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Besch, Alexander
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document
GVTR: A Generic Vehicle Test Rig Representative Of The Contemporary European Vehicle Fleet
Abstract
In the ACEA funded project ProPose a generic vehicle model was developed: (1) It was specifically developed for replicating the leg-loads in pedestrian accidents. (2) It is representative of the contemporary European sedans meeting FlexPLI requirements. (3) It is available in numerical and experimental environment.(4) It is intended for investigating the performance of aPLI, for validating numerical models of advanced legform impactors like aPLI and for the comparison of kinematics and responses of different HBM lower limbs.The structural impact response of vehicle front ends was captured with impactors: A rigid cylinder was equipped with 20 contact force transducers along its axis. The impactor’s motion was prescribed, such that an intrusion of (up to) 120mm was consistently achieved. Tests were conducted at four levels along the vehicle height (spoiler throughbonnetleadingedge)andatsixpositionsalongthelateralaxisofthevehicle.Thecontactforcesofindividual force transducers were assigned to the four contact regions (spoiler, bumper, grill and bonnet leading edge).Impactortestswereconductedagainstninesedans,eightSUVsandthreesportscars.Foreachvehiclecategorymedianforce-penetrationcharacteristicswereestablished.ThegeometryoftheCoHerentmodelswasadopted (and cross-checked against the median reference lines established in the study ProPose). InthenumericalenvironmenttheGVTRwastestedinimpactswithfullhumanbodymodels,anisolatedlegwith an upper body mass and a beta-release of aPLI. In the experimental environment the GVTR was tested with aPLIandFlexPLI.BodyloadsinGVTR-vs-HBMandaselectedvehicle-vs-HBMmatchverywell.Thesameapplies when comparing full HBM and isolated leg loads. The study included vehicles provided by German, Czech and French manufacturers. The GVTR’s structure and geometry is very simplistic for the sake of repeatability, robustness, testing costs and avoidance of error sources in the numerical model of GVTR.