A study on the influence of the seat and head restraint foam stiffnesses on neck injury in low speed offset rear impacts

jo, huichang; Kim, Young Eun

doi:10.1007/s12541-009-0034-z

Cited by 12 publications

(8 citation statements)

References 6 publications

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“…Based on C-NCAP 2012, a hybrid Ⅲ 5% female dummy is set in the left of rear seat, specify the initial state for Dummy by command INITIAL.JOINT.POS (Jo 2007, Beheshti 2010. Accurately positioning the dummy by dynamic balance method.…”

Section: Dummy Modelmentioning

confidence: 99%

Research of Front Seat Design Parameters on Rear Seat Passenger in Front Crash

Zhao¹,

Jiao²

2017

Proceedings of the 2017 2nd International Conference on Advances in Materials, Mechatronics and Civil Engineering (ICAMMCE 2017

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Abstract:In order to study the influence of front seat parameters on rear seat passenger when front crash happens, this article uses the MADYMO software to establish the rear seat passenger constraint system model which including car bodies, safety belts and a 5% dummy for impact simulation. The simulation values are close to test ones after contrasted with the vehicle impact test. The influence of design parameters including the front seat headrest and backrest parameters on passenger HIC, T3MS, femur force is researched by this model. With the optimized parameters, the rear passenger head, chest and leg injury are decreased so that the safety of rear passenger can be effectively improved.

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Section: Dummy Modelmentioning

confidence: 99%

Research of Front Seat Design Parameters on Rear Seat Passenger in Front Crash

Zhao¹,

Jiao²

2017

Proceedings of the 2017 2nd International Conference on Advances in Materials, Mechatronics and Civil Engineering (ICAMMCE 2017

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“…[1][2][3][4][5][6]. In general, researches for passenger protection are divided into the method of examination and the method of analysis.…”

Section: Introductionmentioning

confidence: 99%

Human Behavior Analysis under Drop Test using MADYMO

Choi¹,

Kim²,

Pack³

et al. 2016

International Journal of Aerospace System Engineering

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This dissertation tried to analyze passenger behaviors after an accident with the possibilities of a variety of accidents open reflecting the phases of the times of increasing interests in safety of passengers as the use of means of transportation such as cars and airplanes is increasing. Because a lot of data on head-on collisions, broadside collisions and reverse side collisions have been gathered through lots of experiments and interpretations, I chose to study a relatively unfamiliar subject, dropping collision. For example, I tried to study passenger behaviors in seating position after a dropping collision in preparation for falling accidents due to recent frequently-occurring sinkholes, driver`s carelessness or mechanical problems. I used MADYMO, passenger behavior interpretation program, and experimented with 2 meters high Drop Test device which I made in person to increase the reliability of the results. On the basis of these, I compared the real experiments with interpretations.

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“…Currently, the PVB interlayer material (Valera and Demarquette, 2008), which is widely used in windshields, absorbs limited energy upon large deformation (while the outer glass layer resists impact to some extent) Xu et al, In press-a). However, the energy absorption capability of traditional foams and honeycombs are still quite low, on the order of 0.1~10 J/g (Jo and Kim, 2009;Stobener and Rausch, 2009).…”

Section: Introductionmentioning

confidence: 99%

Automotive windshield — pedestrian head impact: Energy absorption capability of interlayer material

Chen

et al. 2011

Int.J Automot. Technol.

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During accident, the interlayer of windshield plays an important role in the crash safety of automotive and protection of pedestrian or passenger. The understanding of its energy absorption capability is of fundamental importance. Conventional interlayer material of automotive windshield is made by Polyvinyl butyral (PVB). Recently, a new candidate of high-performance nanoporous energy absorption system (NEAS) has been suggested as a candidate for crashworthiness. For the model problem of pedestrian head impact with windshield, we compare the energy absorption capabilities of PVB and NEAS interlayers, in terms of the contact force, acceleration, velocity, head injury criteria, and energy absorption ratio, among which results obtained from PVB interlayers are validated by literature references. The impact speed is obtained from virtual test field in PC-CRASH, and the impact simulations are carried out using explicit finite element simulations. Both the accident speed and interlayer thickness are varied to explore their effects. The explicit relationships established among the energy absorption capabilities, impact speed, and interlayer material/thickness, are useful for safety evaluation as well as automotive design. It is shown that the NEAS interlayer may absorb more energy than PVB interlayer and it may be a competitive candidate for windshield interlayer.

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A study on the influence of the seat and head restraint foam stiffnesses on neck injury in low speed offset rear impacts

Cited by 12 publications

References 6 publications

Research of Front Seat Design Parameters on Rear Seat Passenger in Front Crash

Research of Front Seat Design Parameters on Rear Seat Passenger in Front Crash

Human Behavior Analysis under Drop Test using MADYMO

Automotive windshield — pedestrian head impact: Energy absorption capability of interlayer material

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