A Test-Rig for Parametric Studies of the Car Seat

Lövsund, Per; Nilson, Gert; Thorngren, L.; Håland, Yngve; Svensson, Sven-Erik

doi:10.4271/930347

Cited by 7 publications

(5 citation statements)

References 7 publications

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“…Advances in motor vehicle technology and design, such as stronger glass, stronger support structures, stronger roofs, and remote sensing to detect animals entering highway right-of-ways, may prevent or decrease the number of human injuries. 24,31 This study has found that motorcycle drivers appear to be at a high risk of a fatal event if they collide with an animal. Wearing helmets has been shown to decrease brain injuries and deaths compared with drivers without helmets who were involved in a collision.…”

Section: Discussionmentioning

confidence: 94%

Risk Factors Associated With Fatal Animal-Vehicle Collisions in the United States, 1995–2004☆

Langley

Higgins

Herrin

2006

Wilderness & Environmental Medicine

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Section: Discussionmentioning

confidence: 94%

Risk Factors Associated With Fatal Animal-Vehicle Collisions in the United States, 1995–2004☆

Langley

Higgins

Herrin

2006

Wilderness & Environmental Medicine

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“…In order to assess the reliability of the multibody model, published data for similar pulses were used [13]. In particular, of the four car seat tests reported in [13] , the car seat test A was simulated for its close resemblance with the original MB model described previously.…”

Section: Multibody Model Validationmentioning

confidence: 99%

“…In particular, of the four car seat tests reported in [13] , the car seat test A was simulated for its close resemblance with the original MB model described previously. The test was carried out using a test-rig subjected to a 20 g acceleration; in order to evaluate the interaction between the seat and the passenger a 50-percentile hybrid III dummy was used.…”

Section: Multibody Model Validationmentioning

confidence: 99%

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A static test method to assess swivel seat strength in frontal impact

Preston¹,

Amato

Lyons

et al. 2014

International Journal of Crashworthiness

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Mechanical swivel seat adaptations are a key aftermarket disability modification to any small to medium sized passenger vehicle. However, the crashworthiness of these devices is currently unregulated and the existing 20 g dynamic sled testing approach is prohibitively expensive for prototype assessment purposes. In this paper, an alternative quasi-static test method for swivel seat assessment is presented, and two different approaches (free body diagram and multibody modelling) validated through published experimental data, are developed to determine the appropriate loading conditions to apply in the quasi-static testing.Results show the two theoretical approaches can give similar results for estimating the quasi-static loading conditions, and this depends on the seatbelt configuration.Application of the approach to quasi-static testing of both conventional seats and those with integrated seat belts showed the approach to be successful and easy to apply. It is proposed that this method be used by swivel seat designers to assess new prototypes prior to final validation via the traditional 20 g sled test.

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“…Cantilever seat pan could increase risk of submarining (Thorbole, 2015). Preventing penetration motion of the pelvis into the seat cushion (Baudrit et al, 2005) and increasing seat cushion stiffness (Tang and Liu, 2012;Lundell et al, 1981;Song et al, 1993;Adomeit and Heger, 1975;Adomeit, 1979;Lövsund et al, 1993;Laporte, 2006;Faure et al, 2007;Beck et al, 2011) could decrease risk of submarining. Wiechel and Bolte (2006) had found that changing seat cushion angle could prevent submarining in reclining seat, while their tests were performed with rigid seat which was not appropriate for real conditions.…”

Section: Introductionmentioning

confidence: 99%

Investigation of risk factors affecting injuries in reclining seat under frontal impact

Tang

Zheng

Zhou

2020

IJVS

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In autonomous vehicles, passengers often recline their seatbacks for a more comfortable posture. Such a reclined posture greatly increases risk of submarining and other injury concerns due to the unfavourable geometrical configuration of occupant, seat and seatbelt. In this paper, numerous simulations with a modified computational dummy model are proposed to analyse effects of various occupant restraint systems in frontal impact, including seatbelt, pretensioner, load limiter, locking tongue, airbag, knee bolster and so on. After the sensitivity analyses, four concepts for designing anti-submarining countermeasures are proposed: (1) increase the lap belt-topelvis friction coefficient; (2) reduce the shoulder belt force along with the use of the locking tongue; (3) increase the lap belt angle; (4) reduce the H point forward and downward displacement. Sled tests with anti-submarining countermeasures were conducted to verify the effectiveness of the anti-submarining concepts for reclining seats. Four anti-submarining countermeasures are suggested to prevent the submarining with no other auxiliary hurts: load limiter plus locking tongue, anchor pretensioners plus antisubmarining bar, seat cushion airbag, and retractor plus buckle pretensioner. This paper could give better understanding of submarining mechanism and eligible vehicle design.

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A Test-Rig for Parametric Studies of the Car Seat

Cited by 7 publications

References 7 publications

Risk Factors Associated With Fatal Animal-Vehicle Collisions in the United States, 1995–2004☆

Risk Factors Associated With Fatal Animal-Vehicle Collisions in the United States, 1995–2004☆

A static test method to assess swivel seat strength in frontal impact

Investigation of risk factors affecting injuries in reclining seat under frontal impact

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