An Analytical Shear Strength Model for Load-Carrying Fillet-Welded Connections Incorporating Nonlinear Effects
Publication: Journal of Structural Engineering
Volume 146, Issue 3
Abstract
In this study, an analytical formulation of a weld throat stress model is presented for defining limit state condition of fillet-welded connections incorporating plate-to-plate contact conditions. The validity of the resulting analytical solution is verified by finite-element computation incorporating nonlinear material and nonlinear geometry effects. In addition, its effectiveness in correlating shear strengths obtained from transverse and longitudinal shear specimens has been demonstrated through the reanalysis of over 100 shear tests performed by the same authors as an early part of the same study. As a result, a unified fillet weld shear strength can be demonstrated regardless of test specimen configurations and shear loading conditions, whereas conventional shear strength equations are incapable of reconciling the differences in shear strengths between those obtained from transverse and longitudinal shear specimens. Furthermore, the present developments provide a basis for achieving a quantitative fillet weld sizing criterion for the design and construction of fillet-welded structures under complex loading conditions, for which a unified shear strength and robust weld throat stress calculation procedure are prerequisites.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The authors acknowledges the support of this work through a grant from CRRC Qiqihar Rolling Stock Co., Ltd.
References
AISC. 2010. Specification for structural steel buildings. Chicago: AISC.
AWS (American Welding Society). 2007. Standard methods for mechanical testing of welds. AWS B4.0. Miami: AWS.
AWS (American Welding Society). 2015. Structural welding code–Steel. AWS D1.1. Miami: AWS.
Butler, L. J., and G. L. Kulak. 1971. “Strength of fillet welds as a function of direction of load.” Weld. J. 50 (5): 231–234.
CEN (European Committee for Standardization). 2005. Eurocode 3: Design of steel structures: Part 1-8 Design of joints. CEN 1993-1-8. Brussels, Belgium: CEN.
CSA (Canadian Standards Association). 2014. Design of steel structures. Etobicoke, ON, Canada: CSA.
Department of Defense. 1974. Fillet weld size, strength and efficiency determination. MIL-STD-1628. Arlington, VA: Department of Defense.
Department of Defense. 1990. Fabrication, welding, and inspection of ships structure. MIL-STD-1689A. Arlington, VA: Department of Defense.
DNV-RP-C203. 2012. Fatigue design of offshore steel structures. DNV-RP-C203. Oslo, Norway: Det Norske Veritas Germanischer Lloyd.
Dong, P., and J. K. Hong. 2004. “The master SN curve approach to fatigue evaluation of offshore and marine structures.” In ASME 2004 23rd Int. Conf. on Offshore Mechanics and Arctic Engineering, 847–855. New York: American Society of Mechanical Engineers Digital Collection.
Dong, P., and J. K. Hong. 2007. “A robust structural stress parameter for evaluation of multiaxial fatigue of weldments.” Fatig. Fract. Mech. 35: 206–222. https://doi.org/10.1520/STP45516S.
Dong, P., J. K. Hong, D. A. Osage, D. J. Dewees, and M. Prager. 2010a. The master S–N curve method: An implementation for fatigue evaluation of welded components in the 2007 ASME B&PV code, section VIII, division 2 and API 579-1/ASME FFS-1. New York: Welding Research Council.
Dong, P., Z. Wei, and J. K. Hong. 2010b. “A path-dependent cycle counting method for variable-amplitude multi-axial loading.” Int. J. Fatig. 32 (4): 720–734. https://doi.org/10.1016/j.ijfatigue.2009.10.010.
Huang, T. D., et al. 2014. “Reduction of overwelding and distortion for naval surface combatants, Part 1: Optimized weld sizing for lightweight ship structures.” J. Ship Prod. Des. 30 (4): 184–193. https://doi.org/10.5957/JSPD.30.4.130028.
Huang, T. D., et al. 2016. “Reduction of overwelding and distortion for naval surface combatants, Part 2: Weld sizing effects on shear and fatigue performance.” J. Ship Prod. Des. 32 (1): 21–36. https://doi.org/10.5957/JSPD.32.1.140024.
Huang, T. D., C. Conrardy, P. Dong, P. Keene, L. Kvidahl, and L. C. DeCan. 2007. “Engineering and production technology for lightweight ship structures, Part 2: Distortion mitigation technique and implementation.” J. Ship Prod. 23 (2): 82–93.
Huang, T. D., P. Dong, L. Deccan, D. Harwig, and R. Kumar. 2004. “Fabrication and engineering technology for lightweight ship structures, Part 1: Distortions and residual stresses in panel fabrication.” J. Ship Prod. 20 (1): 43–59.
IIW. 1980. Deformation curves of fillet welds. Commission XV. Paris: International Institute of Welding.
Kamtekar, A. G. 1982. “A new analysis of the strength of some simple fillet welded connections” J. Constr. Steel Res. 2 (2): 33–45. https://doi.org/10.1016/0143-974X(82)90024-4.
Kato, B., and K. Morita. 1974. “Strength of transverse fillet welded joints.” Weld. J. 53 (2): 59–64.
Kennedy, D. L., and G. J. Kriviak. 1985. “The strength of fillet welds under longitudinal and transverse shear: A paradox.” Can. J. Civ. Eng. 12 (1): 226–231. https://doi.org/10.1139/l85-021.
Lu, H., P. Dong, and S. Boppudi. 2015. “Strength analysis of fillet welds under longitudinal and transverse shear conditions.” Mar. struct. 43 (Oct): 87–106. https://doi.org/10.1016/j.marstruc.2015.06.003.
Mei, J., and P. Dong. 2017a. “An equivalent stress parameter for multi-axial fatigue evaluation of welded components including non-proportional loading effects.” Int. J. Fatig. 101 (Aug): 297–311. https://doi.org/10.1016/j.ijfatigue.2017.01.006.
Mei, J., and P. Dong. 2017b. “A new path-dependent fatigue damage model for non-proportional multi-axial loading.” Int. J. Fatig. 95 (Sep): 252–263. https://doi.org/10.1016/j.ijfatigue.2016.10.031.
Miazga, G. S., and D. L. Kennedy. 1989. “Behaviour of fillet welds as a function of the angle of loading.” Can. J. Civ. Eng. 16 (4): 583–599. https://doi.org/10.1139/l89-089.
Nie, C., and P. Dong. 2012. “A traction stress based shear strength definition for fillet welds.” J. Strain Anal. Eng. Des. 47 (8): 562–575. https://doi.org/10.1177/0309324712456646.
Picon, R., and J. Canas. 2009. “On strength criteria of fillet welds.” Int. J. Mech. Sci. 51 (8): 609–618. https://doi.org/10.1016/j.ijmecsci.2009.06.003.
Xing, S., P. Dong, and A. Threstha. 2016. “Analysis of fatigue failure mode transition in load-carrying fillet-welded connections.” Mar. Struct. 46 (Mar): 102–126. https://doi.org/10.1016/j.marstruc.2016.01.001.
Yang, L., Y. Cui, X. Wei, M. Li, and Y. Zhang. 2019. “Strength of duplex stainless steel fillet welded connections.” J. Constr. Steel Res. 152 (Jan): 246–260. https://doi.org/10.1016/j.jcsr.2018.08.031.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 146 • Issue 3 • March 2020
Copyright
©2019 American Society of Civil Engineers.
History
Received: Mar 11, 2018
Accepted: Jul 18, 2019
Published online: Dec 26, 2019
Published in print: Mar 1, 2020
Discussion open until: May 26, 2020
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.