To read this content please select one of the options below:

Reliability-based fatigue life of vehicle spring under random loading

Reza Manouchehry Nya (Centre for Integrated Design for Advanced Mechanical System (PRISMA), Universiti Kebangsaan Malaysia, Bangi, Malaysia)
Shahrum Abdullah (Centre for Integrated Design for Advanced Mechanical System (PRISMA), Universiti Kebangsaan Malaysia, Bangi, Malaysia)
Salvinder Singh Karam Singh (Centre for Integrated Design for Advanced Mechanical System (PRISMA), Universiti Kebangsaan Malaysia, Bangi, Malaysia)

International Journal of Structural Integrity

ISSN: 1757-9864

Article publication date: 2 September 2019

Issue publication date: 23 September 2019

258

Abstract

Purpose

The purpose of this paper is to analyse fatigue-life prediction based on a reliability assessment for coil springs of vehicle suspension systems using different road excitations under random loading.

Design/methodology/approach

In this study, a reliability assessment was conducted to predict the fatigue life of an automobile coil spring during different road data surfaces. Campus, urban and highway road surfaces were considered to capture fatigue load strain histories using a data acquisition system. Random loadings are applied on top of a coil spring where coil is fixed from down. Fatigue reliability was established as a system of correlated events during the service life to predict the probability of fatigue life using Coffin–Manson, Morrow and Smith–Watson–Topper (SWT) models.

Findings

Fatigue-life prediction based on a reliability assessment revealed that the Morrow model can predict a safe region of a life data point for the three road surfaces. Highway road data indicated the highest rate of reliability at 0.8 for approximately 1.69 × 105 cycles for the SWT model.

Originality/value

Reliability assessment of the fatigue life of vehicle coil springs is vital for safe operation. The reliability analysis of a coil spring under random loading excitations can be used for fatigue-life prediction.

Keywords

Citation

Manouchehry Nya, R., Abdullah, S. and Singh Karam Singh, S. (2019), "Reliability-based fatigue life of vehicle spring under random loading", International Journal of Structural Integrity, Vol. 10 No. 5, pp. 737-748. https://doi.org/10.1108/IJSI-03-2019-0025

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

Related articles