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  • Crash analysis of the road restraint system [Elektronski vir]
    Vesenjak, Matej ; Ren, Zoran
    The paper presents a computational model used for the analysis of steel road constraint systems under vehicle impact conditions. Practical observations of the currently installed road restraint ... systems in Slovenia have shown that they are too stiff, which results in unacceptable deceleration during vehicle impact. This is mostly attributed to the inappropriate design of the distance spacer, which connects the guardrail with the post. The current distance spacer barely deforms during the collision of a vehicle in the initial phase of an impact, and is thus unable to absorb the crash energy. The purpose of the research is to compare new distance spacer designs with the currently used design by means of nonlinear dynamic computational analyses of a three dimensional barrier model subjected to test vehicle impact conditions. The finite element code LS-DYNA was used for this purpose. The results of computational simulations prove that the currently used road restraint system is indeed inappropriate for use on public roads. New distance spacer designs allow controllable deformation during the impact and absorb significantly a larger amount of vehicle crash energy which in turn reduces decelerations experienced by vehicle occupants and consequently improves their safety.
    Vir: LUXFEM 03 : analysis, reserach and design [Elektronski vir] (8 f.)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2003
    Jezik - angleški
    COBISS.SI-ID - 8421654

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