Numerical evaluation of residual stresses in dissimilar welds between carbon and stainless steels

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초록

The presence of residual stresses in and around the welds can be detrimental to the performance of the welded part. Therefore, a good estimation of residual stresses in welds is then needed. Simulation tools based on finite element (FE) method are very useful to predict welding residual stresses. However, the numerical simulation of residual stresses in dissimilar steel welds is generally more challenging than that of similar steel welds because of difference in the thermo physical and mechanical properties of the base metals to be joined. This paper presents the characteristics of residual stresses, especially the longitudinal residual stresses which are most harmful to the integrity of the structure among the residual stress components, in dissimilar welds between carbon and stainless steels by carrying out threedimensional thermal elastic-plastic finite element analysis. Moreover, residual stresses in similar steel weds are examined for the comparison. © 2007 Civil-Comp Press.

키워드

Carbon and stainless steels; Finite element analysis; Residual stresses; Similar and dissimilar steel welds; Thermo physical and mechanical properties; Base metals; Dissimilar steel; Dissimilar weld; Elastic-plastic finite element analysis; Longitudinal residual stress; Numerical evaluations; Physical and mechanical properties; Simulation tool; Steel welds; Stress component; Welding residual stress; Computer aided engineering; Computer simulation; Corrosion resistant alloys; Dissimilar metals; Environmental engineering; Finite element method; Mechanical properties; Welding; Welds; Residual stresses
제목
Numerical evaluation of residual stresses in dissimilar welds between carbon and stainless steels
저자
Lee, C.H.; Chang, K.H.; Jang, G.C.; Park, H.C.
발행일
2007-09
유형
Conference Paper
저널명
Proceedings of the 11th International Conference on Civil, Structural and Environmental Engineering Computing, Civil-Comp 2007