This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Innovative Knee Airbag (KAB) Concept for Small Overlap and Oblique Frontal Impacts
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 2, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Considerable research has been conducted in terms of attempting to reduce lower leg injury risk in full frontal impacts, in some cases by the use of a knee airbag (KAB). However, there has been limited research into the performance of KAB systems during a crash test with increased oblique loading, such as the IIHS small overlap frontal test, an oblique moving deformable barrier test (OI) being researched by NHTSA, and a mobile progressive deformable barrier test (MPDB) that is expected to be implemented by Euro NCAP in the next few years. The objective of the current numerical study was concentrated on the evaluation of an innovative KAB concept design intended to reduce ATD right inboard lower leg/foot responses under small overlap and oblique loading conditions. A novel appendage KAB concept design was developed with the help of morphing and computational studies which were performed with different ATD sizes. In the study, one of the lower leg/foot responses was monitored and compared over a conventional KAB design. Cases investigated in the study showed that the novel appendage KAB concept design acts as a conventional KAB in full frontal impact modes (similar right inboard femur responses) and has the potential to reduce right inboard lower leg/foot responses by an average 16% (small overlap impact mode) and 20% (oblique impact mode) over the conventional KAB design. Furthermore, it was noted that the novel design could potentially be adapted to achieve targeted right inboard lower leg responses in full, offset and oblique frontal crash tests with minimal impact on the left outboard responses.
CitationMakwana, R. and Jindal, P., "Innovative Knee Airbag (KAB) Concept for Small Overlap and Oblique Frontal Impacts," SAE Technical Paper 2019-01-0621, 2019, https://doi.org/10.4271/2019-01-0621.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
- Ye, X., Gaewsky, P.J., Miller, E.L., Jones, A.D. et al., “Numerical Investigation of Driver Lower Extremity Injuries in Finite Element Frontal Crash Reconstruction,” Traffic Injury Prevention 19:21-28, doi:10.1080/15389588.2017.1376051.
- Gao, Z., Cheng, J., McCoy, R., Li, X. et al., “Acetabulum Injury Investigation of Proposed US-NCAP in OI Mode,” SAE Technical Paper 2018-01-0538, 2018, doi:10.4271/2018-01-0538.
- National Highway Traffic Safety Administration Request for Comments on the New Car Assessment Program, http://www.regulations.gov, Docket Number NHTSA-2015-0119.
- Ammori, M.B. and Abu-Zidan, F.M., “The Biomechanics of Lower Limb Injuries in Frontal-Impact Road Traffic Collisions,” Afri Health Sci. 18(2):321-332, 2018, doi:10.4314/ahs.v18i2.17.
- Jindal, P. and Makwana, R., “A Novel Vehicle Glove Box Design for Mitigating Lower Leg Dummy Responses in a Vehicle Frontal Impact,” SAE Technical Paper 2018-01-1326, 2018, doi:10.4271/2018-01-1326.
- Sherwood, C.P., Mueller, B.C., Nolan, M.J., Zuby, S.D. et al., “Development of a Frontal Small Overlap Crashworthiness Evaluation Test,” Traffic Injury Prevention 14(sup1):S128-S135, 2013, doi:10.1080/15389588.2013.790539.
- Rudd, R.W., “Updated Analysis of Lower Extremity Injury Risk in Frontal Crashes in the United States,” in 21st International Technical Conference on the Enhanced Safety of Vehicles, Stuttgart, Germany, 2009.
- Albert, D.L., Beeman, S.M., and Kemper, A.R., “Occupant Kinematics of the Hybrid III, THOR-M, and Postmortem Human Surrogates under Various Restraint Conditions in Full-Scale Frontal Sled Tests,” Traffic Injury Prevention 19(sup1):S50-S58, 2018, doi:10.1080/15389588.2017.1405390.
- Mueller, B.C. and Nolan, J.M., “Comparison of Vehicle Structure and Occupant Responses in Driver- and Passenger-Side IIHS Small Overlap Frontal Crash Tests,” Insurance Inst. Highway Safe, 2016.
- MADYMO (Tass International, Netherlands).
- HyperMesh, HyperMorph, HyperStudy, (Copyright of Altair Engineering Inc.).
- Meshwork’s Software DEP Inc. Troy, MI, USA.