大型储罐用12MnNiVR钢窗口拘束焊接对残余应力影响的数值模拟  

Numerical simulation about the influence of rectangular window restriction welding of12MnNiVR steel on residual stress for large storage tank

作　　者：曾仲[1] 赵建平[1] 

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816

出　　处：《电焊机》2015年第12期72-77,87,共7页Electric Welding Machine

基　　金：国家科技支撑计划资助项目(2011BAK06B03);江苏省六大高峰人才计划资助项目;江苏省2013年度普通高校专业学位研究生实践创新计划(CXLX13-412)

摘　　要：利用有限元软件ABAQUS生死单元技术对12MnNiVR钢矩形窗口拘束的焊接试验进行热力耦合焊接模拟,分析在不同的拘束度下对矩形窗口的焊缝及热影响区残余应力的峰值及分布影响,以及矩形窗口在相同的拘束度和焊接参数的情况下,不同坡口对焊接的焊缝及热影响区残余应力的峰值及分布影响。A thermal-force coupling welding simulation of rectangular window restriction welding for 12MnNiVR steel to calculate the residual stress is built by using the birth-and-death element technology of finite element software ABAQUS.In this paper, the peak value and distribution of welding residual stress in welds and HAZ in different restraint intensities are analyzed.And with the same restraint intensity and welding parameters ,the peak value and distribution of welding residual stress in welds and HAZ in different grooves are also discussed.

关 键 词：拘束度 矩形窗口 12MnNiVR ABAQUS 残余应力 

分 类 号：TG457.11[金属学及工艺—焊接]