Analyzing the Fretting Fatigue of Bolt Joints by Experiments and Finite Element Analysis

The appearance of fretting fatigue cracks in bolted sheets limits their lifetime. Furthermore, repairing these failures requires much effort due to needing to replace the components instead of replacing just the bolt. To prevent such failures, the purpose of this study is to understand the failure m...

Full description

Saved in:
Bibliographic Details
Published in:Lubricants 2023-08, Vol.11 (8), p.348
Main Authors: Szlosarek, Robert, Holzmüller, Paul, Kröger, Matthias
Format: Article
Language:English
Subjects:
Aluminum
Analysis
bolt joint
Bolted joints
Coefficient of friction
Crack initiation
Crack propagation
experimental testing
Failure
Failure mechanisms
Failure modes
Fatigue
Fatigue cracks
Fatigue failure
Fatigue testing machines
Finite element analysis
Finite element method
fretting fatigue
Investigations
Lubricants
Lubricants & lubrication
Materials
Mechanical properties
Metal fatigue
Numerical analysis
Parameter identification
preload
Sheet material
Strain gauges
Stress state
Tribology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The appearance of fretting fatigue cracks in bolted sheets limits their lifetime. Furthermore, repairing these failures requires much effort due to needing to replace the components instead of replacing just the bolt. To prevent such failures, the purpose of this study is to understand the failure mechanism and to identify the major influencing parameters. Therefore, a representative joint of a bolt of size M22 and sheet material were investigated by experiments and a finite element analysis. The experiments were conducted over a wide range of preloads from zero to maximum preload. It turned out that the failure mode changes at 50 kN. For this preload, the influence of the surface and the use of a lubricant was observed. A grinded surface as well as the use of lubricant showed a change in the failure mode. The accompanying simulation showed that an analysis of the stresses delivers no proper explanation for the observed effects in the experiment. Therefore, the contact status was analyzed for various preloads and friction coefficients. The results correlate with the change in the failure mode. The conclusion is that both the stress state and the tribological behavior influence the failure mode and have to be considered in a numerical analysis.
ISSN:2075-4442
2075-4442
DOI:10.3390/lubricants11080348