Analysis of residual stress fields in the riveted joint

• Autorzy: Szymczyk E. , Jachimowicz J. , Derewońko A.
• Języki publikacji: EN

Abstrakty

EN

The riveted joints are critical areas of the aircraft structure. The residual stress and strain state appears at the rivet hole after the riveting process and improves fatigue behaviour of the joint. Numerical FE simulations of the upsetting process are carried out using the MARC code. Three-dimensional numerical models are used to determine the resulting stress and strain fields at the countersunk rivet and around the hole. The contact with friction is defined between the mating parts of the joint. Calculations are carried out in an elastic-plastic range. The influence of the rivet geometry, rivet stiffness and the sheet material model on strain and stress states is studied. Non-destructive testing methods like X-ray diffraction, liquid penetrant inspection and visual detection analysis with a UV lamp are used for validation of numerical results. Comparison between numerical and experimental results gives a satisfactory agreement. Numerical simulations allow investigating the influence of imperfections on the strength of the joint.

Słowa kluczowe

EN

riveted joint; FEM local model; non-destructive testing methods

• 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: 2007
• Tom: Vol. 14, No. 2
• Strony: 465--473
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Szymczyk E.

autor

Jachimowicz J.

autor

Derewońko A.

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

Bibliografia

• [1] Rijck, J., Stress Analysis of Fatigue Cracks in Mechanically Fastened Joints, Doctoral Dissertation, Delft University of Technology, 2005.
• [2] Szymczyk, E., Jachimowicz, J., Derewońko, A., Analysis of displacement and stress distributions in riveted joints, III European Conference on Computational Mechanics Solids, Structures and Coupled Problems in Engineering, Lisbon, Portugal, 5–8 June 2006.
• [3] Derewońko, A., Szymczyk, E., Jachimowicz, J., Numerical simulation of riveting process, 6th European Solid Mechanics Conference ESMC, Budapest, Hungary, 28 August – 1September, 2006.
• [4] Jachimowicz, J., Kajka, R., Szachnowski, W., Szymczyk, E., The exploitation of multi riveted joints in the aircraft structure – analytical and experimental estimation of stress state (in polish), Polanica 21-24.06 2006.
• [5] Kubiak, T., Młodkowski, A., Niezgodziński, T., FEM in analysis of the riveting process (in polish), Analizy numeryczne wybranych zagadnień mechaniki, 23, 445-457, Warszawa 2007.
• [6] Derewońko, A., Szymczyk, E., Jachimowicz, J., Numerical estimation of the residual stress level in the riveted joint (in polish), Analizy numeryczne wybranych zagadnień mechaniki, 17, 329-350, Warszawa 2007.
• [7] Jachimowicz, J., Kajka, R., Szachnowski, W., Szymczyk, E., FEM and experimental analysis of strain and stress states around the rivet hole in the thin walled aircraft structure (in polish), Analizy numeryczne wybranych zagadnień mechaniki, 21, 399-424, Warszawa 2007.
• [8] MSC Marc Theoretical Manual, MSC Corp. 2004.
• [9] Rigaku Corp., X – ray Stress Measurement Method, Application Report Nr.12, Rigaku X-ray div., Tokyo, Japan 2003.
• [10] Dyląg, Z., Jakubowicz, A., Orłoś, Z., Strength of Materials (in polish), WNT, Warszawa 1996.