This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Load Distribution Optimization of Seatbelt Using Validated Finite Element Approach
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 21, 2019 by SAE International in United States
Annotation ability available
Event: NuGen Summit
The seat belt system is one of most important component of the safety instrument family in a vehicle. The main purpose of seat belt is to minimize the injuries by preventing the occupant from impacting hard on interior parts of the vehicle and also the passenger from being thrown-out from the vehicle in case of rollover accidents. The standard three-point belt is mounted in the vehicle at three locations namely Anchor, D-ring and Buckle. The position of anchorages is very important to distribute the impact load evenly to the occupants. Very high load in any of these locations could cause breakage of the mountings and also concentrated loading on the occupant chest of pelvis. Current study mainly focuses on the seatbelt assembly performance improvement against UNECE-R16 sled test. The sled test was carried out first using 28g peak acceleration pulse and measurement of forces at shoulder and anchor position was measured using the load cell. FE (Finite Element) model of the complete seatbelt assembly was developed including Buckle, Retractor and Anchor plate. The simulation was carried out using TNO-10 R-16 dummy with the given position of D-ring, Buckle and Anchor plate. First correlation was established between the forces at shoulder location, Anchor plate location. Further correlation was established in the pelvis and thorax displacement. Multiple iterations were performed with the different position of anchorages in a given range in the validated model of seatbelt. The results showed significant effect of the Buckle and Anchor position in the force distribution on the dummy.
CitationSatija, A., Mishra, P., Gaurav, R., and Singh, V., "Load Distribution Optimization of Seatbelt Using Validated Finite Element Approach," SAE Technical Paper 2019-28-2575, 2019.
- Carmen Inge ALIC , “Finite Element Analysis of a Seat Belt Buckle Device.”
- Blincoe, L.J. , “The Economic Impact of Motor Vehicle Crashes”, 2000. Publication DOT HS 809 446. NHTSA, U.S. Department of Transportation, 2002.
- Haland, Y. , The Evolution of Three point Seatbelt from Today to Tomorrow (Madrid: Autoliv Research, IRCOBI, 2006).
- Foret-Bruno , “Comparison of Thoracic Injury Risk in Frontal Car Crashes for Occupant.”
- Adomeit , “Seat Design - A Significant Factor for Safety Belt Effectiveness,” SAE Technical Paper 791004 , 1979, doi:10.4271/791004.
- Sunanda Dissanayake, I.R. , “Effectiveness of Seat Belts in Reducing Injuries,” June 2007.
- Kent, R.W. , “Simulation of Belt Movement in the D-Ring during a Crash,” International Journal of Impact Engineering 1382-1395, 2007.
- Alic & Miklos , “Finite Element Analysis of a Latch Plate as Component of the Seat Belt Buckle Assembly”.
- ECE R16 , “Safety-Belts, Restraint Systems”.
- LS-DYNA , “Keyword User’s Manual,” Volume I and Volume II, Livemore Software Technology Corporation (LSTC), Version 971 R6.1.0, August 2012.
- Foret Bruno, J.Y. and Troseille, X. , “Comparison of Thoraic Injury Risk in Frontal Car Crashes for Occupant Retrained without Belt Load Limiters and Those Restrained with 6 kN and 4 kN Belt Load Limiters”.