Numerical Studies of Estimation of Fracture Parameters for Mismatched Welded Joints with HAZ Cracks

Kun LING,Zheng-dong WANG,Fu-zhen XUAN

钢铁研究学报(英文版) ›› 2015, Vol. 22 ›› Issue (9) : 846-851.

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钢铁研究学报(英文版) ›› 2015, Vol. 22 ›› Issue (9) : 846-851.
Material

Numerical Studies of Estimation of Fracture Parameters for Mismatched Welded Joints with HAZ Cracks

  • Kun LING,Zheng-dong WANG,Fu-zhen XUAN
作者信息 +

Numerical Studies of Estimation of Fracture Parameters for Mismatched Welded Joints with HAZ Cracks

  • Kun LING,Zheng-dong WANG,Fu-zhen XUAN
Author information +
文章历史 +

摘要

An idealized tri-material assumption is established to describe the constitutive relationship of mismatched welded joints by considering the influence of heat affected zone (HAZ). The fracture parameters J and C* are estimated for mismatched welded joints with HAZ cracks by finite element analysis with ABAQUS. A middle crack tension (M(T)) specimen is utilized in the analysis for different material properties and geometries of the weldment. The influence of mechanical property and geometry on the fracture parameters J and C* of the specimen is discussed for the welded joints with HAZ crack. The results suggest that the HAZ property is a significant factor in the estimation of J and C* for the mismatched welded joint with HAZ crack.

Abstract

An idealized tri-material assumption is established to describe the constitutive relationship of mismatched welded joints by considering the influence of heat affected zone (HAZ). The fracture parameters J and C* are estimated for mismatched welded joints with HAZ cracks by finite element analysis with ABAQUS. A middle crack tension (M(T)) specimen is utilized in the analysis for different material properties and geometries of the weldment. The influence of mechanical property and geometry on the fracture parameters J and C* of the specimen is discussed for the welded joints with HAZ crack. The results suggest that the HAZ property is a significant factor in the estimation of J and C* for the mismatched welded joint with HAZ crack.

关键词

Mismatched welded joint, Tri-material assumption,Heat affected zone , J-integral, C* parameter

Key words

Mismatched welded joint, Tri-material assumption,Heat affected zone , J-integral, C* parameter

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导出引用
Kun LING, Zheng-dong WANG. Numerical Studies of Estimation of Fracture Parameters for Mismatched Welded Joints with HAZ Cracks[J]. 钢铁研究学报(英文版), 2015, 22(9): 846-851
KUN LING, ZHENG-DONG -WANG. Numerical Studies of Estimation of Fracture Parameters for Mismatched Welded Joints with HAZ Cracks[J]. Journal of Iron and Steel Research International, 2015, 22(9): 846-851

参考文献

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基金

the National High Technology Research and Development Program of China

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