Numerical simulation on stress field of subsection welding of 2219 aluminum alloy flat

被引：0

作者：

Liu, XS ^{[1
]}

Ji, SD ^{[1
]}

Fang, HY ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding Technol Prod, Harbin 150001, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2005年 / 15卷

关键词：

subsection welding; welding sequence; residual stress; numerical simulation;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Numerical simulation of 2219 aluminum alloy flat under the condition of subsection welding or no subsection welding was analyzed by the double ellipsoidal heat source model. The result shows that the residual tensile stress of subsection welding appears in the weld and nearby areas while the peak value appears in the weld. The subsection welding can greatly increase the low stress area in the weld. Moreover, the contrast of stress between the subsection welding and no subsection welding shows that if the welding sequence, namely that the double ends of the weld are welded first and then the middle part is welded, is adopted in the Subsection welding, the peak value of residual tensile stress can be greatly decreased.

引用

页码：39 / 42

页数：4

共 15 条

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