Abstract
In shipbuilding, steel sandwich plates are applied in several areas. Particularly the connections between the sandwich plates may be prone to fatigue in the case of cyclic loads. Therefore, the fatigue strength of a fillet-welded connection of a steel sandwich plate under in-plane loading has been investigated experimentally and numerically. Numerical calculations are performed using the crack propagation and the effective notch stress approach. In the notch stress approach, the modelling of the weld root may create problems as the relatively thin face plates are affected by the notch rounding of 1 mm. Two different shapes are considered. Furthermore, the small size notch approach with a reference radius of 0.05 mm is applied. From the comparison of the results with the fatigue strength found in the tests, conclusions are drawn for appropriate modelling.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Lloyd’s Register, Provisional rules for the application of sandwich panel construction to ship structure, Lloyd’s Register of Shipping, London, 2006.
Haibach E.: Betriebsfestigkeit — Verfahren und Daten zur Bauteilberechnung (Fatigue strength — Procedures and data for the assessment of components), Springer-Verlag, Berlin Heidelberg, 2002, (in German).
Hobbacher A.: Recommendations for fatigue design of welded joints and components, Final Draft IIW Doc. XIII-2151r3-07/XV-1254r3–07, International Institute of Welding, 2007.
Oltmann K.: Vergleich von Kerbspannungskonzept und linearer Bruchmechanik am Beispiel eines Verbindungselementes für Sandwichplatten (Comparison between the notch stress and crack propagation approach by the example of a connection of sandwich plates), Unpublished Study Work, Institute for Ship Structural Design and Analysis, Hamburg University of Technology (TUHH), Hamburg, 2007 (in German).
Franc2D/L, http://www.cfg.cornell.edu/software/franc2d_casca.htm.
James M.: A plane stress finite element model for elastic-plastic mode I/II crack growth, Dissertation, Kansas State University, Manhattan, Kansas, 1998.
Radaj D., Sonsino C.M., Fricke W.: Fatigue assessment of welded joints by local approaches, 2nd edition, 2006, Woodhead Publishing Limited, Cambridge.
Berger C., Blauel J.G., Hodulak L., Varfolomeyev I.: Bruchmechanischer Festigkeitsnachweis für Maschinenbauteile (Fracture mechanics proof of strength for engineering components), 3rd Ed., 2006, VDMA Verlag, Frankfurt a. M. (in German).
Fricke, W.: Guideline for the fatigue assessment by notch stress analysis for welded structures, IIW Doc. XIII-2240-08/XV-1289–08, 2008.
Radaj D., Sonsino C.M., Fricke W.: Recent developments in local concepts of fatigue assessment of welded joints, International Journal of Fatigue, 2009, vol. 31, no. 1, pp. 2–11.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Fricke, W., Paetzold, H. & Zipfel, B. Fatigue Tests and Numerical Analyses of a Connection of Steel Sandwich Plates. Weld World 53, R151–R157 (2009). https://doi.org/10.1007/BF03266726
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03266726