This paper proposes an analytical model for the stress-strain state in a welded joint with a hard single-V butt weld. Analytical expressions for the stress-strain state in both the hard weld and the mild main material subjected to elasto-plastic deformation are proposed. In order to verify the proposed expressions, a finite element simulation of the stress-strain state in a welded joint with a hard single-V butt weld was carried out and the results were compared to the analytical results obtained applying the proposed analytical model. The analytical solution was basically consistent with the finite element analysis results. The proposed analytical model can be used in design practice for assessment of the stress-strain state in welded joints.

中文翻译：

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硬单V对接焊缝焊接接头的应力-应变状态研究

本文提出了具有单V硬对接焊缝的焊接接头应力-应变状态的解析模型。提出了硬焊缝和低碳主体材料在弹塑性变形作用下的应力-应变状态的解析表达式。为了验证所提出的表达式，对具有单V硬对接焊缝的焊接接头的应力-应变状态进行了有限元模拟，并将结果与​​使用所提出的分析模型获得的分析结果进行了比较。解析解与有限元分析结果基本一致。所提出的分析模型可以在设计实践中用于评估焊接接头的应力-应变状态。