航空材料学报2026，Vol.46Issue(1)：41-50,10.DOI:10.11868/j.issn.1005-5053.2025.000172
钛合金栅格薄壁结构电弧熔丝增材制造路径规划与应力控制
Deposition path planning and stress control for gridding thin-walled titanium alloy parts fabricated by wire-arc additive manufacturing
摘要
Abstract
Wire-arc additive manufacturing(WAMM)is an emerging manufacturing technology that employs metal wire as the raw material and arc as the heat source.It offers advantages in fabricating large and complex parts.Nevertheless,it still faces challenges,including prolonged fabrication cycles,intricate path planning,and substantial residual stress.In this study,we explore the optimization of the manufacturing path for wire-arc additive manufacturing when fabricating complex structural components,aiming to mitigate the significant residual stress and strain induced by suboptimal manufacturing paths.Finite element software is utilized to optimize the manufacturing path,and a unit body of a grid component with excellent forming quality has been successfully produced using the optimized path.Through finite element analysis,it can be revealed that for the unoptimized path,the equivalent residual stress at the thin-wall after cooling reaches 361 MPa,while that at the nodes after cooling is 666 MPa.In contrast,for the optimized path,the equivalent residual stress at the thin-wall after cooling is 206 MPa,and the equivalent residual stresses at two nodes after cooling are 260 MPa and 427 MPa,respectively.Compared to the unoptimized path,the optimized path leads to a 61%reduction in residual stress at the nodes and a 43%decrease in stress at the thin-wall.Moreover,the difference in residual stress between the nodes and the thin-wall is smaller than that of the unoptimized path,resulting in less deformation and fewer defects caused by residual stress.The grid component unit body fabricated using the optimized path exhibits well-combined melt tracks and superior forming quality,with no discernible residual stress deformation.This effectively validates the feasibility of the optimized path in controlling residual stress during the wire-arc additive manufacturing of grid components.关键词
电弧熔丝增材制造/钛合金构件/有限元分析/路径规划Key words
wire arc additive manufacturing/titanium alloy part/finite element analysis/path planning分类
航空航天引用本文复制引用
郑元翾,彭司弋,王协彬,郭跃岭,吕忠利,刘长猛..钛合金栅格薄壁结构电弧熔丝增材制造路径规划与应力控制[J].航空材料学报,2026,46(1):41-50,10.基金项目
国家重点研发计划科技型中小企业项目(2024YFB4610300) （2024YFB4610300）
