C.D. Rans, R.C. Alderliesten, P.V. Straznicky

The residual stress field induced around a rivet hole during the riveting process has been shown to improve the fatigue life of riveted structures. The rivet installation force or squeeze force has been identified as critical variable in determining this effect and has been the focus of several finite element studies. These studies, however, have been limited in scope to single rivet-sheet combinations. In order to further understand the influence of rivet type and sheet material on the formation of residual stresses during riveting, a 3-dimensional finite element model of a force-controlled riveting process has been developed. The formation of residual stresses in monolithic 2024-T3 and GLARE sheets with universal and countersunk rivets has been studied. Contrary to expectations, countersunk rivets were found to provide similar or greater expansion levels in the outer (or countersunk) sheet compared to universal rivets, depending on the rivet squeeze force and flushness of the countersunk rivet. Riveting was also found to produce larger and more compressive regions of residual compressive tangential stress in GLARE compared to 2024-T3 due to the apparent strain hardening behaviour of the fibre layer.

23rd ICAF Symposium of the international Committee on Aeronautical Fatique, 2005, Hamburg

Conference Poster

englisch

A5, 15 Seiten

DGLR-Bericht, 2005, 2005-03, 23rd ICAF Symposium of the international Committee on Aeronautical Fatique - Proceedings; S.457-471; 2005; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

finite elements analysis, residual stress

Bestellbar

2005