Influence of Interference and Clamping on Fretting Fatigue in Single Rivet-Row Lap Joints
Author:
Iyer K.1, Rubin C. A.2, Hahn G. T.2
Affiliation:
1. Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109 2. Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37203
Abstract
Primary fretting fatigue variables such as contact pressure, slip amplitude and bulk cyclic stresses, at and near the contact interface between the rivet shank and panel hole in a single rivet-row, 7075-T6 aluminum alloy lap joint are presented. Three-dimensional finite element analysis is applied to evaluate these and the effects of interference and clamping stresses on the values of the primary variables and other overall measures of fretting damage. Two rivet geometries, non-countersunk and countersunk, are considered. Comparison with previous evaluations of the fretting conditions in similar but two-dimensional connections indicates that out-of-plane movements and attending effects can have a significant impact on the fatigue life of riveted connections. Variations of the cyclic stress range and other proponents of crack initiation are found to peak at distinct locations along the hole-shank interface, making it possible to predict crack initiation locations and design for extended life.
Publisher
ASME International
Subject
Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials
Reference26 articles.
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