郭龙龙,曹嘉晨,徐斌荣.基于Abaqus二次开发的天然气管道在役焊接热力耦合模拟[J].精密成形工程,2023,15(6):76-85.
GUO Long-long,CAO Jia-chen,XU Bin-rong.Thermo-mechanical Coupling Simulation of In-service Welding for Natural Gas Pipelines Based on Abaqus Secondary Development[J].Journal of Netshape Forming Engineering,2023,15(6):76-85. |
| 基于Abaqus二次开发的天然气管道在役焊接热力耦合模拟 |
| Thermo-mechanical Coupling Simulation of In-service Welding for Natural Gas Pipelines Based on Abaqus Secondary Development |
| |
| DOI：10.3969/j.issn.1674-6457.2023.06.010 |
| 中文关键词: 在役焊接 Abaqus Python 二次开发 温度峰值 径向变形 |
| 英文关键词: in-service welding Abaqus Python secondary development peak temperature radial deformation |
| 基金项目:国家油气钻井装备工程技术研究中心开放基金(BOMCOJ118–JKY016–2023);陕西省自然科学基础研究计划(2020JQ–780);陕西省教育厅科研计划(22JP065);材料腐蚀与防护四川省重点实验室开放基金(2022CL27) |
|
| 摘要点击次数: 1732 |
| 全文下载次数: 916 |
| 中文摘要: |
| 目的 研究直径、压力对天然气管道在役焊接温度场和径向变形的影响规律，并提高变参数分析的建模效率，减少大量重复操作。方法 以Abaqus软件为平台，利用Abaqus GUI Toolkit软件开发参数输入界面，利用Python语言编辑主程序，开发用于天然气管道在役焊接热力耦合有限元模拟的参数化插件，实现几何模型建立、材料与截面属性设置、网格划分、分析步建立、焊缝单元生死控制、边界条件施加的快速自动完成。利用所开发的参数化插件，对不同直径、压力条件下管道在役焊接的热力耦合场进行分析。结果 随着压力增加、管道直径减小，熔池及其正下方管道内壁的温度峰值逐渐降低。在管道在役焊接过程中，径向变形是主导、周向变形次之、轴向变形最小。随着管道直径的增加，压力对熔池正下方管道内壁径向变形的影响愈加显著，并且两者呈正相关。结论 所开发的参数化插件可用于管道在役焊接热力耦合分析，显著减少了变参数模拟的工作量，提高了建模效率。研究成果可为管道在役焊接模型的建立和工艺参数的优化提供参考。 |
| 英文摘要: |
| The work aims to explore the effect of pipeline diameter and pressure on the temperature field and radial deformation of the nature gas pipeline during in-service welding, to improve the modelling efficiency of variable parameter analysis and reduce repetitive operation. Based on the Abaqus software platform, the Abaqus GUI toolkit was used to develop the graphical interface of key parameters, and the Python language was used to edit the main program. The establishment of geometric model, setting of material and section attributes, mesh division, establishment of analysis steps, control of weld element birth and death, and setting of boundary conditions were realized quickly and automatically by the established parametric model. The thermo-mechanical coupling fields of pipelines during in-service welding under different diameter and pressure conditions were analyzed. The results showed that with the increase of pressure and decrease of pipeline diameter, the peak temperature under the molten pool and the inner wall decreased gradually. As to the deformation, radial deformation was dominant, followed by circumferential deformation, and axial deformation was the smallest. Moreover, with the increase of pipeline diameter, the effect of pressure on the radial deformation of the pipeline inner wall under the molten pool increased significantly, and the relationship between them was positively correlated. Therefore, the parametric model developed can be used for thermal mechanical coupling analysis of pipelines in-service welding. It reduces the workload of temperature field simulation of pipelines in-service welding under variable parameters, and improves the efficiency of finite element modelling. The outcomes of this research provide reference for the establishment of in-service pipeline welding model and optimization of process parameters. |
|
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