南京航空航天大学学报（英文版）2025，Vol.42Issue(3)：287-296,10.DOI:10.16356/j.1005-1120.2025.03.002
基于裂纹柔度法的6061-T651铝合金板材残余应力分布研究及其对加工变形的影响
Investigation of Residual Stress Distribution and Its Influence on Machining Deformation in 6061-T651 Aluminum Alloy Plates Using Crack Compliance Method
摘要
Abstract
To investigate the residual stress distribution and its influence on machining deformation in 6061-T651 aluminum alloy plates,this paper uses the crack compliance method to study the residual stress characteristics of 6061-T651 aluminum alloy plates with a thickness of 75 mm produced by two domestic manufacturers in China.The results indicate that both types of plates exhibit highly consistent and symmetrical M-shaped residual stress profile along the thickness direction,manifested as surface layer compression and core tension.The strain energy density across all specimens ranges from 1.27 kJ/m³ to 1.43 kJ/m³.Machining deformation simulations of an aerospace component incorporating these measured stresses showed minimal final deformation difference between the material sources,with a maximum deviation of only 0.009 mm across specimens.These findings provide critical data for material selection and deformation control in aerospace manufacturing.关键词
残余应力/铝合金预拉伸板/裂纹柔度法/整体结构件/加工变形Key words
residual stress/aluminum alloy pre-stretched plate/crack compliance method/integrated structural components/machining deformation分类
航空航天引用本文复制引用
何文博,樊龙欣,袁维东,杨吟飞,徐九华..基于裂纹柔度法的6061-T651铝合金板材残余应力分布研究及其对加工变形的影响[J].南京航空航天大学学报（英文版）,2025,42(3):287-296,10.基金项目
This work was supported in part by the National Natural Science Foundation of China(Nos.61201048,61107063),and the National Science and Tech-nology Major Project(No.2017-Ⅵ-001-0094). （Nos.61201048,61107063）
