Research and application of load spectrum technology of reliability running test method for vehicle

In order to maximize the use of load spectrum data in vehicle reliability driving test, as much as possible to solve practical problems, this paper preprocesses, edits, and compiles the original data obtained based on the multi-channel data acquisition system firstly. Then the effective and simplified application data of load spectrum of vehicle reliability driving test are obtained. Secondly, based on the measured load spectrum, the test and use equivalent relationship and acceleration coefficient of different components are calculated. The road simulation bench research is carried out to verify the reliability of the bench test and provide the basis for the indoor simulation reliability test. The reliability driving specification is studied, and the test speed of each road is determined. Meanwhile, the stress amplitude analysis method is used to analyze the fault, study the fault mechanism and improve it through optimization design. Finally, the influence mechanism of road surface on vehicle is studied by spectrum and amplitude analysis. This study which is based on solving practical problems expands the application field and direction of the measured test load spectrum from the test practice, and provides ideas and feasible methods for the application of reliable driving load spectrum.