基于SYSWELD的CTB&SBB真空壳体的焊接仿真分析  

Welding Simulation Analysis on CTB&SBB Vacuum Shell Based on SYSWELD

作　　者：王开松[1] 朱瑞[1] 刘素梅[2] 宋云涛[2] 

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001 [2]中国科学院等离子体物理研究所,安徽合肥230031

出　　处：《热加工工艺》2013年第13期183-185,188,共4页Hot Working Technology

基　　金：国家973计划项目(2008CB717900);ITER计划专项支持项目(2008GB102000)

摘　　要：国际热核实验反应堆ITER计划是研究可控核聚变的一个大型国际研究合作项目。线圈终端盒(CTB)和S弯盒(SBB)是保证ITER装置可靠运行的关键部件之一,作用是为磁体系统与其他系统相联接提供接口和屏蔽保护。其外壳则要为CTB和SBB的内部部件提供真空环境。因此壳体的焊接品质直接影响着装置的安全稳定运行。本文利用双椭球热源模型,采用有限元分析软件SYSWELD,对CTB&SBB外壳原型件的MIG焊接工艺进行了仿真数值模拟,得到其变形及残余应力值。分析结果表明,此MIG焊接工艺适合CTB&SBB真空壳体的焊接。International thermonuclear experimental reactor （ITER） plan is the study of controlled nuclear fusion in a large international research cooperation projects. Coil terminal box （CTB） and S-bend box （SBB） are the key components to ensure the reliable operation of ITER, and their fimction is to provide the interface and the shielding protection for the magnet system connected to other system smoothly. The shell of CTB＆SBB is to provide a vacuum environment for the internal components. Therefore , the welding quality of the shell affects the security and stability of the running device directly. The numerical simulation for MIG welding process of CTB＆SBB prototype shell is fulfilled by double-ellipsoid heat source modeling based on the finite element analysis sottware SYSWELD ,then, the welding deformation and residual stress is obtained. The results show that the MIG process is adapted to the vacuum shell welding.

关 键 词：国际热核实验反应堆 热源模型 有限元分析 数值模拟 

分 类 号：TH123.4[机械工程—机械设计及理论] TG404[金属学及工艺—焊接]