Abstract
The paper concerns with the analysis of normative requirements pertaining to experimental setup of a crash test and its numerical modelling. An overview of parameters describing the collision of a vehicle with a road restraining system is presented. A short description of a concrete road safety barrier is presented. A brief description of numerical modelling procedures for crash tests is given as well. The parametric influence analysis is performed of the acceleration recording time on various crash test functionality parameters The simulations are carried out using LS-DYNA finite element code with a solver version R.8.1
Highlights
In January 2011 European Standards EN 1317 became mandatory in all countries within members of CEN (European Committee for Standardization) [1, 2]
To qualify road safety barrier to an appropriate containment level a corresponding crash test must be performed on the basis of European Standards [2]
Another criterion is impact severity level which is described by two parameters: ASI (Acceleration Severity Index) and THIV (Theoretical Head Impact Velocity)
Summary
In January 2011 European Standards EN 1317 became mandatory in all countries within members of CEN (European Committee for Standardization) [1, 2]. To qualify road safety barrier to an appropriate containment level a corresponding crash test must be performed on the basis of European Standards [2] Another criterion is impact severity level which is described by two parameters: ASI (Acceleration Severity Index) and THIV (Theoretical Head Impact Velocity). According to European Standards [1] every vehicle, used for the calculation of ASI and THIV, shall contain at least three accelerometers for measurement in three global directions and optionally an angular velocity sensor. The ASI parameter is assumed as a single, maximum measure of the data collected during collision, according to the formula ASI max[ ASI (t)] Another functional parameter calculated in crash test description is the Theoretical Head Impact Velocity (THIV). According to European Standards [1] the limit value for the THIV parameter for all acceptable impact severity levels is 33 km/h
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