This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Crash Behavior of Columns in Relation to Material Properties and Joining Techniques
Annotation ability available
Sector:
Language:
English
Abstract
The strain rate behavior of mild-steel and high-strength steel qualities has been investigated. The hardening as a function of the strain rate of a set of steel qualities was determined, and it was found that the gain in strength for high-strength steels is not in proportion to the static yield-strength. The absolute increase in strength for high-strength steel is often less than for mild steel (although this fact depends on the microstructure of the steel). This fact is reflected in the absorption of energy for square crash-columns that were tested on a sled-impact facility. Downgauging parts from mild-steel to high-strength steel must be therefore be done carefully to maintain its crashworthiness properties. Special attention should be given to the strain rate sensitivity of the next generation of high strength steel qualities. Moreover we have tested and simulated spotwelded columns to test the failure criterion for spotwelds. It appeared that using a failure criterion with standard tensile- and cross-tension forces for rupture of spot-welded specimens gives quite satisfactory results.
Recommended Content
| Technical Paper | New High Strength Steels Applied to the Body Structure of ULSAB-AVC |
| Technical Paper | HIGH-TEMPERATURE BRAZING APPLICATIONS |
| Technical Paper | Joining Dissimilar Materials by Magnetic Pulse Welding |
Authors
Citation
de Winter, L., Vreede, P., Paas, M., Bosma, F. et al., "Crash Behavior of Columns in Relation to Material Properties and Joining Techniques," SAE Technical Paper 982390, 1998, https://doi.org/10.4271/982390.Also In
References
- Vegter H. On the plastic behaviour of steel during sheet forming 1991 90-9004373-X
- Krabiell A. Dahl W. 52 1981 429 436
- Klepaczko J. Review of constitutive relations with strain rate and temperature for applications in structural dynamics Manual of crashworthiness engineering VII MIT 1990
- Hahn O. Gieske D. Klasfauseweh U. Rohde A. Fatigue resistance of spot welds under multiaxial loads International Institute of Welding, Annual Assembly Sept. 3-10 1994 Beijing, China