용접연결부의 실제 비드형상을 고려한 노치피로해석법
Notch Fatigue Analysis Based on the Actual Bead Shape of Welded Joint
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초록
This paper is concerned with the fatigue behaviour of welded joints by the notch stress approach. The actual welded shape is complex and 3-dimensional that may influence greatly the fatigue strength. The purpose of the paper is to present a way of modelling the actual weld bead shape by using a 3-D Laser scanner for experimental models of steel plates with longitudinal fillet welds, and applying its results to a proper notch stress method for the fatigue strength. The present approach to assess the fatigue strength is quite promising with application to a variety of welded joints and effects of weld profiling to fatigue strength.
Abstract
This paper is concerned with the fatigue behaviour of welded joints by the notch stress approach. The actual welded shape is complex and 3-dimensional that may influence greatly the fatigue strength. The purpose of the paper is to present a way of modelling the actual weld bead shape by using a 3-D Laser scanner for experimental models of steel plates with longitudinal fillet welds, and applying its results to a proper notch stress method for the fatigue strength. The present approach to assess the fatigue strength is quite promising with application to a variety of welded joints and effects of weld profiling to fatigue strength.
참고문헌 (8)
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- Fricke W., "Local Stress Analysis of Welded Ship Structural Details under Consideration of the Real Weld Profile", 10th International Symposium on Practical Design of Ships and Other Floating Structures, Houston, Texas. (2007)
- Niemi E., "Fatigue Analysis of Welded Components" (2006), IIW-1430-00 Woodhead Publ.. International Institute of Welding.
- Radaj D., "Fatigue Assessment of Welded Joints by Local Approaches" (2006), Second Edition, Woodhead Publ.
- Smith R.A., "Predic of Fatigue Regimes in Notched Components", International Journal of Mechanical Science, 20, pp.201~206 (1978)
- Taylor D., "Some New Methods for Predicting Fatigue in Welded Joints", International Journal of Fatigue, 24, pp.509~518 (2002)
- Zhu X.K., "Three-dimensional Stress and Displacement Fields near an Elliptical Crack Front", International Journal of Fracture, 109, pp.383~401 (2001)