CP3薄壁焊管数控弯曲成形有限元分析  

FE Analysis of NC Bending of Thin-Walled CP3 Welded Tubes

作　　者：李毅[1] 詹梅[1] 王建光[1] 任宁[1] 杨合[1] 

机构地区：[1]西北工业大学材料学院

出　　处：《航空制造技术》2011年第16期86-89,93,共5页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金项目(50875216)资助

摘　　要：根据焊接管材的特点,通过母材试样和包含焊缝及焊缝热影响区的混合试样的单向拉伸试验以及混合试样横截面的显微硬度测试,基于拉伸过程的等应变假设和混合法则,得到了CP3焊管母材、焊缝以及焊缝热影响区的材料拉伸应力应变关系。进而建立了薄壁CP3钛管数控弯曲有限元模型,分析了弯曲参数对焊管弯曲结果的影响,比较了均质管模型和焊管模型下,3个弯曲横截面上的壁厚分布,得到了焊缝对焊管弯曲的影响规律。According to features of CP3 welded tubes,the tensile tests for parent metal and mixed metal including weld beam and heat-affected zone (HAZ) metal were carried out,and cross-sectional sample of mixed metal are used for measuring microhardness throughout weld zone and HAZ.Then on the basis of the iso-strain assumption and mixture laws,stress-strain relationships of parent metal,weld beam metal and heat-affected zone metal were obtained.Moreover,FE models for NC bending of welded tubes were established.Finally,laws of parameters on the bending of welded tubes were analyzed,and wall thickness distributions of three cross sections of deformed welded and seamless tubes were compared,then effects of weld beam on bending process of welded tubes were obtained.

关 键 词：CP3薄壁焊管 弯曲成形 有限元分析 

分 类 号：TG457.6[金属学及工艺—焊接]