Multi-dimensional Load Signals Acceleration Method for Special Vehicles and Its Application in Vibration Environment Simulation Test

HAN Qing; FANG Qiang; FAN Weiguang; WANG Shuai

doi:10.7643/ issn.1672-9242.2024.06.007

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Equipment Environmental Engineering ›› 2024, Vol. 21 ›› Issue (6) : 45-52. DOI: 10.7643/ issn.1672-9242.2024.06.007

Special Topic—Environmental Worthiness Design and Testing Technology for Special Vehicles

Multi-dimensional Load Signals Acceleration Method for Special Vehicles and Its Application in Vibration Environment Simulation Test

HAN Qing, FANG Qiang, FAN Weiguang, WANG Shuai

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Abstract

The work aims to solve the problems of long time, high cost, and simulation accuracy of vibration environment in multi-axle coupling bench test of vehicles. The RP method was applied to the multi-dimensional load signals acceleration processing. The rain-flow filter method and the RP filter method were used to accelerate the multi-dimensional load signals applied to special vehicles and then the vibration environment simulation test was carried out for the accelerated multi-dimensional load signals based on the time wave reconstruction theory, so as to carry out accelerated fatigue test more effectively by the multi-axle coupling test bench of wheeled vehicles. Compared with the original multi-dimensional load signals, under the same time domain, frequency, and damage domain, the signals filtered by RP filter were compressed by 50% and the simulation accuracy of vibration environment in multi-axle coupling test was greater than 80%. The wheel acceleration fatigue test is carried out by the proposed, which can accurately reproduce the vibration environment. The time and forms of failure can be reproduced effectively through the verification by test, which are consistent with the vehicle field test results.

Key words

acceleration fatigue test / multi-dimensional load signals processing / rain-flow filter / RP filter / time wave reconstruction / equivalent mileage

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HAN Qing, FANG Qiang, FAN Weiguang, WANG Shuai. Multi-dimensional Load Signals Acceleration Method for Special Vehicles and Its Application in Vibration Environment Simulation Test[J]. Equipment Environmental Engineering. 2024, 21(6): 45-52 https://doi.org/10.7643/ issn.1672-9242.2024.06.007

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