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复合涂层堆焊温度场应力场模拟
发表时间：2011-08-15 浏览量：1563 下载量：453
| 全部作者： | 牟睿敏，周霞 |
| 作者单位： | 大连理工大学运载工程与力学学部；工业装备结构分析国家重点实验室 |
| 摘 要： | 运用大型有限元计算软件ANSYS对25号钢平板多道焊的温度场和残余应力场进行模拟。利用ANSYS中的参数化语言（ANSYS parametric design language, APDL）编写程序，采用间接分析的方法，以确保在划分网格时焊缝处的网格细密，远离焊缝处的网格粗略。模拟焊接过程中呈高斯分布的移动热源的加载，实现对焊接温度场的三维动态模拟，得到了焊接温度场和应力场的计算结果，并发现合适的焊接层间温度能够降低残余应力，提高焊接质量，为进一步研究消除焊接残余应力的方法提供了依据。 |
| 关 键 词： | 损伤力学；应力场；有限元；温度场；层间温度 |
| Title： | Simulation for temperature and stress field about composite coating |
| Author： | MU Ruimin, ZHOU Xia |
| Organization： | Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology; State Key Laboratory of Structural Analysis for Industrial Equipment |
| Abstract： | In this paper, temperature and stress field of 25 steel is simulated by finite element analysis using ANSYS codes. Based on ANSYS (ANSYS parametric design language, APDL) developing platform, the indirect method is used to make the grid of welds fine and make the grid away from the welds rough. The program is to simulate the GAUSS function heat load and obtain the three dimensional dynamical temperature filed for build�up welding. At last, the result of welding temperature field, stress and strain field is obtained, and it is found that a suitable temperature between layers can reduce residual stress and improve the welding quality. It provides foundation for the further study of the method for eliminating welding residual stress. |
| Key words： | damage mechanics; stress field; finite element method; temperature field; layer temperature |
| 发表期数： | 2011年8月第15期 |
| 引用格式： | 牟睿敏，周霞. 复合涂层堆焊温度场应力场模拟[J]. 中国科技论文在线精品论文，2011，4（15）：1418-1424. |
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