This paper proposes from fundamental mechanics that the specific energy (E/M) absorpton characteristics of motorcycles and scooters in frontal impacts are similar where the primary load path is through the front wheel and fork assembly. Examination of 43 barrier test results for 14 different model types of motorcycle and scooter over the impact speed range from 10 km/h to 76 km/h shows that the specific energy versus wheelbase shortening characteristics are similar and that a single specific collision energy (E/M) regression eguation with its associated statistical distribution (r2 = 0.845) can be used to represent the motorcycle and scooter populations in frontal impact for wheelbase shortening up to 0.45 m where the front-fork and front-wheel assemblies remain intact, albeit deformed. Data from 31 staged tests where motorcycles or scooters impacted stationary cars at 90 deg are used to obtain the energy absorption characteristics of the side of cars subject to frontal motorcycle or scooter impact. These two regressions are used to estimate collision energy Eca from the permanent deformation or penetration depth of the collision partners, which, when substituted into the standard impact energy loss equation with the appropriate collision partner masses, yields an estimation of collision speed Vccs. This procedure for calculating collision closing speed Vccs is validated against 13 staged tests (six 90 deg impacts against stationary cars and seven angled impacts at angles up to 45 deg from the normal, four of which were against moving cars) and shows that the predicted Vccs speeds bound the actual speeds with a standard deviation of 11.2 km/h for collision closing speeds up to 122 km/h.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Motorcycle-to-car and scooter-to-car collisions: speed estimation from permanent deformation


    Weitere Titelangaben:

    Motorrad-Pkw- und Motorroller-Pkw-Kollisionen: Geschwindigkeitsabschätzung aufgrund bleibender Verformungen


    Beteiligte:
    Wood, D.P. (Autor:in) / Glynn, C. (Autor:in) / Walsh, D. (Autor:in)


    Erscheinungsdatum :

    2009


    Format / Umfang :

    20 Seiten, 16 Bilder, 9 Tabellen, 29 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch






    Motorcycle-to-car and scooter-to-car collisions: speed estimation from permanent deformation

    Wood,D.P. / Glynn,C. / Walsh,D. et al. | Kraftfahrwesen | 2009


    SCOOTER TYPE MOTORCYCLE

    YUIZONO JUN / NAGATA TAKUYA / HIGAKI YUJI | Europäisches Patentamt | 2018

    Freier Zugriff

    SCOOTER TYPE MOTORCYCLE

    YUIZONO JUN / NAGATA TAKUYA / HIGAKI YUJI | Europäisches Patentamt | 2020

    Freier Zugriff