任然,冯美艳,陈俊杰,等.大容量海上风电塔筒纵焊残余应力和变形的数值模拟[J].精密成形工程,2025,17(5):207-219.
REN Ran,FENG Meiyan,CHEN Junjie,et al.Numerical Simulation of Residual Stress and Deformation in Longitudinal Welds of Large-capacity Offshore Wind Turbine Towers[J].Journal of Netshape Forming Engineering,2025,17(5):207-219. |
| 大容量海上风电塔筒纵焊残余应力和变形的数值模拟 |
| Numerical Simulation of Residual Stress and Deformation in Longitudinal Welds of Large-capacity Offshore Wind Turbine Towers |
| 投稿时间：2024-07-12 |
| DOI：10.3969/j.issn.1674-6457.2025.05.023 |
| 中文关键词: 大容量风电塔筒 埋弧焊 温度场 应力场 变形 |
| 英文关键词: large-capacity wind turbine tower submerged arc welding (SAW) temperature field stress field deformation |
| 基金项目:福建省科技重大专项(2020HZ03018) |
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| 摘要点击次数: 51 |
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| 中文摘要: |
| 目的 探索不同埋弧焊工艺参数对大容量海上风电塔筒纵焊数值模拟温度场、应力场和变形量的影响规律，选择最优焊接参数以提高焊接接头的性能，获得最佳的焊接质量。方法 利用Abaqus有限元分析软件，建立了塔筒纵焊多层多道焊接的有限元模型，分析了4种不同焊接电压和焊接电流方案对温度场、应力场和变形量的影响规律。结果 不同的热输入导致温度场存在显著差异，温度峰值随焊接电流和电压的增加而增加。应力场分析结果显示，方案一的残余应力最小，其中沿P2路径，纵向残余应力为344 MPa，横向残余应力为340 MPa，沿P1路径，纵向残余应力为187 MPa，横向残余应力为251 MPa。随着电流和电压的增加，残余应力增加。焊缝中轴线上的残余应力主要表现为拉应力，且拉应力的方向垂直于焊缝，而热影响区的主要应力为压应力，离焊缝方向越远，应力越小。变形量分析结果显示，方案一的变形量最小，为13.01 mm，方案四的变形量最大，为14.87 mm，随着电压和电流的增加，焊后最大变形量呈递增趋势。结论 当焊接电流为550 A、焊接电压为25 V时，工件在焊接过程中的温度波动较小，残余应力较低，焊后变形量较小，因此焊接接头表现出较好的性能，焊接质量最佳。 |
| 英文摘要: |
| The work aims to investigate the effect of different submerged arc welding process parameters on the temperature field, stress field, and deformation of longitudinal welds in large-capacity offshore wind turbine towers through numerical simulation, so as to select the optimal welding parameters to enhance the performance of welded joints and achieve the best welding quality. A finite element model for multi-layer multi-pass welding of tower longitudinal welds was established using Abaqus finite element analysis software. The effects of welding voltage and welding current on the temperature field, stress field, and deformation were analyzed. Different heat inputs resulted in significant differences in the temperature field, with peak temperature increasing as welding current and voltage increase. Stress field analysis showed that Scheme 1 had the lowest residual stress, with longitudinal residual stress of 344 MPa and transverse residual stress of 340 MPa perpendicular to the P2 path, and longitudinal residual stress of 187 MPa and transverse residual stress of 251 MPa along the P1 path. As current and voltage increased, residual stress also increased. Residual stress along the weld center line mainly manifested as tensile stress perpendicular to the weld direction, while it primarily manifested as compressive stress in the heat-affected zone, which decreased as the distance from the weld increased. Deformation analysis showed that Scheme 1 had the smallest deformation of 13.01 mm, while Scheme 4 had the largest deformation of 14.87 mm. The maximum post-weld deformation increased with the increase of voltage and current. When the welding current is 550 A and the voltage is 25 V, the workpiece experiences minimal temperature fluctuations, lower residual stress, and smaller post-weld deformation, resulting in better weld joint performance and optimal welding quality. |
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