Investigating the injury risk in frontal impacts of Formula Student cars: a computer-aided engineering analysis

Abstract

This paper presents a parametric study of the injury risk in collisions of race cars designed for the European Formula Student competition. The study is motivated by the fact that only a limited assessment of driver safety is required for this competition. The approach was to model a Formula Student car in a mathematical dynamic model environment. A parametric study was then carried out to investigate the sensitivity of injury to various system variables. These were the crash pulse, the occupant stature, and the occupant posture. These system variables, under close examination, can be changed to alter the occupant kinematics or, in other words, they change the injury risk. The results of the analysis showed that the risk of injury in a frontal impact was dependent on the system variables. The risk of an abbreviated injury scale (AIS)2+ injury was 22.3 per cent in the baseline constant-g test, increasing to 35.2 per cent in the worst case. For AIS3+ the values were 5.1 per cent and 11 per cent, respectively. The study also showed that the occupant restraint conditions in a Formula Student car had a significant influence on the distribution of the injury risk between the body regions. The variation in the injury risk highlighted by this study, both in absolute terms and in the distribution between the body regions, showed that there are limitations to the use of vehicle kinematics in their current guise as a predictive tool for the injury risk. The results of this study represent a significant step in the understanding of the injury risk in a Formula Student frontal impact.

Keywords

Formula Student Formula SAE injury criteria frontal impact impact attenuator mathematical dynamic model crash pulse

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References

Wright

P. G.

The role of motorsport safety. In Proceedings of the 16th International Technical Conference on The enhanced safety of vehicles (ESV), Windsor, Ontario, Canada, 31 May–4 June 1998, paper 38-S6-O-12 (National Highway Traffic Safety Administration, Washington, DC).

Gibson

Henderson

Bethwaite

Australian motor sport crash data collection and analysis. SAE paper 2008-01-2980, 2008.

Gideon

Melvin

Crash recorders in racing – an overview. SAE paper 2008-01-2972, 2008.

F1 Formula 1. Did you know? Part two: black boxes & barriers, Formula One World Championship Ltd 2011, available from http://www.formula1.com/inside_f1/safety/did_you_know/7433.html.

Melvin

J. W.

Baron

K. J.

Little

W. C.

Gideon

T. W.

Pierce

Biomechanical analysis of Indy race car crashes. In Proceedings of the 42nd Stapp Car Crash Conference, 1998, paper 983161 (SAE International, Warrendale, Pennsylvania).

Wright

P. G.

The analysis of accident data recorder (ADR) data in Formula 1. SAE paper 2000-01-3551, 2000.

Ross

H. E.

Sicking

D. L.

Zimmer

R. A.

Michie

J. D.

Recommended procedures for the safety performance evaluation of highway features. NCHRP Report 350, National Cooperative Highway Research Program, Transportation Research Board, National Research Council, Washington, DC, 1993 (National Academy Press, Washington, DC).

EN 1317-2 Road restraint systems – Part 2: performance classes, impact test acceptance criteria and test methods for safety barriers, 2008 (European Committee for Standardization, Brussels).

Gabauer

D. J.

Gabler

H. C.

Comparison of roadside crash injury metrics using event data recorders. Accid. Analysis Prevention, 2008, 40(2), 548–558.

10.

Gabauer

D. J.

Gabler

H. C.

Comparison of roadside and vehicle crash test injury criteria in frontal crash tests. Int. J. Veh. Safety, 2008, 3(2), 135–148.

11.

Preston

Sparke

Race car safety development. In Proceedings of the 15th International Technical Conference on The enhanced safety of vehicles (ESV), Melbourne, Australia, 13–16 May 1996, paper 96-S4-W-23 (National Highway Traffic Safety Administration, Washington, DC).

12.

Weerappuli

D. P. V.

Sin

D. Z.

Stanecki

Predicting the response of a CART car driver in a crash using mathematical modeling. SAE paper 983069, 1998.

13.

Begeman

Melvin

Mathematical modelling of crash-induced dynamic loads on race car drivers. SAE paper 2002-01-3305, 2002.

14.

Workgroup Dataprocessing Vehicle Safety, Crash analysis criteria description, version 2.3, June 2011, available from http://www.mdvfs.org/Files/Crash%20Analysis%20Criteria/Crash%20Analysis%20Criteria.pdf.

15.

Prasad

Mertz

H. J.

The position of the United States delegation to the ISO Working Group on the use of HIC in the automotive environment. SAE paper 851246, 1985.

16.

Abbreviated injury scale (AIS) 1990 revision – update 98, 1998 (Association for the Advancement of Automotive Medicine, Barrington, Illinois).

17.

Yoganandan

Pintar

F. A.

Zhang

Gennarelli

Beuse

Biomechanical aspects of blunt and penetrating head injuries. In Proceedings of the IUTAM Symposium on The biomechanics of impacts, Dublin, Ireland, 11–15 July 2005, pp. 173–184 (Springer, Berlin).

18.

Eppinger

Sun

Bandak

Haffner

Khaewpong

Maltese

Kuppa

Nguyen

Takhounts

Tannous

Zhang

Saul

Development of improved injury criteria for the assessment of advanced automotive restraint systems – II. Report, National Highway Traffic Safety Administration, Washington, DC, USA, November1999.

19.

Review of the thorax injury criteria. Report AP-SP51-0038B (Integrated Project on Advanced Protection Systems, Project FP6-PLT-506503), APROSYS, 2006.

20.

Kuppa

Wang

Haffner

Eppinger

Lower extremity injuries and associated injury criteria. In Proceedings of the 17th International Technical Conference on The enhanced safety of vehicles (ESV), Amsterdam, The Netherlands, 4–7 June 2001, paper 457 (National Highway Traffic Safety Administration, Washington, DC).

21.

Morgan

R. M.

Eppinger

R. H.

Marcus

J. H.

Nichols

Human cadaver and Hybrid III responses to axial impacts of the femur. In Proceedings of the 1990 International IRCOBI Conference on The biomechanics of impacts, Lyon, France, 12–14 September 1990, pp. 21–35 (International Research Council on the Biomechanics of Injury, Zurich).

22.

Rising

Kane

Vernon

Adkins

Hoff

Brelin-Fornari

Analysis of a frontal impact of a Formula SAE vehicle. SAE paper 2006-01-3627, 2006.

23.

Frontal offset crashworthiness evaluation: guidelines for rating injury measures. Document, Insurance Institute for Highway Safety, Arlington, Virginia, USA, June 2009.

24.

Varat

S. M.

Husher

S. E.

Crash pulse modelling for vehicle safety research. In Proceedings of the 18th International Technical Conference on The enhanced safety of vehicles (ESV), Nagoya, Japan, 19–22 May 2003, paper 501 (National Highway Traffic Safety Administration, Washington, DC).

25.

Wagstrom

Structural adaptivity in frontal collisions – impact energy management adapted to crash severity. Thesis for the Degree of Licentiate of Engineering, Crash Safety Division, Chalmers University of Technology, Gothenburg, Sweden, 2004.

26.

Formula SAE^®, SAE Collegiate Design Series, Rules & important documents, SAE International, Warrendale, Pennsylvania, USA, 2010, available from http://students.sae.org/competitions/formulaseries/rules/.