| 正交接管焊接残余应力的三维有限元模拟 |
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| 引用本文： | 薛小龙,王志亮,桑芝富,朱加贵.正交接管焊接残余应力的三维有限元模拟[J].机械科学与技术(西安),2006,25(5):525-529. |
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| 作者姓名： | 薛小龙 王志亮 桑芝富 朱加贵 |
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| 作者单位： | [1]南京工业大学机械与动力工程学院,南京210009 [2]南京扬子石化检修安装有限责任公司,南京210048 |
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| 基金项目： | 中石化总公司资助项目;南京工业大学校科研和校改项目 |
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| 摘 要： | 对正交接管焊接接头的温度场和应力场进行了数值模拟。选用三维实体单元,考虑材料物理性能随温度的变化和相变的影响,采用内部热生成和振幅曲线的加载方法模拟焊接热源的移动,运用单元生死技术模拟多道焊过程。获得了焊接温度场和应力场的动态变化过程,并对计算结果进行了分析。
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| 关 键 词： | 正交接管 温度场 应力场 数值模拟 |
| 文章编号： | 1003-8728（2006）05-0525-05 |
| 收稿时间： | 2005-02-26 |
| 修稿时间： | 2005-02-26 |
3-D FEM Simulation of Welding Residual Stress of Orthogonal Nozzles |
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| Xue Xiaolong,Wang Zhiliang,Sang Zhifu,Zhu Jiagui.3-D FEM Simulation of Welding Residual Stress of Orthogonal Nozzles[J].Mechanical Science and Technology,2006,25(5):525-529. |
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| Authors: | Xue Xiaolong Wang Zhiliang Sang Zhifu Zhu Jiagui |
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| Affiliation: | 1.College of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 210009; 2.Nanjing Yangzi Petrochemical Maintenance and Installation Co. Ltd. , Nanjing 210048 |
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| Abstract: | Temperature and stress fields of multi-pass welding of orthogonal nozzles were simulated. 3-D solid elements were used in consideration with temperature dependent material properties and effects of phase transition. Internal heat generation and amplitude loading were source movement. The process of multi-pass welding was simulated by technique. Temperature distribution and stress variation during welding suits were discussed. used for simulating welding heat using an element birth and death were achieved and calculation results were discussed. |
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| Keywords: | orthogonal nozzle temperature field stress field numerical simulation |
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