| 引用本文: | 成利强,王天琪,李亮玉,郑佳.多层多道焊温度和热应力场对角变形影响分析[J].材料科学与工艺,2019,27(4):50-56.DOI:10.11951/j.issn.1005-0299.20180058. |
| CHENG Liqiang,WANG Tianqi,LI Liangyu,ZHENG Jia.Effect of temperature field and thermal stress field on angular deformation of multi-layer multi-pass welding[J].Materials Science and Technology,2019,27(4):50-56.DOI:10.11951/j.issn.1005-0299.20180058. |
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| 摘要: |
| 为探究Q235中厚板多层多道焊温度与热应力耦合场作用下对工件角变形的影响，利用有限元软件COMSOL对中厚板多层多道焊温度和热应力耦合场进行分析.通过建立中厚板多层多道焊温度与热应力耦合场模型，对工件不同方向温度场、热应力场的变化以及工件最终角变形情况进行模拟，并将模拟结果与相同工艺条件下焊接试验结果进行比较验证.结果表明：仿真分析结果与焊接实验结果具有较好的重合度；温度和热应力耦合场主要作用于工件的横向和纵向，对厚度方向的角变形影响较小.这为后续多层多道焊接角变形问题的进一步研究奠定了基础. |
| 关键词: 中厚板 多层多道焊 温度场 热应力场 角变形 |
| DOI：10.11951/j.issn.1005-0299.20180058 |
| 分类号:TG441 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(U1733125)；天津市自然科学基金项目(17JCZDJC387020). |
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| Effect of temperature field and thermal stress field on angular deformation of multi-layer multi-pass welding |
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CHENG Liqiang, WANG Tianqi, LI Liangyu, ZHENG Jia
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(Advanced Mechatronics Equipment Technology Tianjin Area Laboratory (Tianjin Polytechnic University), Tianjin 300387, China)
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| Abstract: |
| In order to investigate the effect of multi-layer multi-pass welding in Q235 medium and thick plate temperature and thermal stress coupling field on workpiece angle deformation, the coupling field of temperature and thermal stress of multi-layer multi-pass welding of medium and thick plate was analyzed by using finite element analysis software COMSOL. Through establishing the coupling field model of temperature and thermal stress of multi-layer and multi-pass welding of medium and thick plates, the variation of temperature field, thermal stress field, and final angle deformation of the workpiece in different directions were simulated, and the simulation results were compared with the welding test results under the same process conditions. Results show that the thermal stress field and the temperature field agreed well. The coupling field of temperature and thermal stress mainly acted on the transverse and longitudinal of the workpiece, but had little effect on the angular deformation in the thickness direction. This study lays a foundation for the further study of the angle deformation of multi-layer and multi-pass welding. |
| Key words: medium and thick plate multi-layer multi-pass welding temperature field thermal stress field angular deformation |
