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交变载荷作用下平面应力状态焊接接头焊趾处应力应变理论解的推导

薛钢, 王涛, 宫旭辉, 方洪渊

薛钢, 王涛, 宫旭辉, 方洪渊. 交变载荷作用下平面应力状态焊接接头焊趾处应力应变理论解的推导[J]. 焊接学报, 2015, 36(4): 97-100,105.
引用本文: 薛钢, 王涛, 宫旭辉, 方洪渊. 交变载荷作用下平面应力状态焊接接头焊趾处应力应变理论解的推导[J]. 焊接学报, 2015, 36(4): 97-100,105.
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XUE Gang, WANG Tao, GONG Xuhui, FANG Hongyuan. Theory solution of weld toe stress and strain of weld joint under cyclic loading in plane stress condition[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(4): 97-100,105.
Citation: XUE Gang, WANG Tao, GONG Xuhui, FANG Hongyuan. Theory solution of weld toe stress and strain of weld joint under cyclic loading in plane stress condition[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(4): 97-100,105.
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交变载荷作用下平面应力状态焊接接头焊趾处应力应变理论解的推导

  • 1.

    哈尔滨工业大学先进焊接与连接国家重点试验室, 哈尔滨 150001;中国船舶重工集团公司第七二五研究所, 洛阳 471023

  • 2.

    中国船舶重工集团公司第七二五研究所, 洛阳 471023

  • 3.

    哈尔滨工业大学先进焊接与连接国家重点试验室, 哈尔滨 150001

Theory solution of weld toe stress and strain of weld joint under cyclic loading in plane stress condition

  • 1.

    State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;Luoyang Ship Material Research Institute, Luoyang 471023, China

  • 2.

    Luoyang Ship Material Research Institute, Luoyang 471023, China

  • 3.

    State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

摘要

    摘要
  • 摘要: 基于弹塑性力学理论计算对接接头交变载荷作用下焊趾处应力和应变,以准确预测交变载荷作用下平面应力状态对接接头焊趾处的应力和应变值为目标,考察了不同加载情况下平面应力状态对接接头焊趾处应力和应变的理论计算方法,并给出了交变载荷作用下平面应力状态对接接头焊趾处应力和应变的理论解.结果表明,在材料参数、载荷大小以及焊趾应力集中系数已知的前提下,根据提出的理论解的计算式可获得相应载荷时接头焊趾处的应力应变,为焊接接头在交变载荷下的疲劳失效预测提供理论指导.
    Abstract: A theoretical method was proposed to precisely predict stress and strain in weld toe of butt joint under cyclic loading in plane stress condition, based on elastic-plastic mechanics theory. The analytical solutions of stress and strain in weld toe of butt joint under cyclic loading in plane stress condition were obtained. The stress and strain in weld toe could be calculated by analytical solution when the material properties, load value and stress concentration factor on the weld toe were known. The proposed method could predict fatigue failure of welded joint under cyclic loading.
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    • 参考文献(6)
  • [1] 张彦华.焊接结构疲劳分析[M].北京:化学工业出版社, 2013.
    [2] 兆文忠,魏鸿亮,方吉.基于主S-N曲线法的焊接结构虚拟疲劳试验理论与应用[J].焊接学报, 2014, 35(5):75-78. Zhao Wenzhong, Wei Hongliang, Fang Ji. The theory and application of the virtual fatigue test of welded structures based on the master S-N curve method[J]. Transactions of the China Welding Institution, 2014, 35(5):75-78.
    [3] 李明娜,刘峰.拉保持对316L奥氏体不锈钢焊接接头低周疲劳循环应力响应及损伤机制的影响[J].焊接学报, 2014, 35(9):87-91. Li Mingna, Liu Feng. Effect of tensile dwell on low cycle fatigue cyclic stress response and damage mechanism of 316L austenitic stainless steel welding joint[J]. Transactions of the China Welding Institution, 2014, 35(9):87-91.
    [4] 张涛,王东坡,邓彩艳.双周疲劳载荷作用下焊接接头线性累计损伤分析[J].焊接学报, 2014, 35(3):61-65. Zhang Tao, Wang Dongpo, Deng Caiyan. Linear cumulative damage analysis of welded joints under combined cycle fatigue[J]. Transactions of the China Welding Institution, 2014, 35(3):61-65.
    [5] 薛钢,王涛,方洪渊.异质接头应力集中系数与坡口角度和材料差异度的关系方程[J].焊接学报, 2014, 35(8):95-98. Xue Gang, Wang Tao, Fang Hongyuan. Stress concentration factor equation of heterogeneity joint based on slope angle and material difference[J]. Transactions of the China Welding Institution, 2014, 35(8):95-98.
    [6] 王佳杰,董志波,方洪渊.低匹配对接接头形状参数对三点弯曲应力集中系数的影响[J].焊接学报, 2013, 34(1):73-76. Wang Jiajie, Dong Zhibo, Fang Hongyuan. Influence of joint geometric parameters on stress concentration factor for under-matched butt joint under three-point bending load[J]. Transactions of the China Welding Institution, 2013, 34(1):73-76.
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  • 收稿日期:  2014-11-14

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