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| 异种钢激光-电弧焊复合焊接数值模拟 |
| Simulation on Laser-GMAW Hybrid Welding of Heterogeneous Steel |
| Received:May 25, 2015 Revised:July 10, 2015 |
| DOI：10.3969/j.issn.1674-6457.2015.04.015 |
| 中文关键词: 异种钢 热源模型 激光-GMAW 复合焊 应力场 数值模拟 |
| 英文关键词: heterogeneous steel heat source model laser-GMAW hybrid welding welding stress field simulation |
| 基金项目: |
| Author Name | Affiliation | | XU Xin-hou | School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China | | ZHAO Xiao-qiang | School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China | | HUA Peng | School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China | | LI Xian-fen | School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China | | ZHOU Wei | 1. School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China
2. School of Mechanical and Aerospace Engineering, Nan yang Technological University, Singapore 639798, Singapore |
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| 中文摘要: |
| 目的 研究异种钢激光-GMAW 复合焊接温度场以及应力场变化。 方法 运用 ANSYS 有限元分析软件,以 5 mm 厚 D500 钢和 A514 钢为研究对象,采用均匀分布的柱体热源与椭球热源组合的方法,建立了激光-GMAW 焊接热源模型,对异种钢激光电弧复合焊接过程进行了模拟计算,并与实验所得的焊缝形状以及焊后残余应力进行了对比。 结果 结果表明,异种钢激光电弧复合焊接过程焊接变形以及残余应力实验结果与数值计算结果吻合较好。 结论 验证了锥体加柱体热源与椭球热源的组合热源模型在异种钢激光-GMAW 复合焊接温度场及应力场模拟中的适用性,从而为不同焊接工艺条件下异种钢激光-GMAW 复合焊接的焊缝形状和尺寸预测,提供了一种有效的途径。 |
| 英文摘要: |
| on the aim of this study was to investigate the welding thermal field and residual stress field of laser-GMAW hybrid welding. ANSYS finite element software was employed to simulate the welding thermal field and residual stress field of Heterogeneous steel. Laser-GMAW hybrid welding source model was built by using Ellipsoid-Cylinder-Cone hybrid heat method, and the results were analyzed. The simulated results were coincided well to the experimental results. The laser- GMAW hybrid welding source model is applicable in the simulation of welding thermal field and residual stress field of Het- erogeneous steel, which provided an effective method for predicting weld seam shape and size of heterogeneous steel under different welding conditions. |
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