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Three-Point Bending Crash Performance of Advanced High Strength Steels
Technical Paper
2009-01-0797
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Drop tower crash tests in a three-point bending configuration were carried out on spot welded box sections, adhesive bonded box sections, and laser welded cylindrical tubes made from a variety of advanced high strength steels. In the tests, a 147-kg indenter with a 28-cm diameter impacts the specimen at approximately 6 m/s, and the bending loads and energy absorption are determined. The results show that the maximum bending loads best correlate to the product of yield strength and thickness-squared, while the energy absorbed over 10-cm displacement best correlates to ultimate tensile strength times thickness-squared. As such, higher strength steels can be used to improve crash performance without increasing weight or to maintain crash performance with weight reduction. Other significant findings of the study are as follows. Bake hardening alone may improve bending crash performance slightly, while cold rolling and baking does not. Compared to the box section geometry, the cylindrical tubes have similar maximum bending loads and higher energy absorption at 10-cm displacement. Finally, purely adhesive bonding appears to be better suited for hot-dip galvanize (GI) than for hot-dip galvanneal (GA) coated sheet steels.
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Citation
Link, T. and Jensen, C., "Three-Point Bending Crash Performance of Advanced High Strength Steels," SAE Technical Paper 2009-01-0797, 2009, https://doi.org/10.4271/2009-01-0797.Also In
References
- Kawaguchi, H. “Various Sheet Applications for Automotive,” International Symposium on Niobium Microalloyed Sheet Steel for Automotive Applications, TMS 2006 45 52
- Belanger, P.J. Walp M.S. Milititsky, M. “Advanced Steel Products for Lightweighting at DaimlerChrysler,” International Symposium on Niobium Microalloyed Sheet Steel for Automotive Applications, TMS 2006 53 63
- Takahashi M. “Development of High Strength Steels for Automobiles,” July 2003 2 7
- Link T.M. Grimm, J.S. “Axial Crash Testing of Advanced High Strength Steel Tubes,” SAE Technical Paper No. 2005-01-0836
- Link, T.M. “Effects of Paint Baking on the Axial Crash Performance of Advanced High Strength Steels,” Materials Science & Technology Conference 2008
- Ohkubo, Y. Akamatsu T. Shirasawa, K. “Mean Crushing Strength of Closed-Hat Section Members,” SAE Technical Paper No. 740040
- Cornette, D. Hourman, T. Hudin, O. Laurent J.P. Reynaert, A. “High Strength Steels for Automotive Safety Parts,” SAE Technical Paper No. 2001-01-0078
- Neumann, P. “Comparison of the Light-Weight Potential of Different Materials Used Under Bending Loads,” Steel Research 69 Nos. 4 and 5 April/May 1998
- State of the Art Review of Automobile Structural Crashworthiness American Iron and Steel Institute June 1992 39 45