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Designing for Offset Crash: A Trade-Off in Constraints
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Abstract
This paper discusses the challenges, a crash engineer is faced with, when designing for offset crash and the more severe intrusion constraints to be satisfied in offset crash when compared with full frontal crash. Excessive intrusion and higher risk of injuries are some of the tougher constraints to be satisfied when designing for offset crash. Structural reinforcement has been used to control intrusion in a soft offset impact without raising any concern of exceeding passenger compartment pulse requirement. However, the same reinforcement can stiffen the structure, limit the crash distance, and possibly exceed the desired occupant G-values when designing for full frontal crash. These constraints make it more challenging to seek an optimal design that maximizes the energy absorbing capability of the crash zones, minimizes intrusion, and keeps occupant G-values within desired limits.
Results of a computer model for a front end structure under 40% offset crash are presented. The discussion of these results along with conclusions and recommendations for offset crash design are included.
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Mahmood, H., Baccouche, M., and Bakkar, J., "Designing for Offset Crash: A Trade-Off in Constraints," SAE Technical Paper 951075, 1995, https://doi.org/10.4271/951075.Also In
References
- Calso, S.M. Saha, N.K. Faruque, M.O. Balabhadra, K.S. 1993 “Simulation of Offset and In-Line Car to Car Rear Impacts,” ASME Crashworthiness and Occupant Protection in transportation Systems New Orleans, Louisiana
- Friedman, D. Friedman, K. 1993 “Frontal Offset and Angled Impact Passive Protection,” SAE SP-947 Frontal Impact Protection
- Saha, N.K. Wang, H.C. El-Achkar, R.E. 1992 “Frontal Offset Pole Impact Simulation of Automotive Vehicles,” ASME International Computers in Engineering Conference San Francisco
- Frank, T. Gruber, K. 1992 “Numerical Simulation of Frontal Impact and Offset Collisions,” CRAY Channels Cray Research Inc.
- Scheunert, D. Justen, R. Herrmann, R. Zeidler, F. Decker, J. Kallina, I. “What is a Realistic Frontal Offset Test Procedure,” Sep. 1992 Milan, Italy
- Ragland, C. Dalrymple, G. “Overlap Car-to-Car Tests Compared to Car to Half Barrier and Car to Full Barrier Tests,” 13th International Conference on Experimental Safety Vehicles Paris, France November 1991
- Pletschen, B. Hermann, R. Kallina, I. Zeidler, F. 1990 “The Significance of Frontal Offset Collisions in real World Accidents,” SAE SP-807 Vehicle Crashworthiness and Occupant Protection in Frontal Collisions
- Baumann, K.H. Groesch, L. Holtze, H. Schwede, W. 1990 “Frontal Offset Crash Testing for Approx. 15 Years: Results, Experiences and Consequences,” SAE SP-807 Veh. Crashworthiness & Occ. Protection in Frontal Collisions
- Groesch L. “Safety Performance of Passenger Cars Designed to Accommodate Frontal Impacts with Partial Overlap,” 1989 SAE Congress Detroit
- Mahmood, H.F. Wheatley, D.G. El-Bkaily, M.A. Bakkar, J.Y. “On the Front End Design of Automotive Vehicle for Crashworthiness,” 1993 ASME winter Annual Meeting New Orleans, Louisiana
- Baccouche, M.R. “V-CRUSH Post Processor Users Manual,” July 1994