| 焊接坡口对焊接接头安定性的影响研究 |
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| 引用本文： | 郑小涛,彭常飞,喻九阳,王明伍,陈瑶.焊接坡口对焊接接头安定性的影响研究[J].压力容器,2012,29(10):1-6. |
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| 作者姓名： | 郑小涛 彭常飞 喻九阳 王明伍 陈瑶 |
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| 作者单位： | 武汉工程大学 机电工程学院,湖北武汉,430205 |
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| 基金项目： | 国家自然科学基金项目（NO.50976080）;武汉工程大学科学研究基金项目（NO.14125061） |
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| 摘 要： | 结合非线性叠加法和通用有限元软件ABAQUS研究了循环热-机械载荷下对焊接接头的安定性,并比较了UV形、双U形、X形、U形、单面焊及V形等6种焊接坡口形式对焊接接头安定性的影响。结果表明,选用U形坡口(焊接厚度20 mm≤t≤60 mm)及选用双U形坡口(焊接厚度t>60 mm)连接时焊接接头的安定域较大,在循环热-机械载荷下具有更好的承载能力。此研究对厚壁压力容器及管道对焊焊接接头的设计有一定指导意义。
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| 关 键 词： | 安定性 焊接接头 焊接坡口 热-机械载荷 |
Effect of the Weld Groove Shape on the Shakedown Behavior of Butt Welded Joints |
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| ZHENG Xiao-tao
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PENG Chang-fei
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YU Jiu-yang
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WANG Ming-wu
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CHEN Yao.Effect of the Weld Groove Shape on the Shakedown Behavior of Butt Welded Joints[J].Pressure Vessel Technology,2012,29(10):1-6. |
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| Authors: | ZHENG Xiao-tao PENG Chang-fei YU Jiu-yang WANG Ming-wu CHEN Yao |
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| Affiliation: | (Wuhan Institute of Technology,School of Mechanical Engineering,Wuhan 430205,China) |
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| Abstract: | The shakedown behavior of butt welded joints under cyclic thermo-mechanical loadings was researched by ABAQUS according to the nonlinear superstition method.Six weld groove shapes of type UV-groove,double U-groove,X-groove,U-groove,single-side welding and V-groove were further studied.Results showed that the type U-groove for the welding thickness 20 mm≤t≤60 mm while the type double U-groove for the welding thickness t60 mm should be utilized for butt welded joints due to the greater shakedown region and thus the greater load carrying capacity under cyclic thermo-mechanical loadings.This study has some guidance significance for engineering designs of butt welded joints of thick pressure vessels and piping. |
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| Keywords: | shakedown welded joints weld groove shape thermo-mechanical loadings |
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