Evaluation of fillet weld properties and fatigue behaviour in dependence of welding parameters

• Autorzy: Leitner M. , Foosl T. , Stoschka M. , Eichlseder W.

Warianty tytułu

PL

Ocena właściwości oraz zachowania zmęczeniowego spoiny pachwinowej w zależności od parametrów spawania

• Języki publikacji: EN

Abstrakty

EN

Numerous different design codes can be used to describe the durability of welded structures. One wide spread approach is the local notch stress approach, which calculates the fatigue lifetime in dependency of the notch stress factor using different effective radii. To calculate the fatigue behaviour by using the local notch stress approach, the R1MS-concept is commonly used [1]. The evaluation of the influence due to the welding process parameters, especially for high-strength steels, the effect of both the geometrical and metallurgical notch is studied in a parametric way for selected weld joints. Experimental fatigue tests have been performed to investigate the link between fatigue life and manufacturing process dependent weld toe notch design. To be able to capture the influence of welding parameters, as energy input per unit length, welding velocity, angle of blowpipe, size and shape of the heat input zone in a numerical way, a local coupled thermo-mechanical simulation is build-up. The complexity of this modelling increases very strong by the temperature dependency of the multitudinous phase material properties. The material and manufacturing properties were adjusted by comparison of the temperature profiles. This experimental based procedure defines the simulation base for more complex welding seams.

PL

Obecnie stosowane są liczne metody do określenia trwałości struktur spawanych. Jedną z nich jest metoda naprężeń karbu, która pozwala obliczyć trwałość zmęczeniową spoin. W pracy zostały przedstawione eksperymenty zmęczeniowe, na podstawie których określono zależności pomiędzy trwałością spoiny a parametrami procesu jej wytwarzania.

Słowa kluczowe

EN

welding; fatigue; fillet weld properties; welding simulation; welding parameters

PL

spawanie; zmęczenie; właściwości spawalnicze; symulacja spawania; parametry spawania

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2011
• Tom: Vol. 11, no 3
• Strony: 651--660
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Leitner M.

autor

Foosl T.

autor

Stoschka M.

autor

Eichlseder W.

• Montanuniversität Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria

Bibliografia

• [1] Radaj D. and Sonsino C.M.: Fatigue assessment of welded joints by local approaches, 2nd edition Cambridge, Woodhead Publishing Ltd., 2006.
• [2] Hobbacher A.: Recommendations for fatigue design of welded joints and components, IIW-Document XIII-1823-07, International Institute of Welding, updated December 2008.
• [3] Grong O.: Metallurgical modelling of welding, Norwegian University of Science and Technology, Department of Metallurgy, Second Edition, 1997, pp. 24-44.
• [4] Goldak J., Chakravarti A.: A new finite element model for welding heat sources, Metallurgical Transactions B., Vol. 15B, June, 1984, pp. 299-305.
• [5] Davids R.J., Mills M.K., Lampman R.S.: Properties and selection: irons, steels and high-performance alloys, ASM Handbook, Vol. 1, 1993.
• [6] Rahman M., Enzinger N.: Parameter optimization and FE - Simulation of multi-layer welding considering welding residual stresses and post weld treatment, Graz University of Technology, 2008, pp. 125-127.
• [7] Loose T., Sakkiettibutra J., Leistungsmerkmale der Schweißstruktursimulation, Schweißen und Schneiden, Vol. 60, No. 9, 2008, pp. 487-491.
• [8] Cerjak H., Bhadeshia H.K.D.H., Kozeschnik E.: Mathematical modelling of weld phenomena 7, Graz University of Technology, First publisher, 2005, pp. 39-62.