Virtual Welded - Joint Design Integrating Advanced Materials and Processing Technology

Technical Report · Thu Jun 30 04:00:00 EDT 2005

DOI:https://doi.org/10.2172/862362· OSTI ID:862362

Yang, Zhishang ^[1]; Ludewig, Howard W; Babu, S Suresh

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1. Caterpillar Inc.

Virtual Welede-Joint Design, a systematic modeling approach, has been developed in this project to predict the relationship of welding process, microstructure, properties, residual stress, and the ultimate weld fatique strength. This systematic modeling approach was applied in the welding of high strength steel. A special welding wire was developed in this project to introduce compressive residual stress at weld toe. The results from both modeling and experiments demonstrated that more than 10x fatique life improvement can be acheived in high strength steel welds by the combination of compressive residual stress from the special welding wire and the desired weld bead shape from a unique welding process. The results indicate a technology breakthrough in the design of lightweight and high fatique performance welded structures using high strength steels.

• Research Organization: Caterpillar Inc. P. O. Box 1875, Peoria, IL 61656-1875
• Sponsoring Organization: USDOE - Office of Energy Efficiency and Renewable Energy (EE); USDOE Office of Industrial Technologies (OIT) - (EE-20)
• DOE Contract Number: FC36-01ID14242
• OSTI ID: 862362
• Report Number(s): DOE/ID/14242-1
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
DESIGN
MICROSTRUCTURE
PERFORMANCE
PROCESSING
SHAPE
SIMULATION
STEELS
Virtual Welding
Systematic Modeling
High Strength Steels
Weld Fatique Strength
WELDING