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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 Jand 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 Jand 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 Jand C*for the mismatched welded joint with HAZ crack.
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 Jand 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 Jand C * of the specimen is discussed for for the welded joints with HAZ crack. The results suggest that the HAZ property is a significant factor in the estimation of Jand C * for the mismatched welded joint with HAZ crack.