Contemporary concepts of fatigue assessment of welded joints

• Autorzy: Navrat T. , Vlk M. , Vosynek P. , Petruska J.

Warianty tytułu

CS

Soudobe koncepce unavoveho posuzovani svarovych spoju

• Konferencja: International Seminar of Applied Mechanics (15 ; 17-19.06.2011 ; Wisła, Poland)
• Języki publikacji: EN

Abstrakty

EN

Traditionally, welded joints of structures were assessed using the concept of nominal stresses and the detail categories. The disadvantage of this concept is that it does not allow for structural details and, what is more, the welded structure is often extremely indented, which makes establishing particular nominal stresses very difficult or even impossible. In such cases, it is necessary to use finite element method to assess stress state of welded joints. This article attempts to summarize the concepts being used today.

CS

Tradicní zpúsob hodnocení svarovych spojü konstrukci je założeń na pouzití koncepce nominálních napétí a katalogu klasifíkace detailü. Nevyhodou tohoto zpúsobu je, że nezohledñuje konstrukcní detaily a navíc je svafená konstrukce mnohdy tak clenitá, że urcení nominálních napétí je slozité nebo zcela nemożnć. V téchto pfípadech je vyuzití metody konećnych prvkü pro posouzení namáhání svarovych spojü nezbytné. Shrnutí pouzívanych koncepcí je pfedmétem tohoto pfíspévku.

Słowa kluczowe

EN

welding; welded construction; stress

PL

spawanie; konstrukcja spawania; naprężenia

• Wydawca: Wydawnictwo Katedry Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Modelling and Optimization of Physical Systems
• Rocznik: 2011
• Tom: z. 10
• Strony: 59--64
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Navrat T.

• Institute of Solid Mechanics, Mcchatronics and Biomechanics, Faculty of Mechanical Engineering. Brno University of Technology

autor

Vlk M.

• Institute of Solid Mechanics, Mcchatronics and Biomechanics, Faculty of Mechanical Engineering. Brno University of Technology

autor

Vosynek P.

• Institute of Solid Mechanics, Mcchatronics and Biomechanics, Faculty of Mechanical Engineering. Brno University of Technology

autor

Petruska J.

• Institute of Solid Mechanics, Mcchatronics and Biomechanics, Faculty of Mechanical Engineering. Brno University of Technology

Bibliografia

• 1. RADAJ, D. - SONSINO, CM. - FRICKE, W. Fatigue assessment of welded joints by local approaches. Second edition, CRC Press, 2006.
• 2. RADAJ D. - SONSINO C M . - FRICKE W. Recent developments in local concepts of fatigue assessment of welded joints. International Journal of Fatigue, vol. 31, 2009, pp. 2 - 1 1.
• 3. HOBBACHER, A. et al. Recommendations for fatigue design of welded joints and components. I1W Doc. XIII-1251-07 / XV-1254-07, revision 2007.
• 4. HOBBACHER, A.F. The new IIW recommendations for fatigue assessment of welded joints and components- A comprehensive code recently updated. International Journal of Fatigue, vol. 31, 2009, s. 50-58.
• 5. MORGENSTERN, C. et al. Fatigue design of aluminium welded joints by the local stress concept with the ftctious notch radius of rf = 1 mm. international Journal of Fatigue, vol. 28, 2006, p. 881-890.
• 6. ATZORI, B. - LAZZARIN, P. - MENEGHETTI, G. Fatigue Strength of Welded Joints Based on Local, Semi-local and Nominal Approaches. Theoretical and Applied Fracture Mechanics, vol. 52, 2009, pp. 55-61.
• 7. FKM-Guideline, Analytical strength assessment of components in mechanical engineering. 5-th edition. Forschungskuratorium Maschinenbau, Frankfurt/M., VDMA, 2003.
• 8. CSN EN 1993-1-9 (73 1401). Euroköd3: Navrhovdni ocelovych konstrukci - Cast 1-9: Ünava. 2006.
• 9. SONSINO, CM. Principles of Local Stress Concepts for the Assessment of Welded Joints. ESIS, Newsletter 45, 2009
• 10. NEUBER, H. Über die Berücksichtigung der Spannungskonzentration bei Festigkeitsberechnung Konstruktion, 20, 1968, e. 7, s. 245-251.
• 11.PEDERSEN, M.M. et al. Experience with the Notch Stress Approach for Fatigue Assessment of Welded Joints. Proceedings of the Swedish Conf. on Light Weight Optimized Welded Structures, Borlänge, 2010.
• 12. HAIBACH E. Modifizierte Schadensakkumulations-Hypothese zur Berücksichtigung des Dauerfestigkeitsabfalls mit fortschreitender Schädigung. Laboratorium für Betriebsfestigkeit, Darmstadt, Tech. Mitteilungen Nr. 50/70, Darmstadt 1 9 7 0 .
• 13. VLK, M. Dynamickä pevnost a zivotnost. Skriptum VUT-FS, 2. vydäni, Brno 1992.
• 14. MORROW, J.D. Cyclic Plastic Strain Energy and Fatigue of Metals. ASTM STP 378, 1965, pp. 45-84.
• 15. LANDGRAF, R.W. The Resistance of Metals to Cyclic Deformation. ASTM STP 467, 1970, pp. 3-36.
• 16. SMITH, K.N. - WATSON, P. - TOPPER, T.H. A Stress-Strain Function for the Fatigue of Metals. Journal of Materials, 5, 1970, No. 4, pp. 767-778.