数控弯曲下TA18高强钛管回弹对壁厚减薄和截面畸变的影响  

Effect of Springback on Wall Thinning and Section Distortion for High Strength TA18 Tube in NC Bending

作　　者：王艳[1] 杨合[1] 李恒[1] 詹梅[1] 宋飞飞[1] 李光俊[2] 许旭东[2] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072 [2]成都飞机工业(集团)有限公司,四川成都610092

出　　处：《稀有金属材料与工程》2012年第7期1221-1225,共5页Rare Metal Materials and Engineering

基　　金：凝固技术国家重点实验室自主研究课题(0400-N8QT0219);材料成形与模具技术国家重点实验室开放课题研究基金(09-10);西北工业大学基础研究基金(JC201028)

摘　　要：通过ABAQUS有限元显/隐式方法模拟研究了不同芯棒和压块参数下回弹对TA18高强钛管壁厚减薄及截面畸变的影响。结果表明:在不同的工艺参数下TA18高强钛管卸载回弹后,壁厚减薄率与回弹前的相对差均小于10%;但截面畸变率与回弹前的相对差除极个别测量点外,均大于35%,甚至超过60%,且回弹后截面畸变率稳定变形区的"平台"现象消失。The influence of the springback in high strength TAI 8 tubes on the wall thinning and section distortion under different process parameters was investigated using ABAQUS Explicit/Standard finite element models. The results show that the wall thinning ratios after unloading-springback are less than 10% under different process parameters for high strength TA18 tubes, while the section distortion ratios after springback are more than 35%, even 60% except a few measured points. The ＂platform＂ of section distortion ratio at stable forming zone disappears after springback.

关 键 词：回弹 TA18高强钛管 数控弯曲 壁厚减薄 截面畸变 

分 类 号：TG386.31[金属学及工艺—金属压力加工]