This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
New Materials Technology for Achieving Both Crashworthiness and Weight Reduction Using Energy-Absorbing Steel with Higher Strain-Rate Sensitivity
Annotation ability available
Sector:
Language:
English
Abstract
This paper presents a new material technology that can achieve both crashworthiness and weight reduction of the vehicle body. This new technology is based on three fundamental approaches. One is a technique for evaluating high-speed material deformation characteristics related to the crush behavior of energy-absorbing structures. A second is the material concept of high tensile steel featuring both increased material strength and higher strain-rate sensitivity in order to improve its energy-absorbing capacity. We have found 590N/mm2-class dual-phase (DP) steel consistent with this concept. The third is a technique for estimating the crush behavior of body structures, taking into account the plate thickness reduction and work hardening distribution resulting from the press-forming process. Finally, it was shown that the use of DP steel results in a 15% reduction in the weight of absorbing structures without affecting crashworthiness.
Recommended Content
Authors
Citation
Nakanishi, E., Tateno, H., Hishida, Y., and Shibata, K., "New Materials Technology for Achieving Both Crashworthiness and Weight Reduction Using Energy-Absorbing Steel with Higher Strain-Rate Sensitivity," SAE Technical Paper 980953, 1998, https://doi.org/10.4271/980953.Also In
Steel Sheet and Steel Bar Products and Processing for Automotive Applications
Number: SP-1349; Published: 1998-02-13
Number: SP-1349; Published: 1998-02-13
References
- Kawata K. Hashimoto S. et al. Proc. Conf. Mechanical Properties at High Rates of Strain 1979 1979 Inst.of Phys. Bristol and London 71
- Nakanishi E. Tateno H. Shibata K. Proc. Conf. Manufacturing Milestones toward the 21st Century 1997 JSME 329
- Kawata K. Hashimoto S. et al. Macro-and Micro-Mechanics of High Velocity Deformation and Fracture Kawata K. Shipiri J. Springer-Verlag Berlin 1987 1 25
- Nakanishi E. et al. Structural Failure, Product Liability and Technical Insurance 1992 Elsevier 423