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http://dx.doi.org/10.5781/KWJS.2009.27.6.049

Numerical Analysis Model for Fatigue Life Prediction of Welded Structures  

Lee, Chi-Seung (Dept. of Naval Architecture and Ocean Engineering, Pusan National University)
Lee, Jae-Myung (Dept. of Naval Architecture and Ocean Engineering, Pusan National University)
Publication Information
Journal of Welding and Joining / v.27, no.6, 2009 , pp. 49-54 More about this Journal
Abstract
In this study, the numerical analysis model for fatigue life prediction of welded structures are presented. In order to evaluate the structural degradation of welded structures due to fatigue loading, continuum damage mechanics approach is applied. Damage evolution equation of welded structures under arbitrary fatigue loading is constructed as a unified plasticity-damage theory. Moreover, by integration of damage evolution equation regarding to stress amplitude and number of cycles, the simplified fatigue life prediction model is derived. The proposed model is compared with fatigue test results of T-joint welded structures to obtain its validation and usefulness. It is confirmed that the predicted fatigue life of T-joint welded structures are coincided well with the fatigue test results.
Keywords
Continuum damage mechanics; High cycle fatigue; Simplified fatigue life prediction model; Welded structures;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Yong Bok Lee and Chin Sung Chung : Residual Stress Redistribution and Fatigue Behavior in Weldment, Journal of KWJS, 15-3 (1997), 20-28 (in Korean)   과학기술학회마을   ScienceOn
2 Jong Sung Kim, June Soo Park and Tae Eun Jin : Review on the International Joint Researches for Evaluation of Welding Residual Stresses, Journal of KWJS, 23-6 (2005), 8-17 (in Korean)   과학기술학회마을   ScienceOn
3 Chi Seung Lee, Young Hwan Kim, Tae Woo Kim Byung Moon Yoo and Jae Myung Lee : Numerical Fatigue Test Method of Welded Structures Based on Continuum Damage Mechanics, Journal of KWJS, 26-3 (2008), 67-73 (in Korean)   과학기술학회마을   DOI   ScienceOn
4 J. Lemaitre : A Course on Damage Mechanics (2nd Edition), Springer, 1992, 1-228
5 Y. Ueda and M.G. Yuan : Prediction of Residual Stresses in Butt Welded Plates Using Inherent Strains, J. Engineering Materials and Technology, 115 (1993), 417-423   DOI   ScienceOn
6 Chi Seung Lee, Young Hwan Kim, Tae Woo Kim and Jae Myung Lee : Numerical Fatigue Test Method Based on Continuum Damage Mechanics, Journal of KWJS, 25-1 (2007), 63-69 (in Korean)   과학기술학회마을   DOI   ScienceOn
7 K. Thepvongsa, Y. Sonoda and H. Hikosaka : Fatigue Damage of Materials(1st Edition), WIT Press, 2003, 309-319
8 Myung Hyun Kim and Yoo Il Kim : A Review on the International Effects for the Fatigue Strength Assessment of Welded Structures, Journal of KWJS, 23-6 (2005), 39-36 (in Korean)
9 T.R. Gurney : Fatigue of Welded Structures(2nd Edition), Cambridge University Press, 1979, 1-456
10 Wha Soo kim : Residual Stress & Fatigue Strength in Welded Ship Structure, Journal of KWJS, 15-3 (1997), 12-19 (in Korean)
11 M.G. Yuan and Y. Ueda : Prediction of Residual Stresses in Welded T- and I-Joints Using Inherent Strains, J. Engineering Materials and Technology, 118 (1996), 417-423
12 Chang Sung Seok, Soo-Yong Kim and Ji Hong Park : Analysis of Residual Stress and Fatigue Crack Growth Behaviors of Weld Zone, Journal of KSME A, 23-9 (1999), 1516-1524 (in Korean)
13 Commission of Design, Analyses and Structural Strength of Welded Structures : General Guide for Hot Spot Stress Analysis, Journal of KWJS, 23-6 (2005), 18-28 (in Korean)   과학기술학회마을   ScienceOn
14 J. Lemaitre, J.P. Sermage and R. Desmorat : A two scale damage concept applied to fatigue, Int. J. Fracture, 97 (1999), 67-81   DOI   ScienceOn
15 Eung Joon Kim : Effect of Welding Residual Stress on Fatigue Crack Propagation Behavior, Journal of KWJS, 15-3 (1997), 1-11 (in Korean)   과학기술학회마을   ScienceOn