计量学报2024，Vol.45Issue(7)：1007-1014,8.DOI:10.3969/j.issn.1000-1158.2024.07.10
一种利用自适应发射率模型补偿搅拌摩擦焊温度场的方法
A Method for Compensating the Temperature Field of Friction Stir Welding by Using Adaptive Emissivity
摘要
Abstract
Aiming at the problem that most of the current research on the temperature field of friction stir welding ignores the effect of thermal radiation or adopts the fixed emissivity model,which leads to large errors,an adaptive emissivity model considering the growth process of aluminum alloy oxide film on rough surface is proposed to compensate the welding temperature field.Firstly,considering the dynamic change of the surface morphology of aluminum alloy during friction stir welding,the quadratic surface response method was used to determine the welding surface roughness and the number of intersections with the average unit length of the average line.Subsequently,a fully coupled finite element model of 6061 aluminum alloy friction stir welding process was established based on the proposed adaptive emissivity,and the simulation results were analyzed.The results show that the maximum absolute error between the results obtained under different welding conditions and the experimental results is only 11 K,which indicates that the numerical model with adaptive emissivity can well reproduce the temperature field in the welding process.关键词
温度计量/焊接温场/动态预测/温场补偿/自适应发射率/搅拌摩擦焊/铝合金氧化膜Key words
temperature measurement/temperature field of welding/dynamic prediction/compensate temperature field/adaptive emissivity/friction stir welding/aluminum alloy oxide film分类
通用工业技术引用本文复制引用
张玉存,徐子奇,李群..一种利用自适应发射率模型补偿搅拌摩擦焊温度场的方法[J].计量学报,2024,45(7):1007-1014,8.基金项目
河北省自然科学基金(E2022415005,E2021415003) （E2022415005,E2021415003）
中央引导地方科技发展资金项目(216Z1801G,226Z1806G) （216Z1801G,226Z1806G）
河北省'三三三人才工程'资助项目(A202101025) （A202101025）
