Development and Validation of a Finite Element Model for the Polar-II Upper Body

Shin, Jeongho; Lee, Sang‐Hyun; Kerrigan, Jason; Darvish, Kurosh; Crandall, Jeff; Akiyama, Akihiko; Takahashi, Yukou; Okamoto, Masayoshi; Kikuchi, Yuji

doi:10.4271/2006-01-0684

Cited by 8 publications

(3 citation statements)

References 3 publications

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“…Moreover, when models reach high detail level, high computer power is required. The Polar II was developed in a numerically finite element version by Shin et al (2006). A finite element model of the Autoliv-Chalmers adult dummy was developed by Yao et al (2011).…”

Section: Full-body Dummies and Modelsmentioning

confidence: 99%

Priorities of pedestrian protection—A real-life study of severe injuries and car sources

Fredriksson

Rosen

Kullgren

2010

Accident Analysis & Prevention

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Section: Full-body Dummies and Modelsmentioning

confidence: 99%

Priorities of pedestrian protection—A real-life study of severe injuries and car sources

Fredriksson

Rosen

Kullgren

2010

Accident Analysis & Prevention

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“…A pedestrian simulation was performed using the POLAR II FE model [18,19] and the FE model of an MS vehicle in order to determine the maximum level of dummy-vehicle forces during a 40 km/h impact. In addition to the upperbody kinematics of pedestrian recorded at specified locations (head centre of gravity (CG), T1, T8, pelvis [29]), the time histories of resultant forces were calculated at the contact regions of the dummy with four components (lower stiffener, bumper, leading edge and grille, hood - Figure 2).…”

Section: Development Of An Ms Pedestrian Buckmentioning

confidence: 99%

“…While subsystem experiments are currently being used as the basis of evaluations for these regulations, car-to-pedestrian dummy impact tests 492 C.D. Untaroiu et al and verified at the full-scale level against kinematic data [18,19] recorded during the vehicle-dummy impact experiments [8]. The POLAR II FE model was developed using Hypermesh (Altair Engineering, Troy, MI, USA) and Generis (ESI, Paris, France) as pre-processors and PAM-CRASH/PAM-SAFE FE solver (version 2001, ESI [16]) was used for impact simulations.…”

Section: Introductionmentioning

confidence: 99%

Development and validation of pedestrian sedan bucks using finite-element simulations: a numerical investigation of the influence of vehicle automatic braking on the kinematics of the pedestrian involved in vehicle collisions

Untaroiu

Shin

Crandall

et al. 2010

International Journal of Crashworthiness

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2010) Development and validation of pedestrian sedan bucks using finite-element simulations: a numerical investigation of the influence of vehicle automatic braking on the kinematics of the pedestrian involved in vehicle collisions, International Journal of Crashworthiness, 15:5, 491-503,Previous vehicle-to-pedestrian impact simulations and experiments using pedestrian dummies and cadavers have shown that factors such as vehicle shape, pedestrian anthropometry and pre-impact conditions influence pedestrian kinematics and injury mechanisms. Generic pedestrian bucks, which approximate the geometrical and stiffness properties of current vehicles, would be useful in studying the influence of vehicle front-end structures on pedestrian kinematics and loading. This study explores the design of pedestrian bucks, intended to represent the basic vehicle front-end structures, consisting of five components: lower stiffener, bumper, hood leading edge and grille, hood and windshield. The deformable parts of the bucks were designed using types of currently manufactured materials, which allow fabricating the bucks in the future. The geometry of pedestrian bucks was approximated according to the contour cross-sections of two sedan vehicles used in previous pedestrian dummy and cadaver impact tests. Other cross-sectional dimensions and the stiffness of the buck components were determined by parameter identification using finite-element (FE) simulations of each sedan model. In the absence of a validated FE model of human, the FE model of the POLAR II pedestrian dummy was used to validate a mid-size sedan (MS) pedestrian buck. A good correlation of the pedestrian dummy kinematics and contact forces obtained in dummy-MS pedestrian buck with the corresponding data from dummy-MS vehicle simulation was achieved. A parametric study using the POLAR II FE model and different buck models -an MS buck and a large-size sedan (LS) buck -were run to study the influence of an automatic braking system for reducing the pedestrian injuries. The vehicle braking conditions showed reductions in the relative velocity of the head to the vehicle and increases in the time of head impact and in the wrap-around-distances (WAD) to primary head contact. The head impact velocity showed a greater sensitivity to the different buck shapes (e.g. LS buck versus MS buck) than to the braking deceleration. The buck FE models developed in this study are expected to be used in sensitivity and optimisation studies for the development of new pedestrian protection systems.

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A finite element model of a six-year-old child for simulating pedestrian accidents

Meng

Pak

Guleyupoglu

et al. 2017

Accident Analysis & Prevention

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Development and Validation of a Finite Element Model for the Polar-II Upper Body

Cited by 8 publications

References 3 publications

Priorities of pedestrian protection—A real-life study of severe injuries and car sources

Priorities of pedestrian protection—A real-life study of severe injuries and car sources

Development and validation of pedestrian sedan bucks using finite-element simulations: a numerical investigation of the influence of vehicle automatic braking on the kinematics of the pedestrian involved in vehicle collisions

A finite element model of a six-year-old child for simulating pedestrian accidents

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