A method to solve the simulation of gear contact analysis

Abstract

The invention relates to a method for solving the simulation of gear contact analysis. Firstly, multiple initial models are generated according to the initial control points, and then spliced ​​into a complete model; contact search is performed to find out that a point on the main contact surface corresponds to the slave contact surface. The method of the nearest projection point determines the specific contact position; the penalty function method is used to deal with the constraint conditions, and the contact nonlinear problem is transformed into a material nonlinear problem, and a penalty potential energy term is added to the potential energy functional; the contact part contact is deduced Stiffness matrix, according to the stiffness matrix and displacement, calculate the value of the required variables; the analysis results are displayed in the stress cloud diagram. The present invention realizes complex model construction through multi-piece splicing, and compares the actual model with the standard model to prove the accuracy of the model; obtains the equivalent stress and contact stress results through the deduced stiffness matrix and displacement, and proves that the method is effective Addresses the feasibility of gear contact analysis.

Description

technical field [0001] The invention relates to a CAE analysis technology, in particular to a CAE analysis method for gear contact problems. Background technique [0002] With the rapid development of computer technology in the past ten years, the development of CAE technology has once again brought innovation into the product process arrangement. The CAE technology with the finite element method as the core idea has been applied in many fields. Gears are widely used in mechanical transmission, and tooth surface damage is the main form of gear failure. Therefore, gear contact analysis is an important means of gear design. When the model of the contact part is complex, the traditional finite element method is used to greatly reduce the calculation accuracy. , the calculation results are poor, mainly because the mesh model used for analysis in the finite element method is to use the Lagrangian boundary to fit the original CAD model boundary, and the continuity of this boundary...

AI Technical Summary

Problems solved by technology

Gears are widely used in mechanical transmission, and tooth surface damage is the main form of gear failure. Therefore, gear contact analysis is an important means of gear design. When the model of the contact part is relatively complex, the calculation accuracy will be greatly reduced by using the traditional finite element method. , the calculation results are poor, mainly because the grid model used for analysis in the finite element method uses the Lagrangian boundary to fit the original CAD model boundary, and the continuity of the boundary is C 0 , so that the error between the fitted result and the original CAD model is very large when describing complex surfaces, especially when the surface curvature is large, resulting in inaccurate calculation results

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