십자형 용접부 피로강도 산정을 위한 국부응력법의 비교연구
A Comparative Study of the Fatigue Strength on Cruciform Joints by Local Stress Methods
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초록
The notch effects on the fatigue strength of welded joints are both stress concentration and fatigue strength reduction. In the notch stress approach, the notch effects are usually approximated by introducing weld-bead parameters for the local detailed weld joints. In this paper, well-known notch stress approaches - critical distance method, area method and fictitious rounding method are presented for the fatigue strength of cruciform joints. The estimated results of the present methods are applied to the experiments performed in this study and reported in the references. The results of the application show that the fatigue-life scatterness of the experimental data expressed in the nominal stress is significantly reduced by introducing the effective fatigue stress of the present study.
Abstract
The notch effects on the fatigue strength of welded joints are both stress concentration and fatigue strength reduction. In the notch stress approach, the notch effects are usually approximated by introducing weld-bead parameters for the local detailed weld joints. In this paper, well-known notch stress approaches - critical distance method, area method and fictitious rounding method are presented for the fatigue strength of cruciform joints. The estimated results of the present methods are applied to the experiments performed in this study and reported in the references. The results of the application show that the fatigue-life scatterness of the experimental data expressed in the nominal stress is significantly reduced by introducing the effective fatigue stress of the present study.
참고문헌 (10)
- Bellet, D, "The Fatigue Behaviour of Three-dimensional Stress Concentrations", International Journal of Fatigue, 27, pp.207~221 (2005)
- Gurney T.R, "The Fatigue Strength of Transverse Fillet Welded Joints" (1991), Abbington Publishing
- Fatigue Design of Welded Joints and Components, "Hobbacher A", IIW, ~, pp.Doc. XIII- 1539-97 (1996), XV-845-96
- 강성원, "Longi-web 연결부의 피로강도 평가에 관한 실험적 연구", 대한조선학회 논문집, 45(1), pp.87~92 (2008), 대한조선학회
- 김명현, "선체 Longi-web 연결부의 피로강도 평가를 위한 구조응력 기법의 적용", 대한조선학회 논문집, 45(1), pp.81~86 (2008), 대한조선학회
- Lazzarin, P, "A Notch Intensity Factor Approach to the Stress Analysis of Welds", Fatigue and Fracture of Engineering Materials and Structures, 21, pp.1089~1103 (1998)
- Maddox S.J, "The Effect of Plate Thickness on the Fatigue Strength of Fillet Welded Joints" (1987), Abbington Publishing
- Radaj D, "Fatigue Assessment of Welded Joints by Local Approaches" (2006), Woodhead Publ.
- Taylor, D, "Some New Methods for Predicting Fatigue in Welded Joints", International Journal of Fatigue, 24, pp.509~518 (2002)
- 양박달치, "용접연결부의 실제 비드형상을 고려한 노치피로해석법", 대한조선학회 논문집, 46(4), pp.417~423 (2009), 대한조선학회