Tooth surface meshing point line load calculation method based on transient simulation analysis result

Abstract

The invention relates to a tooth surface meshing point line load calculation method based on a transient simulation analysis result, and belongs to the technical field of gear meshing simulation. The method comprises the following steps: extracting a time-varying curve of tooth surface unit pressure in a gear meshing transient simulation analysis result, and exporting a data file of the curve; the data of the curve of the tooth surface unit pressure changing along with the time is processed through MATLAB programming; obtaining a tooth surface meshing point line load based on gear meshing transient simulation analysis; and verifying the correctness of programming extraction and calculation of the tooth surface unit linear load through a typical unit tooth surface meshing point linear load calculation case. According to the invention, real and reliable load data are provided for meshing elastohydrodynamic lubrication simulation analysis, strength check and the like; the problem that the difference between the calculation result and the actual situation is large due to the fact that the difference of the tooth crest area, the pitch line area and the tooth root area cannot be distinguished, the meshing transient characteristic cannot be considered, and the influence of the gear shaft and the bearing on the gear meshing line load in a classic theoretical method is solved.

Description

technical field [0001] The invention relates to the technical field of gear meshing simulation, in particular to a method for calculating line loads at tooth surface meshing points based on transient simulation analysis results. Background technique [0002] The interaction mode between the gear pairs is line contact, and accurate gear meshing line load is required in the research of gear meshing elastohydrodynamic lubrication simulation analysis and Hertzian contact strength check. However, when the gear teeth mesh, the coincidence degree is always greater than 1. Classical theoretical calculations assume that the line load of the gear mesh is evenly distributed along the contact line, and cannot distinguish the difference in line loads such as the top of the tooth, the pitch line, and the tooth root area; it cannot be considered The transient characteristics of gear meshing, the influence of supporting structures such as gear shaft, bearing and box on the gear meshing line...

AI Technical Summary

Problems solved by technology

[0010] It can be known from formula (2) that the line load at the contact point is the average line load P on the length L of the contact line n , cannot reflect the change of gear meshing load along the contact line

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