A Load Spectrum Analysis Method Integrating Simulation and Test Loads

Abstract

The invention discloses a load spectrum analysis method combining simulation and test loads, comprising: S1, obtaining test loads and simulation loads of parts to be tested; S2, performing data preprocessing on test loads and simulation loads; S3, based on the preprocessing For the final test load and simulation load, the rainflow matrix is ​​obtained by the rainflow counting method, and the rainflow matrix is ​​represented by a three-dimensional histogram; S4. Based on the rainflow matrix, the preprocessed test load and simulation load are reprogrammed, Obtain the test load spectrum and the simulated load spectrum; S5, perform time-domain fusion on the test load spectrum and the simulated load spectrum according to the proportion of road conditions, and obtain the fusion load spectrum; S6, obtain the fusion stress spectrum of the tooth surface contact stress based on the fusion load spectrum; S7 , Based on the S-N curve of the material of the component to be tested and the fusion stress spectrum, the fatigue life of the component to be tested is obtained. The invention can effectively improve the accuracy of load spectrum analysis of auto parts.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering machinery, in particular to a load spectrum analysis method combining simulation and test loads. Background technique [0002] The automobile is composed of many parts, which are subject to real-time changing dynamic loads during the working process. In order to study the life of automobile parts, load analysis is required. At present, there are mainly two methods for the analysis of vehicle loading: test analysis and simulation analysis, but generally the two methods are used separately. For example, the simulation load spectrum analysis or the test load spectrum analysis is performed separately. Methods of analysis in conjunction with test loads. As for the test load, because it is a real vehicle test load or a processed real vehicle test load, it has certain non-repeatability, such as due to driver factors and regional limitations; while the simulation load has repeatability, which...

AI Technical Summary

Problems solved by technology

At present, there are mainly two methods for the analysis of vehicle loading: test analysis and simulation analysis, but generally the two methods are used separately. Methods of analysis combined with test loads

For the test load, because it is a real vehicle test load or a processed real vehicle test load, it has certain non-repeatability, such as due to driver factors and regional limitations; while the simulation load has repeatability, which is comparable to the test load. is more stable than

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