Study on Compiling Method of Bench Fatigue Test Specification for Pickup Trucks Leaf-spring Bushing
Hui Huang
Jiangling Motors Corporation Limited Company
Wentao Ge
Jiangling Motors Corporation Limited Company
Zufeng Qiu
Jiangling Motors Corporation Limited Company
DOI: https://doi.org/10.59429/pest.v6i2.6632
Keywords: Leaf-spring bushing; Virtual iteration; Dynamic load spectrum; Multi-block fatigue load; Bench fatigue test
Abstract
In order to compile the bench fatigue test specification for pickup trucks leaf-spring bushing, the multibody dynamics body model of the pickup trucks was built, the hub acceleration and suspension displacement which has been acquired from proving ground are taken as target signal, by applying virtual iteration technique, the dynamic load spectrum of bushing has been extracted. In order to keep the connection between the bench test and the road of proving ground, according to equivalent damage theory, the bench fatigue test specification has been compiled by using multi-block fatigue load method, and the time consuming of bench test has been shortened, and acceleration factor of 5.03 was achieved by comparing the test time of bench test and proving ground, the bushing has ultimately passed the durability validation of bench test.
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