| 螺旋焊管焊缝噘嘴应力分析方法 |
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| 引用本文： | 赵新伟,罗金恒,路民旭,李鹤林,张田忠. 螺旋焊管焊缝噘嘴应力分析方法[J]. 焊接学报, 2004, 25(1): 25-28,32 |
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| 作者姓名： | 赵新伟 罗金恒 路民旭 李鹤林 张田忠 |
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| 作者单位： | 西安交通大学,材料科学与工程学院,西安,710049;中国石油天然气集团公司,管材研究所,西安,710065;中国石油天然气集团公司,管材研究所,西安,710065;西安交通大学,材料科学与工程学院,西安,710049 |
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| 基金项目： | 中国石油天然气集团公司“九·五”重点应用基础研究项目 (980 70 4-0 1) |
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| 摘 要： | 螺旋焊管焊缝噘嘴问题是复杂的三维问题，国际上目前尚无现成的应力计算公式可以利用。作者建立了螺旋焊缝噘嘴应力分析的力学模型，在直焊缝噘嘴应力的理论解基础上。通过理论分析和有限元数值分析，提出了螺旋焊管焊缝噘嘴附加弯曲应力和焊缝噘嘴部位最大应力的显式解。给出了螺旋焊管焊缝极限噘嘴高度的计算公式，为螺旋焊管质量控制和安全性评定提供了理论依据。
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| 关 键 词： | 管道 螺旋焊缝 噘嘴 弯曲应力 |
| 文章编号： | 0253-360X(2004)01-25-05 |
| 收稿时间： | 2003-05-13 |
Stress analysis method of weld angular distortion for spiral welding pipeline |
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| ZHAO Xin-wei,LUO Jin-heng,LU Min-xu,LI He-lin and ZHANG Tian-zhong. Stress analysis method of weld angular distortion for spiral welding pipeline[J]. Transactions of The China Welding Institution, 2004, 25(1): 25-28,32 |
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| Authors: | ZHAO Xin-wei LUO Jin-heng LU Min-xu LI He-lin ZHANG Tian-zhong |
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| Affiliation: | ZHAO Xin-wei~ |
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| Abstract: | Since the stress concentration analysis of weld angular distortion in spiral welding pipeline concerns complicated three-dimensional mechanics issues , there are no formulae and methods available for it in published literatures. Mechanics model for the stress analysis of spiral weld angular distortion has been established in this paper. Based on the reported theoretic formulae for stress analysis of straight weld angular distortion , additional bending stress and the maximum stress calculation formulae due to spiral weld angular distortion were suggested through combining theoretic analysis with FEM simulation calculating and validating. The determination method for limit of spiral weld angular distortion was given to provide theoretic basis for quality control and safety assessment of spiral welding pipeline. |
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| Keywords: | pipeline spiral welding angular distortion stress concentration |
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