工程科学学报2017，Vol.39Issue(4)：550-556,7.DOI:10.13374/j.issn2095-9389.2017.04.010
非线性组合硬化条件下镁合金板料变形回弹预测
Springback prediction of magnesium alloy sheet with nonlinear combined hardening
摘要
Abstract
Springback is regarded as one of the main defects that occur in sheet-metal forming processes.Therefore,improving its prediction accuracy,especially under highly nonlinear conditions,is important for researchers.In this paper,constitutive equations that consider the isotropic hardening,kinematic hardening,and distortional hardening are proposed for magnesium alloy sheet.The work hardening and springback behaviors of 0.8-mm-thick AZ31B magnesium alloy sheet were investigated and simulated.The AZ31B specimen was subjected to a bending process after the pre-tension deformation,which aided in the observation of its springback behavior under nonlinear loading paths.Simulations were conducted using ABAQUS-Explicit(Vumat)and ABAQUS-Implicit(Umat).Comparisons between the experimental and numerical results demonstrate the strong influence of the kinematic hardening on the springback prediction of magnesium alloy sheet.关键词
镁合金/回弹/包辛格效应/动态硬化/诱发各向异性Key words
magnesium alloy sheet/springback/Bauschinger effect/kinematic hardening/induced anisotropy分类
矿业与冶金引用本文复制引用
赵晓迪,岳振明,高军,褚兴荣..非线性组合硬化条件下镁合金板料变形回弹预测[J].工程科学学报,2017,39(4):550-556,7.基金项目
国家自然科学基金资助项目(51605257) （51605257）
