汽车工程学报2025，Vol.15Issue(5)：687-698,12.DOI:10.3969/j.issn.2095-1469.2025.05.05
基于GISSMO韧性断裂准则的7003铝合金断裂失效行为研究
Study on Fracture and Failure Behavior of 7003 Aluminum Alloy Based on the GISSMO Ductile Fracture Criterion
摘要
Abstract
Bumper beams are widely used as safety structures in automobiles,high-speed trains,and other common transport vehicles because they effectively protect the vehicle structures during collisions.Accurately predicting the bumper-beam crash response first requires precise characterization of the beam material's mechanical properties.Therefore,this paper focuses on 7003 aluminum alloy,a material commonly used in bumper beams.Based on the GISSMO ductile-fracture criterion,it inversely calibrates the alloy's elastic-plastic constitutive model and failure model parameters.By comparing the finite element simulation and experimental results,it is verified that the optimized constitutive model predicts fracture behavior well.Finally,a quasi-static three-point bending test was conducted on a thin-walled tube.The structural deformation mode observed in the test matches the simulation closely,which confirms the accuracy of the constitutive model.关键词
防撞梁/7003铝合金/GISSMO韧性断裂准则/三点弯曲Key words
bumper beams/7003 aluminum alloy/GISSMO ductile fracture criterion/three point bending分类
机械制造引用本文复制引用
李志勇,谷先广,施永祥,俞陆新..基于GISSMO韧性断裂准则的7003铝合金断裂失效行为研究[J].汽车工程学报,2025,15(5):687-698,12.基金项目
安徽省科技重大专项(202203a05020029) （202203a05020029）
