The accuracy of the CRASHEX version of CRASH, which uses a Newtonian rather than a Cartesian treatment of impact, is compared with that of a substantially “original” version of CRASH, both evaluated with respect to EDSMAC computer simulations of the RICSAC series of staged, partially braked collisions; and with similar data for EDCRASH, as published but recomputed.Special problems inherent in treatment of impact with a stopped vehicle, quasi-head-on impact, failure to separate after initial impact, and spin truncated by side slap are discussed.Appropriate use of the statistical confidence interval in single-event reconstruction is also discussed, as are anomalies in previously published standard deviations for EDCRASH applied to the RICSAC data.The study shows that the Cartesian simplification incurs dominantly large errors, a finding not generally recognized. For complete and accurate reconstruction, Newtonian treatment, as now provided in CRASHEX, is requisite.


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    Titel :

    Validation of Newtonian Reconstruction (CRASHEX) Against Simulations of RICSAC Staged Collisions


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE International Congress and Exposition ; 1997



    Erscheinungsdatum :

    1997-02-24




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Validation of Newtonian Reconstruction (CRASHEX) Against Simulations of RICSAC Staged Collisions

    Fonda, A. G. / SAE | British Library Conference Proceedings | 1997


    Further validation of EDSMAC using the RICSAC staged collisions

    Day, T.D. / Hargens, R.L. | Tema Archiv | 1990


    Further Validation of EDCRASH Using the RICSAC Staged Collisions

    Hargens, Randall L. / Day, Terry D. | SAE Technical Papers | 1989


    Further Validation of EDSMAC Using the RICSAC Staged Collisions

    Hargens, Randall L. / Day, Terry D. | SAE Technical Papers | 1990