[1]谭 龙,张从平,张建勋.焊接转子窄间隙焊接接头冲击韧性数值研究[J].焊管,2013,36(9):5-10.[doi:1001-3938(2013)09-0005-06]
 TAN Long,ZHANG Congping,ZHANG Jianxun.Numerical Simulation Study on Welded Joints Impact Toughnessfor Welded Rotor Narrow Gap[J].,2013,36(9):5-10.[doi:1001-3938(2013)09-0005-06]
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焊接转子窄间隙焊接接头冲击韧性数值研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
36
期数:
2013年第9期
页码:
5-10
栏目:
试验与研究
出版日期:
2013-09-28

文章信息/Info

Title:
Numerical Simulation Study on Welded Joints Impact Toughness
for Welded Rotor Narrow Gap
文章编号:
1001-3938(2013)09-0005-06
作者:
谭 龙1张从平2张建勋1
(1. 西安交通大学 金属材料强度国家重点实验室,西安 710049;
2. 东方汽轮机有限公司,四川 德阳 618000)
Author(s):
TAN Long1ZHANG Congping2 ZHANG Jianxun1
(1. State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University , Xi’an 710049, China;
 2. Dongfang Turbine Co., Ltd., Deyang 618000, Sichuan, China)
关键词:
焊接焊接转子焊接接头冲击韧性微区性能有限元
Keywords:
Welding welded rotor welded joint impact toughness micro-region performance finite element
分类号:
TG115.57
DOI:
1001-3938(2013)09-0005-06
文献标志码:
A
摘要:
采用微压剪方法测试了1 000 MW核电汽轮机焊接转子焊接接头的剪切强度,并由均质母材拟合确定了剪切强度与屈服强度间的关系,反推得到整个焊接接头微区屈服强度,利用有限元法LS-DYNA显式动力学分析软件,对焊接接头动态冲击过程进行了数值模拟。分别计算了缺口位于焊缝中心、距焊缝中心2 mm,4 mm,6 mm,8 mm,10 mm及热影响区时冲击过程中的吸收功,分析了冲击韧性的变化及焊接接头力学不均匀性对冲击韧性的影响。
Abstract:
The shearing strength of welded rotor welded joint for 1 000 MW nuclear turbine by the micro compression-shear method, the relationship between shearing strength and yield strength was determined by the homogeneous parent metal fitting, so the micro-region yield strength of the whole welded joint was obtained. The numerical simulation of dynamic impact procedure of welded joint was carried out by using finite element dynamic analysis software LS-DYNA. The absorbed energies which groove located in weld centre, 2,4,6,8,10mm from weld centre line and HAZ. It also analyzed the change of impact touthness, and the influence of uneven mechanical property in welded joint to impact toughness.

参考文献/References:

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备注/Memo

备注/Memo:
谭龙(1987—),男,博士研究生,主要研究方向为核电汽轮机低压焊接转子微区断裂行为研究与寿命分析。
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