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A Comparative Study of Composite and Steel Front Rails for Vehicle Front Impact Safety
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 23, 2005 by The Automotive Research Association of India in India
Annotation ability available
Event: International Mobility Engineering Congress & Exposition 2005 - SAE India Technology for Emerging Markets
Weight reduction is a primary concern in the design of today's automobiles. Fiber reinforced composites (FRC) comprise a category of materials that may offer advantages in terms of weight and cost when compared to both steel and aluminum. The viability of low cost FRCs such as a glass fiber reinforced plastic (GFRP) as a structural material for automotive applications can, however, be diminished by functional requirements such as energy absorption and crush under impact loading. In this context, the crash safety performance of front rails of a compact passenger car is evaluated by assuming these to be made of GFRPs with constant strand mat (CSM) plies. The safety assessment of rails is carried out with the aid of the explicit nonlinear finite element analysis code LS-DYNA with utmost attention being paid to the proper constitutive modeling of the composites considered. All analyses are carried out with an available damage-based material model in LS-DYNA which is suitable for representing laminated composites. The current study shows that further work is needed to make affordable composite-based structural components in production passenger cars a reality in terms of lower weight and impact safety.
CitationNaravane, A., Deb, A., Shivakumar, N., and Chittappa, H., "A Comparative Study of Composite and Steel Front Rails for Vehicle Front Impact Safety," SAE Technical Paper 2005-26-324, 2005, https://doi.org/10.4271/2005-26-324.
- Tabiei et al. “Non linear strain rate dependent micro-mechanical composite material model for finite element impact and crashworthiness simulation” Int J Non-linear Mech 40 2005 957 970
- Botkin et al. “Crashworthiness simulation of composite automotive structures” 13th Annual Engg. Soc. of Detroit Advanced Composite Tech Conf. 1998
- Bisagni et al. “Progressive crushing of fiber-reinforced composite structural components of a formula one racing car” Comp Sruct 68 2005 491 503
- Anghileri et al. “An inverse approach to identify constitutive model parameters for crashworthiness modeling of composite structures” Comp Struct 68 2005 65 74
- Mamalis et al. “The static and dynamic axial crumbling of thin-walled fiberglass composite square tubes” Composites Part B 28B 1997 439 451
- LS-DYNA 960 Keyword User's Manual 2 Livermore Software Technology Corp. 2001