| 多道焊三维残余应力场有限元模拟 |
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| 引用本文： | 倪红芳,凌祥,涂善东.多道焊三维残余应力场有限元模拟[J].机械强度,2004,26(2):218-222. |
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| 作者姓名： | 倪红芳 凌祥 涂善东 |
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| 作者单位： | 南京工业大学,机械与动力工程学院,南京,210009 |
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| 基金项目： | 江苏省自然科学基金资助项目 (BK2 0 0 1 0 98)~~ |
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| 摘 要： | 运用大型有限元计算软件ABAQUS，对316L不锈钢平板多道焊接头的温度场和残余应力场进行模拟。有限元模型中选用三维实体单元，考虑材料物理性能随温度的变化和周边对流、辐射散热的影响。运用内生热的加载方法模拟焊接热源，运用单元激活技术模拟多道焊焊接过程。获得了三维多道焊焊接温度场和残余应力场，并对计算结果进行分析。
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| 关 键 词： | 多道焊 有限元 数值模拟 温度场 残余应力场 不锈钢 焊接接头 |
SIMULATION OF 3D RESIDUAL STRESSES FIELD OF MULTI-PASS WELDING BY FEM |
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| NI HongFang,LING Xiang,TU ShanTong.SIMULATION OF 3D RESIDUAL STRESSES FIELD OF MULTI-PASS WELDING BY FEM[J].Journal of Mechanical Strength,2004,26(2):218-222. |
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| Authors: | NI HongFang LING Xiang TU ShanTong |
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| Abstract: | Temperature and stress field of 316L stainless steel is simulated by FEM using ABAQUS codes. The 3-D solid elements are used in FEM model, and temperature depended material properties are considered as well as the convection and radiation as boundary conditions. Internal heat generation loading method is applied to simulate heat source, and model change ability to simulate multi-pass weld. The temperature field and residual stress field of 3-D multi-pass weld are obtained, and the results are discusses. |
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| Keywords: | Multi-pass welding Simulation by finite element method Temperature field Residual stress field |
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