摘要
在高频焊管生产过程中,消除因高频焊接造成的焊管残余应力是一项重要的工序,预先得出焊管残余应力场对于消除焊管残余应力具有指导意义.利用ANSYS参数化语言APDL,建立高频焊管的有限元模型,采用高频焊接线热源模型进行计算,同时考虑高频焊管有限元模型的热边界条件及物理结构约束,从而获得高频焊管在焊接过程中三维应力场及位移场.通过对有限元模拟结果的分析,可以从理论上得出焊管在进行消除残余应力工序前的应力和位移分布.
In the production process of high-frequency welded pipe,the elimination of the high-frequency welding residual stresses caused by high-frequency welding is an important working operation.A knowledge of the residual stress of the welded pipe in advance of welding is significant for the residual stress elimination.Making use of APDL language embedded in ANSYS,a finite element model of high-frequency welded pipe was established.Then the linear thermal source model was used to conduct the computation.Meantime,the thermal boundary conditions and the physical structure of the constraints of this finite element model were also taken into account,so that the three-dimensional stress field and displacement field could be obtained for the high-frequency pipe welding process.From the analysis of result of the finite element simulation,the stress field and displacement field of the welded pipe could be theoretically obtained in advance of the stress relief process.
出处
《兰州理工大学学报》
CAS
北大核心
2011年第3期16-19,共4页
Journal of Lanzhou University of Technology
基金
甘肃省自然科学基金(0809RJZA008)
金洲集团博士后工作站
兰州理工大学博士基金(BS052000907)的资助
关键词
高频焊管
ANSYS
焊接过程
应力场
high-frequency welded pipe
ANSYS
welding process
stress field
