中国机械工程Issue(3)：379-384,6.DOI:10.3969/j.issn.1004132X.2015.03.016
21-6-9高强不锈钢管数控弯曲回弹的理论计算及有限元分析
Theoretical Calculation and FE Analysis of Springback for 21-6-9 High Strength Stainless Steel Tube during NC Bending
摘要
Abstract
In order to study the effects of geometric parameters and material parameters on spring-back of bent tube,the formulas of the final bending radius and springback angle were derived using the elastic plastic theory,then combined with theoretical and FE analysis,the effects of geometric pa-rameters and material parameters on springback law of 21-6-9 high strength stainless steel tube during NC bending were analyzed,then the theoretical analysis,FE simulation and experimental results were compared.The results show that the final bending radius increases with the increase of bending radi-us,strength coefficient,or the decrease of elastic modulus and hardening exponent,and it is inde-pendent of bending angle.The springback angle increases with the increase of bending angle,relative bending radius,strength coefficient or the decrease of elastic modulus,hardening exponent.The sim-ulation results and experimental ones agree with each other well,which can predict springback more accurately.Comparing theoretical analysis with experimental results,the error is bigger,but it can reflect the change trend of springback angle.关键词
21-6-9 高强不锈钢管/数控弯曲/回弹/理论解析/有限元分析Key words
21-6-9 high strength stainless steel tube/NC bending/springback/theoretical analy-sis/FE analysis分类
矿业与冶金引用本文复制引用
方军,鲁世强,王克鲁,许小妹,徐建美,姚正军..21-6-9高强不锈钢管数控弯曲回弹的理论计算及有限元分析[J].中国机械工程,2015,(3):379-384,6.基金项目
国家自然科学基金资助项目(51164030) （51164030）
