Probabilistic-based fatigue reliability assessment of carbon steel coil spring from random strain loading excitation

2021 ◽  
Author(s):  
C. H. Chin ◽  
S. Abdullah ◽  
S. S. K. Singh ◽  
A. K. Ariffin ◽  
D. Schramm
Keyword(s):  
Carbon Steel ◽  
Reliability Assessment ◽  
Coil Spring ◽  
Fatigue Reliability ◽  
Steel Coil

Reliability-based fatigue life of vehicle spring under random loading

2019 ◽  
Vol 10 (5) ◽  
pp. 737-748 ◽  
Author(s):  
Reza Manouchehry Nya ◽  
Shahrum Abdullah ◽  
Salvinder Singh Karam Singh
Keyword(s):  
Fatigue Life ◽  
Life Prediction ◽  
Reliability Assessment ◽  
Fatigue Life Prediction ◽  
Coil Spring ◽  
Fatigue Reliability ◽  
Random Loading ◽  
Content Type ◽  
Road Surfaces ◽  
Road Data

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.

Prediction of the Fatigue Life of the SAE 5160 Carbon Steel Coil Spring Based on Strain-Life Approach

2020 ◽  
Vol 841 ◽  
pp. 381-386
Author(s):  
Teuku Edisah Putra ◽  
Husaini ◽  
Hary Prakasa
Keyword(s):  
Fatigue Life ◽  
Carbon Steel ◽  
Critical Point ◽  
Strain Gauge ◽  
Road Surface ◽  
Coil Spring ◽  
Steel Coil ◽  
Cycles To Failure

This study aims to identify the effect of road surface to coil spring fatigue life using the strain-life approach. Strain signals were measured by attaching a strain gauge at the critical point of the component. The car was driven on a flat road, as well as uphill, and downhill paths. The results show that the downhill road provided the lowest fatigue life, of 1.5E+4 cycles to failure, which was 53 % lower than that of the uphill and 2,233 % lower than the flat road owing to the braking factor which resulted in a higher stress to the coil spring.

FATIGUE RELIABILITY ASSESSMENT OF WELDED JOINTS OF VERY FAST FERRY ACCOUNTING FOR VEHICLE LOADS

2021 ◽  
Vol 153 (A4) ◽  
Author(s):  
Y Garbatov ◽  
C Guedes Soares
Keyword(s):  
Hot Spots ◽  
Reliability Assessment ◽  
Stress Distributions ◽  
Structural System ◽  
Fatigue Reliability ◽  
Welded Steel ◽  
Longitudinal Stiffener ◽  
Hull Structure ◽  
Vehicle Loads ◽  
Wave Induced

This work deals with the fatigue reliability assessment of a welded joint in a longitudinal stiffener of trapezoidal shape in a very fast ferry. Based on the analysis of wave and cargo induced loads the ship hull structure is evaluated. The local structure is represented by a longitudinal stiffener with a trapezoidal transverse section. The critical hot-spots and the stress distributions are defined by FEM. The fatigue damage assessment of considered hot spots is analysed accounting for the combination of wave induced and car-breaking transient loadings. The formulation for the assessment of the welded steel joint is based on the S-N approach and FORM/SORM techniques are applied to evaluate the reliability against fatigue failure accounting for corrosion deterioration. The structural system composed by several hot spots is evaluated as a series system based on second order reliability bounds.

Fatigue reliability assessment of an existing steel railroad bridge

2001 ◽  
Vol 23 (10) ◽  
pp. 1203-1211 ◽  
Author(s):  
Sang-Hyo Kim ◽  
Sang-Woo Lee ◽  
Ho-Seong Mha
Keyword(s):  
Reliability Assessment ◽  
Fatigue Reliability ◽  
Railroad Bridge

scholarly journals Experimental and Numerical Investigation of SUP12 Steel Coil Spring

2013 ◽  
Vol 68 ◽  
pp. 251-257 ◽  
Author(s):  
Mohd Izaham Zainal Abidin ◽  
Jamaluddin Mahmud ◽  
Mohd Juzaila Abd Latif ◽  
Aidah Jumahat
Keyword(s):  
Numerical Investigation ◽  
Coil Spring ◽  
Steel Coil
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