30CrMnSiNi2A管材补焊件疲劳失效行为模拟  

Simulation of Fatigue Failure Behavior of 30CrMnSiNi2A Pipe Weldment

作　　者：唐婷婷 李毅 张敏[1] 王森淼 马宏伟 易朗 TANG Tingting;LI Yi;ZHANG Min;WANG Senmiao;MA Hongwei;YI Lang(Xi'an University of Technology,School of Materials Science and Engineering,Xi'an 710048,China)

机构地区：[1]西安理工大学材料科学与工程学院,西安710048

出　　处：《焊管》2024年第2期95-101,共7页Welded Pipe and Tube

基　　金：陕西省重点研发计划项目“铜/钢双金属梯度复合结构件制备关键技术及过渡材料研究”(项目编号2023-YBGY-470)。

摘　　要：为了探究补焊次数对30CrMnSiNi2A管材焊接接头疲劳寿命的影响,运用有限元模拟软件Ansys Workbench以及疲劳分析软件Ansys nCodeDesign Life,基于焊接件实际形状尺寸建立管材补焊试件模型,并对其疲劳寿命进行了模拟计算。结果表明,补焊热影响区的力学性能随着补焊次数的增加而下降,疲劳寿命也随之降低;应力、应变集中主要出现在补焊热影响区,除第一次补焊外,其余补焊次数下的焊件疲劳失效起始位置均在补焊热影响区。In order to explore the influence of repair welding times on the fatigue life of welded joint of 30CrMnSiNi2A pipe,finite element simulation software ANSYS Workbench and fatigue analysis software ANSYS nCodeDesignLife were used to establish the repair welding specimen model based on the actual shape and size of the welded part,and the fatigue life of the specimen was simulated.The results show that the mechanical properties and fatigue life of the heat affected zone decrease with the increase of welding times.The stress and strain concentration mainly occurs in the heat affected zone of the repair welding,so the fatigue failure starting position of the weldment under other repair welding times is here except for the first repair welding.

关 键 词：30CRMNSINI2A 补焊 疲劳寿命 有限元模拟 

分 类 号：TG405[金属学及工艺—焊接]