation example takes the small wheel in the table parameters as the object, and the implementation steps of the modeling are as follows:

[0055] Step (1): given the basic parameters

[0056]

[0057] Step (2): Calculate the pitch circle, addendum circle, and dedendum radius of the gear according to the basic parameters and installation parameters, combined with the tooth height coefficient and head clearance coefficient.

[0058] h a * = 1

[0059] c * =0.25

[0060] r p = m t · ...

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Abstract

The invention relates to a finite element grid automatic generation method for profiling a cylindrical gear, which is used for solving the problem in cylindrical gear profiling simulated analysis that the operation for establishing a finite element grid model is complicated. According to the method, a grid node coordinate of a gear finite element model is formed based on a basic principle of gear profiling machining through calculating gear outline curve points and inner part points of the profiling gear, so that a finite element grid model of the gear is established. The method for automatically generating a gear profiling finite element grid is established, and complicated work for three-dimensional modeling and grid division can be avoided; the gear finite element model can be established in very short time, so that the efficiency and the precision of the gear finite element calculation analysis are greatly improved.

Description

technical field [0001] The invention relates to the technical field of gear simulation, in particular to a method for automatically generating finite element grids of modified cylindrical gears, which is suitable for automatic generation of finite element grids in gear simulation analysis. Background technique [0002] At present, for the pre-processing of gear finite element simulation analysis at home and abroad, the three-dimensional geometric model of the gear is generally established by three-dimensional modeling software, and then the gear model is imported into the finite element analysis software for mesh division, and finally defined according to the simulation conditions. loads and boundary conditions. In order to ensure the calculation accuracy of the finite element simulation analysis and take into account the calculation efficiency, it is necessary to establish a gear mesh model with a reasonable mesh distribution. It is time-consuming and laborious to divide th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06T17/30
Inventor 王延忠唐文刘鹏
Owner BEIHANG UNIV
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