Deformations and decrease of load-carrying capacity of welded structures due to residual welding stresses

• Autorzy: Farkas J. , Jarmai K.
• Języki publikacji: EN

Abstrakty

EN

Residual deflection due to restrained shrinkage of longitudinal welds is calculated in the case of an asymmetric I-section crane runway girder. The residual welding compression stresses decrease the load-carrying capacity of a welded I-section compression strut in a significant measure. The effective width of a welded stiffened plate should be calculated considering residual welding stresses. The fatigue strength of welded joints is influenced by residual welding stresses significantly. These effects are illustrated by numerical examples.

Słowa kluczowe

EN

welded structure; residual welding stresses; distortions; stability; fatigue

PL

struktura spawana; naprężenia spawalnicze szczątkowe; zniekształcenie; stabilność; zmęczenie

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Foundations of Civil and Environmental Engineering
• Rocznik: 2006
• Tom: No. 7
• Strony: 117--126
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Farkas J.

autor

Jarmai K.

• University of Miskolc, Hungary Tel.:[phone]; fax: [phone],

Bibliografia

• 1. Bradfield,C.D. Tests on single plates under in-plane compression with controlled residual stresses and initial out-of-flatness. Technical report No. CUED-D-Struct-TR.78. University of Cambridge, Dept of Engineering, 1979.
• 2. Eurocode 3. 2002.(a) Design of steel structures. Part 1.1. General rules and rules for buildings.
• 3. Eurocode 3. 2002.(b) Part 1.9. Fatigue strength of steel structures.
• 4. Farkas,J., Jarmai,K. Analysis and optimum design of metal structures. Rotterdam, Balkema, 1997.
• 5. Farkas,J., Jarmai,K. Analysis of some methods for reducing residual beam curvatures due to weld shrinkage. Welding in the World 41, (1998) 385-398.
• 6. Farkas,J., Jarmai,K. Economic design of metal structures. Rotterdam, Millpress2003.
• 7. Farkas,J. Structural optimization as a harrnony of design, fabrication and economy. Struct. Multidisc. Optim. 30, l (2005) 66-75.
• 8. Lequien,Ph. 1998. Exemple de calcul d'une poutre de roulement de pont roulant. Construction Metalliąue 35, l (1998)22-47.
• 9. Neumann,A. Schweisstcchnisches Handbuch fur Konstruktcure. Teil III. Braunschweig, Yieweg & Sohn, Berlin, VEB Yerlag Technik, 1963.
• 10. Okerblom, N.O., Demyantsevich,V.P., Baikova,LP. Design of fabrication technology of welded structures (in Russian). Leningrad, Sudpromgiz, 1963.
• 11. Winter,G. Strength of thin steel compression flanges. Trans. Am. Soc. Civ. Engrs 112, (1947) 527-554.