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首页> 外文期刊>Journal of Materials Science >Prediction of residual stresses in welds of similar and dissimilar steel weldments
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Prediction of residual stresses in welds of similar and dissimilar steel weldments

机译：相似和不相似钢焊件的焊接残余应力预测

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摘要

The fabrication of structural member using dissimilar steels renders steel structures lighter and more economical. However, it always involves welding process and produces different residual stresses in welds as compared with welding of similar steels. This paper presents the characteristics of residual stresses in welds of similar and dissimilar steel weldments by carrying out three-dimensional (3-D) thermal elastic-plastic finite element (FE) analysis. The materials used in this investigation were SM400, SM490, SM520 and SM570, widely used structural steels in welded structure. Results show that the maximum longitudinal residual stresses in welds of the similar steel weldments increase with increasing yield stress of the steel welded (SM400 < SM490 < SM520 < SM570). In case of the dissimilar steel weldments, the difference between the longitudinal residual stresses in welds increases with increasing yield stress of the steel welded together with SM400 (SM490 < SM520 < SM570).
机译：使用异种钢制造结构构件可使钢结构更轻巧，更经济。但是，与类似钢的焊接相比，它总是涉及焊接过程并在焊缝中产生不同的残余应力。本文通过进行三维（3-D）热弹塑性有限元（FE）分析，揭示了相似和不相似钢焊件中的残余应力特征。本研究中使用的材料是SM400，SM490，SM520和SM570，它们是焊接结构中广泛使用的结构钢。结果表明，相似钢焊件的最大纵向残余应力随焊接钢的屈服应力（SM400

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