Simulation of a multi-axial loading fatigue test of the rear drive axle of a minivan

doi:10.16511/j.cnki.qhdxxb.2018.26.004

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Abstract When a vehicle is running, its suspension is heavily loaded due to the motion. The durability is then one of the key problems in vehicle design. Multi-axial loading laboratory fatigue tests are widely used to shorten the development process, reduce costs and enhance market competitiveness. This paper presents a practical method for simulating multi-axial fatigue tests of a rear axle using a dynamic finite element model of the rear axle and data processing in MATLAB. The simulation of the laboratory fatigue tests includes system identification, calculation of the input dynamic loads for the finite-element model and calculation of the stress-strain response reproduced and compared with the measured stress-strain response. With the errors of less than 5% with the critical fatigue areas in the rear axle located where the section sizes change.

Keywords finite element multi-axial loading road simulation system identification stress-strain response critical fatigue areas

ZTFLH:

O242.21

Issue Date: 15 February 2018

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	DONG Zhichao
	WANG Xiaofeng
	LOU Weipeng
	HUANG Yuanyi
	ZHONG Ming

Cite this article:

DONG Zhichao,WANG Xiaofeng,LOU Weipeng, et al. Simulation of a multi-axial loading fatigue test of the rear drive axle of a minivan[J]. Journal of Tsinghua University(Science and Technology), 2018, 58(2): 212-216.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2018.26.004 OR http://jst.tsinghuajournals.com/EN/Y2018/V58/I2/212

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