Comparison of the dynamic riveting process of a rivet with and without a compensator

• Autorzy: Szymczyk E. , Slawinski G. , Jachimowicz J. , Derewonko A.
• Języki publikacji: EN

Abstrakty

EN

The paper deals with the analysis of deformation of a rivet hole in a riveted joint after the manual dynamic riveting process. For many years, riveting remains a traditional and the most popular method ofjoining in aircraft structures. The residual stress and strain state appear at the rivet hole after the riveting process, which improves the joint's fatigue behaviour. The local finite element models are made with Patran. The rivet and sheets are described using eight-noded, three-dimensional brick elements. The riveting tools consist of four-noded, two-dimensional shell elements. Numerical FE simulations of the upsetting process are carried out using the Ls-Dyna code. The contact with friction is defined between the collaborating parts of the specimen. The results of simulations of the dynamic riveting process of a mushroom rivet with and without a compensator are compared in this paper. Hole deformation of the upper and lower sheet, squeezing force, as well as deformations of the rivet head are analysed. The influence of the compensator on strain and displacement states is studied. Simulation shows that some technological factors may have positive influence on the residual stress fields. Using the rivet with a compensator results in a better rivet hole filling capability. The rivet hole displacement in upper and lower sheets are at the same level. Paper also present manual dynamic riveting process of reverse and standard riveting procedure and model of riveted specimen.

Słowa kluczowe

EN

riveted joint; mushroom rivet; FEM local model; deformation fields

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2009
• Tom: Vol. 16, No. 4
• Strony: 455--462
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Szymczyk E.

autor

Slawinski G.

autor

Jachimowicz J.

autor

Derewonko A.

• Military University of Technology Faculty of Mechanical Engineering Department of Mechanics and Applied Computer Science Kaliskiego 2, 00-908 Warsaw, Poland tel: [phone], fax: [phone],

Bibliografia

• [1]  Muller, R., An experimental and numerical investigation on the fatigue behaviour of fuselage rireted lap joints. Doctoral Dissertation, Delft University of Technology, Delft 1995.
• [2]  De Rijck, J., Stress Analysis of Fatigue Cracks in Mechanically Fastened Joints, Doctoral Dissertation, Delft University of Technology, Delft 2005.
• [3]  Szymczyk, E., Jachimowicz, J., Sławiński, G., Derewonko, A., Numerical modelling and analysis of riveting process in aircrafi structure,  (in  polish),  IX Międzynarodowa Konferencja Naukowa COMPUTER A1DED ENGINEERING, Szklarska Poręba 2008.
• [4]  Derewonko, A., Sławiński, G., Szymczyk E., Jachimowicz, J., Modelowanie wybranych zagadnień dynamicznych, IX Międzynarodowa Konferencja Naukowa COMPUTER AIDED ENGINEERING, Szklarska Poręba 2008.
• [5] Ls-Dyna Keyword User's Manual,   Version  971.  Livermore  Software Technology Corporation, May 2007.
• [6] De Rijck,I loman, J. J., Schijve, J., Benedictus, R., The driven rivet head dimensions as an indication of the fatigue performance of aircrafi lap joints, International Journal of Fatigue. 29, pp. 2208-2218, 2007.