Related Experiment Video
Updated: Oct 25, 2025

Generating Lap Joints Via Friction Stir Spot Welding on DP780 Steel
Published on: August 13, 2019
Characterization of Mechanical Heterogeneity in Dissimilar Metal Welded Joints
He Xue1, Zheng Wang1, Shuai Wang1
1School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China.
Abstract:
Dissimilar metal welded joints (DMWJs) possess significant localized mechanical heterogeneity. Using finite element software ABAQUS with the User-defined Material (UMAT) subroutine, this study proposed a constitutive equation that may be used to express the heterogeneous mechanical properties of the heat-affected and fusion zones at the interfaces in DMWJs. By eliminating sudden stress changes at the material interfaces, the proposed approach provides a more realistic and accurate characterization of the mechanical heterogeneity in the local regions of DMWJs than existing methods. As such, the proposed approach enables the structural integrity of DMWJs to be analyzed in greater detail.
Related Concept Videos
Mechanical Characteristics of Steel
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
Residual Stresses
Bending of Members Made of Several Materials
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
Temperature Dependent Deformation
Biasing of Metal-Semiconductor Junctions
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
Stress-Strain Diagram - Ductile Materials

