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New modular assessment methods for pedestrian protection in the event of head impacts in the windscreen area

  • The head impact of pedestrians in the windscreen area shows a high relevance in real-world accidents. Nevertheless, there are neither biomechanical limits nor elaborated testing procedures available. Furthermore, the development of deployable protection systems like pop-up bonnets or external airbags has made faster progress than the corresponding testing methods. New requirements which are currently not considered are taken into account within a research project of BASt and the EC funded APROSYS (Advanced PROtection SYStems) integrated project relating to passive pedestrian protection. Testing procedures for head impact in the windscreen area should address these new boundary conditions. The presented modular procedure combines the advantages of virtual testing, including full-scale multi-body and finite element simulations, as well as hardware testing containing impactor tests based on the existing procedures of EEVC WG 17. To meet the efforts of harmonization in legislation, it refers to the Global Technical Regulation of UNECE (GTR No. 9). The basis for this combined hardware and virtual testing procedure is a robust categorization covering all passenger cars and light commercial vehicles and defining the testing zone including the related kinematics. The virtual testing part supports also the choice of the impact points for the hardware test and determines head impact timing for testing deployable systems. The assessment of the neck rotation angle and sharp edge contact in the rear gap of pop-up bonnets is included. For the demonstration of this procedure, a hardware sedan shaped vehicle was modified by integrating an airbag system. In addition, tests with the Honda Polar-II Dummy were performed for an evaluation of the new testing procedure. Comparing these results, it was concluded that a combination of simulation and updated subsystem tests forms an important step towards enhanced future pedestrian safety systems considering the windscreen area and the deployable systems.

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Author:Jens Bovenkerk, Christian Sahr, Oliver Zander, Ingo Kalliske
Document Type:Conference Proceeding
Date of Publication (online):2013/11/22
Contributing corporation:Technische Hochschule <Aachen> / Lehrstuhl und Institut für Kraftfahrzeuge
Release Date:2013/11/22
Tag:Konferenz; Kopf; Methode der finiten Elemente; Simulation; Verletzung; Windschutzscheibe; Zusammenstoß
Collision; Conference; Finite element method; Head; Injury; Simulation; Windscreen (veh)
Weiterhin beteiligt: TAKATA-PETRI Aktiengesellschaft.
Volltext: http://www-nrd.nhtsa.dot.gov/pdf/esv/esv21/09-0159.pdf
Source:Proceedings of the 21st International Technical Conference on the Enhanced Safety of Vehicles, June 15-18, 2009, Stuttgart, Germany
Institutes:Abteilung Fahrzeugtechnik / Abteilung Fahrzeugtechnik
Sonstige / Sonstige
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
collections:BASt-Beiträge / ITRD Sachgebiete / 91 Fahrzeugkonstruktion
BASt-Beiträge / Tagungen / International Technical Conference on the Enhanced Safety of Vehicles (ESV) / 21st ESV Conference 2009

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