| 用可变长度热源模拟奥氏体不锈钢多层焊对接接头的焊接残余应力 |
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| 引用本文： | 邓德安,清岛祥一.用可变长度热源模拟奥氏体不锈钢多层焊对接接头的焊接残余应力[J].金属学报,2010(2). |
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| 作者姓名： | 邓德安 清岛祥一 |
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| 作者单位： | 重庆大学材料科学与工程学院;计算力学研究中心技术开发部; |
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| 摘 要： | 采用可变长度热源模型对奥氏体不锈钢平板多层焊对接接头的残余应力进行了数值模拟,同时也用实验方法测量了平板对接接头上下表面的残余应力,通过比较由热弹塑性有限元计算得到的残余应力与由电阻应变片法测量得到的实验结果得知,采用该模型对多层焊对接接头残余应力的数值模拟,不仅可以大大缩短计算时间,也可以得到较高的计算精度。
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| 关 键 词： | 焊接残余应力 数值模拟 奥氏体不锈钢 可变长度热源 |
NUMERICAL SIMULATION OF WELDING RESIDUAL STRESSES IN A MULTI-PASS BUTT-WELDED JOINT OF AUSTENITIC STAINLESS STEEL USING VARIABLE LENGTH HEAT SOURCE |
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| DENG De'an College of Materials Science & Engineering,Chongqing University,Chongqing KIYOSHIMA Shoichi.NUMERICAL SIMULATION OF WELDING RESIDUAL STRESSES IN A MULTI-PASS BUTT-WELDED JOINT OF AUSTENITIC STAINLESS STEEL USING VARIABLE LENGTH HEAT SOURCE[J].Acta Metallurgica Sinica,2010(2). |
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| Authors: | DENG De'an College of Materials Science & Engineering Chongqing University Chongqing KIYOSHIMA Shoichi |
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| Affiliation: | DENG De'an College of Materials Science & Engineering,Chongqing University,Chongqing 400045 KIYOSHIMA Shoichi Department of Technical Development,Research Center of Computational Mechanics,Inc.,Tokyo 142-0041,Japan |
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| Abstract: | Recent discoveries of stress corrosion cracking at welded joints in pressurized water reactors and boiling water reactors have raised wide concerns about the safety and integrity of plant components.It has been recognized that residual stress and applied stress on their surfaces largely increase the expanding risk of initial stress corrosion cracking.Therefore,it is very important to investigate the welding residual stress in welded joints.It is very expensive and time consuming to measure the residual stre... |
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| Keywords: | welding residual stress numerical simulation austenitic stainless steel variable length heat source |
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