HFW焊管排辊成型焊接过程的有限元模拟  被引量:5

Finite Element Simulation for Welding Process in HFW Cage Roll-forming

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作  者:胡盛德[1] 杨君[1] 马文超[1] 王龙[1] 张涛[1] 

机构地区:[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,材料与冶金学院,湖北武汉430081

出  处:《热加工工艺》2016年第3期213-216,共4页Hot Working Technology

基  金:钢铁冶金及资源利用省部共建教育部重点实验室开放基金项目(FMRU200903)

摘  要:在HFW焊管的成型过程中,焊接质量直接影响着最后成品钢管的质量好坏,要得到质量好的钢管,消除因高频焊接产生的热应力是一项很重要的工序。故在生产前,利用ANSYS建立HFW焊管的焊接后热应力的三维有限元模型具有指导意义。利用ANSYS参数化语言APDL,建立HFW焊管的有限元模型,添加热源和边界条件,综合考虑焊管材料的热物性,并利用生死单元技术和循环语句实现热源的移动,从而获得HFW焊管在焊接过程中的温度场和应力场分布并对其进行分析,对应力场分析发现焊缝处的应力较小,而焊缝处过热区的应力较大。In the production process of high frequency welded pipe, the final quality of pipe was determined by the quality of welding, so the elimination of the thermal stress caused by high frequency welding was an important working operation. Therefore, to establish the three dimensional finite element model of thermal stress had guiding significance before production in ANSYS. Making use of APDL language embedded in ANSYS, a finite element model of high frequency welded pipe was established. Then, the heat source, boundary conditions and thermal physical property of the material were added to the model. Moreover, to get the distribution of the temperature field and stress field of HFW pipe, the DO-loop and element birth and death technology were also applied to load welding heat source. Through the analysis of results, the stress field of the overheated zone is bigger than that of the weld zone.

关 键 词:HFW焊管 温度场 热应力 ANSYS 生死单元法 

分 类 号:TG457.6[金属学及工艺—焊接]

 

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