Investigations on the fretting fatigue failure mechanism of bolted joints in high strength steel subjected to different levels of pre-tension

Bolted connections are widely used as an effective joining method with higher fatigue strength than equivalent welded and riveted joints. The fretting fatigue problem caused by components in contact subjected simultaneously to fluctuating loads and relative small movements is of special importance i...

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Bibliographic Details
Published in:Tribology international 2017-04, Vol.108, p.128-140
Main Authors: Jiménez-Peña, Carlos, H. Talemi, Reza, Rossi, Barbara, Debruyne, Dimitri
Format: Article
Language:English
Subjects:
Bolted joint
Bolted joints
Clamping force
Crack propagation
Failure mechanisms
Fatigue failure
Fatigue strength
Fatigue tests
Finite element method
Fretting
Fretting fatigue
High strength steel
High strength steels
HSS
Load fluctuation
Materials fatigue
Mathematical models
Pre-tension
Riveted joints
Thick plates
Three dimensional models
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Summary:Bolted connections are widely used as an effective joining method with higher fatigue strength than equivalent welded and riveted joints. The fretting fatigue problem caused by components in contact subjected simultaneously to fluctuating loads and relative small movements is of special importance in the vicinity of bolted joints. In the present paper, a series of fatigue tests on bolted connections using moderately thick plates made of high strength steel S500MC carried out using different pre-tension levels is described. It was shown that fretting fatigue decreased when a higher pre-tension force is used. In addition, a 3D finite element model was built to assess the stress gradient in the connection and several multiaxial criteria were used to determine the location of the initial crack. These numerical results were correlated to the experimental results and showed acceptable predictions. •Effect of pre-tensioning in single lap bolted joints in high strength steel was studied.•An increase of fretting fatigue life with higher pre-tensioning levels was reported.•Multiaxial criteria were employed in FE analysis to predict the initial crack location.•Numerical results correspond well with the experimental results.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2016.11.014