| 低匹配对接接头应力集中系数计算及回归分析 |
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| 引用本文： | 赵智力,杨建国,刘雪松,方洪渊,伍芳斌.低匹配对接接头应力集中系数计算及回归分析[J].焊接学报,2008,29(7):109-112. |
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| 作者姓名： | 赵智力 杨建国 刘雪松 方洪渊 伍芳斌 |
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| 作者单位： | 哈尔滨工业大学现代焊接生产技术国家重点实验室,哈尔滨,150001 |
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| 摘 要： | 针对高强钢低匹配的横向对接接头形状设计,以最大限度提高接头静载承载能力和疲劳强度为目标,采用有限元计算的方法,考察了焊缝余高、焊趾过渡圆弧半径、盖面焊道宽度、板厚等几何参数对焊趾和焊根处应力集中的影响,回归分析得出的焊趾和焊根处的应力集中系数的经验方程式,对高强钢低匹配对接接头设计具有指导意义.
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| 关 键 词： | 接头形状 应力集中系数 焊趾和焊根 低匹配 对接接头设计 |
| 收稿时间： | 2007/10/8 0:00:00 |
Finite element calculation and regression analysis on stress concentration factors of undermatching butt joints |
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| ZHAO Zhili,YANG Jianguo,LIU Xuesong,FANG Hongyuan and WU Fangbin.Finite element calculation and regression analysis on stress concentration factors of undermatching butt joints[J].Transactions of The China Welding Institution,2008,29(7):109-112. |
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| Authors: | ZHAO Zhili YANG Jianguo LIU Xuesong FANG Hongyuan and WU Fangbin |
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| Affiliation: | State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001,State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001,State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001,State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001 and State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001 |
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| Abstract: | To enhance the static and fatigue strength of undermatching butt joint of high strength steel under transverse loading, the influences of geometric parameters such as excess of weld metal, radius of curvature at weld toe, plate thickness and total width of cover pass in butt-welded joint on stress concentration factors at weld toe and weld root were studied by finite element method.Based on these simulation results, the empirical equations of stress concentration factors at weld toe and weld root were obtained by regression analysis, which offers a significant guide for joint design of undermatching butt joint of high strength steel. |
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| Keywords: | joint geometry stress concentration factors weld toe and weld root undermatch butt-welded joint design |
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