Multi-axis load equivalent processing method and device, computer equipment and medium

Abstract

The invention discloses a multi-axis load equivalent processing method and device, computer equipment and a medium, and aims to improve the equivalence and accuracy of equivalent loads loaded by a test bed. The method comprises the following steps: projecting a multi-axis load into a load space to obtain decomposed loads in a plurality of directions; performing pseudo damage calculation on the decomposition loads in the multiple directions to obtain pseudo damage of the decomposition loads; determining the total pseudo damage of the decomposition load according to the pseudo damage of the decomposition load and the cycle index of the multi-axis load; initializing equivalent load cycle index, and constructing an equivalent load formula in a preset signal form corresponding to decompositionloads in a plurality of directions; determining a total pseudo damage formula corresponding to the equivalent load according to the equivalent load cycle index and the equivalent load formula; makingthe total pseudo damage of the decomposition loads in the multiple directions to be equal to the total pseudo damage formula corresponding to the equivalent loads, so that a load equivalent relation formula is obtained, and iterative solution is conducted to obtain parameters of the equivalent load formula; and obtaining an equivalent load corresponding to the equivalent load formula according tothe parameters.

Description

technical field [0001] The invention relates to the technical field of automobile durability tests, in particular to a multi-axis load equivalent processing method, device, computer equipment and media. Background technique [0002] The development of durability performance of chassis and other parts is generally obtained based on the durability test of the proving ground, and the load spectrum of the parts is random, in order to speed up the part design verification test. It is necessary to convert the random load spectrum into a block spectrum composed of several equal-amplitude sine wave load spectra for loading, because the block spectrum has the characteristics of simple loading and short test time. This process of transforming the random spectrum into a block spectrum by a certain method is called load equivalence. It is worth noting that the equivalence of load equivalence is mainly reflected in two points, one is that the fatigue life of components under random load...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a multi-axis load equivalent processing method, device, computer equipment and media to solve the problem in the prior art that will affect the equivalence of the equivalent load loaded on the test bench

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