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A Study of Crash Energy and Severity in Frontal Vehicle-To-Vehicle Crash Tests
Technical Paper
2011-01-0541
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This work presents a study of crash energy and severity in frontal offset Vehicle-To-Vehicle (VTV) crash tests. The crash energy is analyzed based on analytical formulations and empirical data. Also, the crash severity of different VTV tests is analyzed and compared with the corresponding full frontal rigid barrier test data.
In this investigation, the Barrier Equivalent Velocity (BEV) concept is used to calculate the initial impact velocity of frontal offset VTV test modes such that the offset VTV tests are equivalent to full frontal impact tests in terms of crash severity. Linear spring-mass model and collinear impact assumptions are used to develop the mathematical formulation. A scale factor is introduced to account for these assumptions and the calculated initial velocity is adjusted by this scale factor.
It is demonstrated that the energies due to lateral and rotational velocity components are very small in the analyzed frontal VTV tests. Hence, it is concluded that a scale factor is not needed to account for the missing lateral and rotational energy terms (computed from lateral and rotational velocity components), but this factor is required to account for the linear stiffness assumption made in the derivation of the formula.
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Citation
Ghannam, M., Clark, T., Reddy, Y., and Lee, J., "A Study of Crash Energy and Severity in Frontal Vehicle-To-Vehicle Crash Tests," SAE Technical Paper 2011-01-0541, 2011, https://doi.org/10.4271/2011-01-0541.Also In
Safety Test Methodology and Structural Crashworthiness and Occupant Safety, 2011
Number: SP-2304; Published: 2011-04-12
Number: SP-2304; Published: 2011-04-12
References
- Chan, C.-Y. “Fundamentals of Crash Sensing in Automotive Air Bag Systems,” SAE International Warrendale, PA 978-0-7680-0499-1 2000 10.4271/R-217
- NHTSA, National Highway Traffic Safety http://www.nhtsa.dot.gov
- IIHS, Insurance Institute for Highway Safety http://www.iihs.org
- Huang, M. “Vehicle Crash Mechanics,” SAE International Warrendale, PA 978-0-7680-0906-4 2002
- Wood, D. “Consideration of the Elastic Compressive Properties of Cars in Frontal Impact,” SAE Technical Paper 1999-01-0095 1999 10.4271/1999-01-0095
- Carpenter, N. J. Welcher, J. B. “Stiffness and Crush Energy Analysis for Vehicle Collision and its Relationship to Barrier Equivalent Velocity (BEV),” SAE Technical Paper 2001-01-0500 2001 10.4271/2001-01-0500
- Rose, N.A. Fenton, S.J. Ziernicki, R.M. “An Examination of the CRASH3 Effective Mass Concept,” SAE Technical Paper 2004-01-1181 2004 10.4271/2004-01-1181