刘庭,赵晓鑫,朱加雷,等.7A52铝合金激光-MIG复合焊接数值模拟[J].精密成形工程,2025,17(6):150-159.
LIU Ting,ZHAO Xiaoxin,ZHU Jialei,et al.Numerical Simulation of Laser-MIG Hybrid Welding of 7A52 Aluminum Alloy[J].Journal of Netshape Forming Engineering,2025,17(6):150-159. |
| 7A52铝合金激光-MIG复合焊接数值模拟 |
| Numerical Simulation of Laser-MIG Hybrid Welding of 7A52 Aluminum Alloy |
| 投稿时间：2025-03-11 |
| DOI：10.3969/j.issn.1674-6457.2025.06.016 |
| 中文关键词: 7A52铝合金 激光-MIG复合焊接 热源模型 温度场 应力场 |
| 英文关键词: 7A52 aluminum alloy laser-MIG hybrid welding heat source model temperature field stress field |
| 基金项目:国家自然科学基金(52205331);北京市科技计划重点项目(KZ202210017023);国家自然科学基金联合基金重点支持项目(U22B20127) |
|
| 摘要点击次数: 27 |
| 全文下载次数: 4 |
| 中文摘要: |
| 目的 探究7A52铝合金激光-MIG复合焊接过程中温度场变化、熔池演变行为及材料形变缺陷形成的耦合机制，为优化复合焊接工艺参数与抑制焊接缺陷提供有力依据。方法 使用Abaqus有限元分析软件，采用圆锥体热源与双椭球热源组合模型，对中厚板7A52铝合金激光-MIG复合焊接进行数值模拟，通过焊接实验验证数值模型的可靠性。结果 实际焊接过程中的最大变形量约为2 mm，模拟最大变形量为1.72 mm，模拟温度峰值达2 050 ℃、等效应力峰值达301 MPa，数值模拟的焊缝截面尺寸形貌与实际焊缝截面的基本一致。结论 所选用的组合热源模型适用于铝合金的激光-MIG复合焊接，实验优化后得到了最佳的焊接工艺参数，采用优化后的焊接工艺参数能有效抑制焊接过程中温度非均匀分布与残余应力集中引发的材料形变缺陷。 |
| 英文摘要: |
| The work aims to investigate the coupling mechanism of temperature field change, molten pool evolution and material deformation defects during laser-MIG hybrid welding of 7A52 aluminum alloy, to provide a strong basis for optimizing the hybrid welding process parameters and inhibiting welding defects. With Abaqus finite element analysis software, the numerical simulation of laser-MIG hybrid welding of medium-thick plate 7A52 aluminum alloy was carried out by the combination model of cone heat source and double ellipsoid heat source, and the reliability of the numerical model was verified through welding experiments. The maximum deformation in the actual welding process was about 2 mm, the maximum deformation in the simulation was1.72 mm, the simulated temperature peak value reached 2 050 ℃, the equivalent force peak value reached 301 MPa, and the size and shape of the numerically simulated weld section was basically the same as that of the actual weld section. The selected combined heat source model is suitable for laser-MIG hybrid welding of aluminum alloy, and the best welding process parameters are obtained after experimental optimization. The optimized welding process can effectively inhibit the material deformation defects caused by non-uniform temperature distribution and residual stress concentration during the welding process. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
渝公网安备 50010702501719号