Research on lightweight solver for welding thermal cycle based on Lagrange-Galerkin finite element method
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摘要: 焊接热循环的干扰因素多、变化速度快、影响范围广，常需要对其进行即时预测与控制，以保证焊接质量。以焊缝中心温度分布与变化为研究对象，将其简化为一维焊接热循环瞬态热传导问题，并基于Lagrange-Galerkin有限元方法，进行算域离散与插值。开发了一种轻量化的焊接热循环求解算法，研究不同时刻下焊缝中心温度分布曲线与变化曲线的即时变化。以镍基Inconel 718合金2 mm薄板对接接头为例，进行数值模拟实例演算，结果表明计算耗时约0.41~0.72 s，满足数据与轻量化计算的要求。Abstract: The welding thermal cycle has many interfering factors, fast changing speed and wide influence range, so it is often necessary to predict and control them immediately to ensure the welding quality. Taking the temperature distribution and change of weld center as the research object, and it was simplified to the transient heat conduction problem of one-dimensional welding heat cycle. Based on Lagrange-Galerkin finite element method, a lightweight welding thermal cycle algorithm was developed to study the immediate changes of the temperature distribution curve and change curve of the weld center at different times. The results show that the calculation time is about 0.41~0.72 s, which meets the requirements of data and lightweight calculation.
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Key words:
- finite element method /
- discretization /
- lightweight /
- heat conduction /
- weld thermal cycle
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图 2 不同时刻下焊缝中心线温度分布曲线
Figure 2. Temperature distribution curves on weld centre line at different times
图 3 焊缝中心线距起始端50 mm处温度变化曲线
Figure 3. Temperature curve on weld center line distance from initiating terminal approximately 50 mm
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[1] SUN J, DILGER K. Reliability analysis of thermal cycle method on the prediction of residual stresses in arc-welded ultra-high strength steels[J] . International Journal of Thermal Sciences,2023,185:108085. [2] XUJ, WANG S, CHAI Z, et al. Characterization and modeling of the hardening and softening behaviors for 7XXX aluminum alloy subjected to welding thermal cycle[J] . Mechanics of Materials,2022,172:104405. [3] 张萍, 韩涛. 不同因素对管道带压焊热循环曲线的影响分析[J] . 北京石油化工学院学报,2022,30(2):1 − 5. [4] 廖娟, 程鹏, 冯芳等. 基于热循环曲线法的低合金高强钢对接接头焊接残余应力数值模拟[J] . 机械工程材料,2023,47(7):85 − 90. [5] 寇东旭, 陈重毅, 陈正宗等. 焊接热循环及峰值温度对C-HRA-2镍基合金组织演变的影响(英文)[J] . 稀有金属材料与工程,2023,52(7):2377 − 2384. [6] 王刚, 尹立孟, 唐丽等. 经历多次热循环的X80管线钢焊接粗晶区的组织性能研究[J] . 重庆科技学院学报(自然科学版),2023,25(1):57 − 61 , 104. [7] HERNÁNDEZ M, AMBRIZ R R, CORTÉS R, et al. Assessment of gas tungsten arc welding thermal cycles on Inconel 718 alloy[J] . Transactions of Nonferrous Metals Society of China,2019,29(3):579 − 587. [8] 鲍亮亮, 王勇, 张洪杰等. EQ70钢激光电弧复合焊焊接热循环及其对热影响区组织演变的影响[J] . 焊接学报,2021,42(3):26 − 33 , 99. [9] 胡美娟, 何浩华, 齐丽华等. 焊接物理模拟热循环计算公式的研究[J] . 石油管材与仪器,2020,6(5):50 − 53. [10] 黄鹏儒, 周勇. 连续油管在制管和焊接热循环模拟过程中组织性能的变化[J] . 热加工工艺,2020,49(17):15 − 18 , 23. [11] 霍春梅, 唐春, 凌锡春. 液力变矩器盖总成焊接热循环仿真应用研究[J] . 机械工程师,2020(6):109 − 111. [12] 王泽平, 房雲峰, 姜宝龙等. 基于Arduino的焊接热循环测试系统[J] . 内燃机与配件,2020(9):248 − 249. [13] 许波. X80管线钢焊接热循环参数及残余应力仿真与实验研究[D]. 乌鲁木齐: 新疆大学, 2021. [14] ÁLVAREZ HOSTOS J C, STORTI B, TOURN B A, et al. Solving heat conduction problems with a moving heat source in arc welding processes via an overlapping nodes scheme based on the improved element-free Galerkin method[J] . International Journal of Heat and Mass Transfer,2022,192:122940. [15] CHAMPAGNE O, PHAM X-T. Numerical simulation of moving heat source in arc welding using the Element-free Galerkin method with experimental validation and numerical study[J] . International Journal of Heat and Mass Transfer,2020,154:119633. [16] LIU K, LAKHOTE M, BALACHANDAR S. Self-induced temperature correction for inter-phase heat transfer in Euler-Lagrange point-particle simulation[J] . Journal of Computational Physics,2019,396:596 − 615. [17] MOJAVER P, JAFARMADAR S, KHALILARYA S, et al. Investigation and optimization of a Co-Generation plant integrated of gasifier, gas turbine and heat pipes using minimization of Gibbs free energy, Lagrange method and response surface methodology[J] . International Journal of Hydrogen Energy,2020,45(38):19027 − 19044. -
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