Numerical investigation of residual thermal stresses in welded joints of heterogeneous steels with account of technological features of multi-pass welding

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• 作者：R.A. Krektuleva^a ; ^{rakrekt@mail.ru} ; O.I. Cherepanov^b ; ^{oi_cherepanov@mail.ru} ; R.O. Cherepanov^c ; ^{rcherepanov82@gmail.com}
• 关键词：Residual stresses ; Structural heterogeneity ; Strain localization
• 刊名：Applied Mathematical Modelling
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：42
• 期：Complete
• 页码：244-256
• 全文大小：4024 K
• 卷排序：42

文摘

A 2D model is developed for residual stresses calculations at multi-pass welding. It is shown that the residual stresses affect the strain localization in welds. Numerical model based on variational statement for heat transfer problem is described. Results of quasi-static modeling of termoplastic steel behavior are discussed. A model of the thermoplastic behavior of steel with phase transitions is proposed.