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A Fatigue Crack Growth Model for Spot Welds in Square-Cup and Lap-Shear Specimens under Cyclic Loading Conditions
Technical Paper
2007-01-1373
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A fatigue crack growth model is adopted in this paper to investigate the fatigue lives of resistance spot welds in square-cup and lap-shear specimens of dual phase, low carbon and high strength steels under cyclic loading conditions. The fatigue crack growth model is based on the global stress intensity factor solutions for main cracks, the local stress intensity factor solutions for kinked cracks as functions of the kink length, the experimentally determined kink angles, and the Paris law for kinked crack propagation. The predicted fatigue lives based on the fatigue crack growth model are then compared with the experimental data. The results indicate that the fatigue life predictions based on the fatigue crack growth model are in agreement with or lower than the experimental results.
Authors
Citation
Sripichai, K., Lin, P., and Pan, J., "A Fatigue Crack Growth Model for Spot Welds in Square-Cup and Lap-Shear Specimens under Cyclic Loading Conditions," SAE Technical Paper 2007-01-1373, 2007, https://doi.org/10.4271/2007-01-1373.Also In
References
- Pook, L. P. 1975 Fracture mechanics analysis of the fatigue behaviour of spot welds International Journal of Fracture 11 173 176
- Pook, L. P. 1979 Approximate stress intensity factors obtained from simple plate bending theory Engineering Fracture Mechanics 12 505 522
- Zhang, S. 1997 Stress intensities at spot welds International Journal of Fracture 88 167 185
- Zhang, S. 1999 Approximate stress intensity factors and notch stresses for common spot-welded specimens Welding Research Supplement 173 179
- Pan, N. Sheppard, S. D. 2003 Stress intensity factors in spot welds Engineering Fracture Mechanics 70 671 684
- Wang, D.-A. Lin, S.-H. Pan, J. 2005 Stress intensity factors for spot welds and associated kinked cracks in cup specimens International Journal of Fatigue 27 581 598
- Wang, D.-A. Lin, P.-C. Pan, J. 2005 Geometric functions of stress intensity factor solutions for spot welds in lap-shear specimens International Journal of Solids and Structures 42 6299 6318
- Lin, P.-C. Wang, D.-A. Pan, J. Mode I stress intensity factor solutions for spot welds in lap-shear specimens International Journal of Solids and Structures
- Lin, P.-C. Pan, J.
- Newman, J. A. Dowling, N. E. 1998 A crack growth approach to life prediction of spot-welded lap joints Fatigue and Fracture of Engineering Materials and Structures 21 1123 1132
- Lin, S.-H. Pan, J. Wung, P. Chiang, J. 2006 A fatigue crack growth model for spot welds under cyclic loading conditions International Journal of Fatigue 28 792 803
- Wang, D.-A. Pan, J. 2005 A computational study of local stress intensity factor solutions for kinked cracks near spot welds in lap-shear specimens International Journal of Solids and Structures 42 6277 6298
- Bilby, B. A. Cardew, G. E. Horward, I.C. 1978 Stress intensity factors at the tip of kinked and forked cracks The fourth international conference on fracture University of Waterloo Ontario June 19-24 1977 Pergamon Press New York, NY 197 200
- Cotterell, B. Rice, J. R. 1980 Slightly curved or kinked cracks International Journal of Fracture 16 2 155 169
- Lin, S.-H. Pan, J. 2004 Fatigue life prediction for spot welds in coach-peel and lap-shear specimens with consideration of kinked crack behaviour International Journal of Materials and Production Technology 20 1-3 31 50
- Zhang, J. Dong, P. Gao, Y. 2001 Evaluation of stress intensity factor-based predictive technique for fatigue life of resistance spot welds SAE technical paper no. 2001-01-0830 Society of automotive engineers Warrendale, PA
- Gao, Y. Chucas, D. Lewis, C. McGregor, I. J. 2001 Review of CAE fatigue analysis techniques for spot-welded high strength steel automotive structures SAE technical paper no. 2001-01-0835 Society of automotive engineers Warrendale, PA
- Swellam, M. H. Kurath, P. Lawrence, F. V. 1992 Electric-Potential-Drop Studies of Fatigue Crack Development in Tensile-Shear Spot Welds Advances in Fatigue Lifetime Predictive Techniques, ASTM STP 1122 Mitchell, M. R. Landgraf, R. W. American Society for Testing and Materials 383 401