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Low-Energy Seat Compression: Characterizing Stiffness in Different Vehicles
Technical Paper
2020-01-0527
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In rear-end collisions, occupants move rearward relative to the vehicle interior, while compressing the seatback. In low-energy impacts, the stiffness of the non-frame seat components may influence the kinematic response of an occupant. Previous research has reported seat stiffness from experiments for a limited number of seats. Because passenger vehicle seats have evolved, this current work reports a range of seat stiffnesses for modern passenger vehicles. A portable measuring device to characterize vehicle seat stiffness was built to accommodate a wide range of vehicle types. The device measured simultaneously the force applied to the seat and the displacement of the seat cushion. Seats of sedans, crossovers, sport utility vehicles, minivans, and pickup trucks for model years between 2016 and 2020 were tested using the device. For each seat, three measurements were taken for four different seat regions: upper seatback, lower seatback, aft seat bottom and fore seat bottom. The seat stiffness for each region was determined using a linear fit of the force-displacement curve generated during testing. The range of seat stiffness across all seat types was 3.13 kN/m to 23.32 kN/m. The average stiffness was 11.22 kN/m (SD 4.34 kN/m) for the upper seatback, 9.34 kN/m (SD 3.07 kN/m) for the lower seatback, 14.54 kN/m (SD 3.38 kN/m) for the aft seat bottom and 15.02 kN/m (SD 3.81 kN/m) for the fore seat bottom. Seat stiffness was significantly lower for all vehicle types for the lower seatback compared to aft seat bottom and fore seat bottom.
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Suderman, B., Cruise, D., Yang, N., Lau, E. et al., "Low-Energy Seat Compression: Characterizing Stiffness in Different Vehicles," SAE Technical Paper 2020-01-0527, 2020, https://doi.org/10.4271/2020-01-0527.Data Sets - Support Documents
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References
- Benson , B. , Smith , G. , Kent , R. , and Monson , C. Effect of Seat Stiffness in Out-of-Position Occupant Response in Rear-End Collisions SAE Technical Paper 962434 1996 https://doi.org/10.4271/962434
- Jo , H.-C. and Kim , Y.-E. A Study on the Influence of the Seat and Head Restraint Foam Stiffnesses on Neck and Injury in Low Speed Offset Rear Impacts Int. J of Prec Eng And Manu 10 2 105 110 2009
- Ouellet , S. , Cronin , D. , and Worswick , M. Compressive Response of Polymeric Foams Under Quasi-Static, Medium and High Strain Rate Conditions Polymer Testing 25 731 743 2006
- Verver , M.M. , de Lange , R. , van Hoof , J. , and Wismans , J.S.H.M. 2005 Aspects of Seat Modelling for Seating Comfort Analysis Applied Ergonomics 36 1 33 42 10.1016/j.apergo.2004.09.002
- Watanabe , Y. , Ichikawa , H. , Kayama , O. , Ono , K. et al. Relationships Between Occupant Motion and Seat Characteristics in Low-Speed Rear Impacts SAE Technical Paper 1999-01-0635 1999 1999 https://doi.org/10.4271/1999-01-0635
- Welcher , J.B. and Szabo , T.J. Relationships Between Seat Properties and Human Subject Kinematics in Rear Impact Tests Accident Analysis 33 289 304 2001