Numerical load tooth surface contact analysis method based on hyperboloid shell element model
A technology of contact analysis and hyperboloid, which is applied in the field of spiral bevel gear processing, can solve the problems of large amount of calculation, time-consuming and complicated method in the solution process
Active Publication Date: 2022-03-18
CENT SOUTH UNIV
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[0002] Loaded tooth surface contact analysis (LTCA) is a major design method of tooth surface transmission performance in the field of spiral bevel gear manufacturing. At present, the main method is to rely on the finite element simulation software platform to solve the problem. The simulation load tooth surface contact analysis method is complicated. , the precision of the gear finite element element model is high, the entire solution process is computationally intensive and time-consuming, and once the calculation results are wrong, the modifiability is poor, and the flexibility and practicability of the design are greatly reduced
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[0134] The above technical solution will be described in detail below with reference to the accompanying drawings and examples.
[0135] About i) Analysis of the bending characteristics of the tooth surface, the specific:
[0136] The tooth shape of the spiral cone gear is very complicated and has its own tooth surface bending behavior. In order to establish an accurate finite element model, it is first necessary to analyze the basic structural characteristics from the geometry level. figure 1 The basic schematic of the shape of the spiral cone gear tooth surface is given, respectively from the height H. G , Tooth thick T G And tooth wide direction W G Three dimensional size definitions are performed on the tooth surface. Especially for the contraction teeth of the end-milling, the teeth are gradually increased from the small end to the large end, and the thickness of the root will gradually increase from the small end to the large end, and the tooth thickness is gradually decreas...
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The invention discloses a numerical load tooth surface contact analysis (NLTCA) method based on a hyperboloid shell element model, which analyzes the basic structural characteristics of the tooth surface of a spiral bevel gear from a geometric level, and analyzes the bending behavior of the tooth surface; combined with the previous gear finite element method The basic theory and method of modeling, the modeling method of the hyperboloid shell element of the spiral bevel gear is proposed, which considers both the meshing stiffness of the gear and the contact flexibility of the gear, so as to ensure that the numerical results of NLTCA are more realistic and effective; use the Rayleigh-Ritz method to determine The meshing stiffness and contact flexibility of spiral bevel gears provide the basis for the subsequent solution of NLTCA numerical results and the analysis of related tooth surface contact mechanical properties; the objective function of NLTCA is solved by combining the finite element method and linear programming method, and the processing parameters and The direct correlation rule of the tooth surface physical performance evaluation item provides a direct parameter-driven relationship between the actual processing parameters and the tooth surface contact performance evaluation. The amount of calculation in the solution process is reduced and the flexibility and practicability of the design can be guaranteed.
Description
Technical field [0001] The present invention belongs to the field of spiral cone gear processing, and is specifically a method of contact analysis method based on the numerical load clamping surface of the double curved casing unit. Background technique [0002] Toad contact analysis (LTCA) as a main tooth surface drive performance design method as a spiral cone gear manufacturing, currently the main means or to solve the finite element simulation software platform, the simulation load tooth surface contact analysis method complex , The accuracy of the gear finite element model is high, the entire solution process is large, the time is long, and once the result is wrong, the flexibility and practicality of the design are greatly reduced. Inventive content [0003] It is an object of the present invention to provide a direct functional relationship of processing parameters and physical properties in the fabricity synergistic manufacturing, and explore the relationship between the...
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IPC IPC(8): G06F30/23G06F30/17G06F111/04G06F111/06G06F119/14
CPCG06F2111/10G06F30/23
Inventor 唐进元丁撼
Owner CENT SOUTH UNIV