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Review of CAE Fatigue Analysis Techniques for Spot-Welded High Strength Steel Automotive Structures
Technical Paper
2001-01-0835
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
Durability assessment of automotive structures with resistance spot welds is an important part of automotive development. Down-gauging of vehicle body structures permitted by high strength steels brings added challenges to joint design. As a result, more accurate fatigue life analysis of joints is called for by automotive engineers, especially as part of the computer-aided engineering (CAE) evaluations in the early stage of model development.
This paper will review, evaluate and compare spot-weld fatigue assessment techniques suitable for use in the CAE environment. Particular attention is paid to the process of generating technique-specific spot-weld fatigue property curves. The focus is then switched to two of the most promising techniques, which are evaluated in detail. The validity of the two techniques and the associated fatigue data are then demonstrated on fatigue life predictions of simple and complex components. Practical issues related to the proper use of the techniques are discussed. Comments are made on the advantages and disadvantages of each technique. Finally, areas of improving the CAE durability tools for welded vehicle structures are proposed.
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Authors
Citation
Gao, Y., Chucas, D., Lewis, C., and McGregor, I., "Review of CAE Fatigue Analysis Techniques for Spot-Welded High Strength Steel Automotive Structures," SAE Technical Paper 2001-01-0835, 2001, https://doi.org/10.4271/2001-01-0835.Also In
References
- Lewis C. “Fatigue performance of fusion welded automotive high strength steels” Welding and Metal Fabrication July 1996
- Dong P. Sun X. Lu F. Zhang J. “A framework for modeling spot welds in finite element analysis of auto-body structures” SAE paper 1999-01-3191 IBEC'1999
- Brenner C.E. Unger B. Gaier C. Steinwender G. Eichiseder W. “Fatigue assessment of welding seams and spot joints based on FEA” SAE paper 2000-01-0780 2000 0148-7191
- Steinwender G. Gaier C. Dannbauer H. Unger B. Eichlseder W. “Fatigue prediction of jointed automotive structures” JSAE paper 20005327, 2000 JSAE Spring Convention Yokohama, Japan May 2000 0919-1364
- Rupp A. Störael K. Grubisic V. “Computer aided dimensioning of spot-welded automotive structures” SAE paper 950711 1995
- Kurath P. “Multiaxial fatigue criteria for spot welds” SAE paper 920668 1992
- Zhang S.C “Stress intensities at spot welds” International Journal of Fracture 88 167 185 1997
- Heyes P. Fermér M. “A spot-weld fatigue analysis module in the MSC/Fatigue environment”
- Radaj D. “Design and analysis of fatigue resistant welded structures” Abington Publishing 1990
- Nakahara Y. Takahashi M. Kawamoto A. Fujimoto M. Tomioka N. “Method of fatigue life estimation for spot-welded structures” SAE paper number 2000-01-0779 2000
- Wung P. Walsh T. Qurchan A. Stewart B. “the ignored failure model: spot weld under in-plane rotations (physical test)” SAE paper number 1999-01-3212
- Zhang J. Dong P. Gao Y. “Evaluation of stress intensity factor-based predictive technique for fatigue life of resistance spot welds” SAE paper number 2001-01-0830