On the validation of the LS-DYNA Geo Metro numerical model

Bruski, Dawid; Burzyński, Stanisław; Chróścielewski, Jacek; Pachocki, Łukasz; Witkowski, Wojciech

doi:10.1051/matecconf/201926210001

Cited by 7 publications

(5 citation statements)

References 5 publications

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“…The pole was discretized using fully integrated Lagrangian Belytschko-Tsay (BT) shell elements. For the vehicle, the widely used and deeply validated Suzuki Geo Metro FE model was adopted [ 20 , 25 , 26 , 27 ] as modified by the Department of Mechanics of Materials and Structure, Gdańsk University of Technology, Poland [ 26 ]. The model consists of 14,709 shell elements and 820 solids.…”

Section: Problem Descriptionmentioning

confidence: 99%

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Numerical Simulation of Vehicle–Lighting Pole Crash Tests: Parametric Study of Factors Influencing Predicted Occupant Safety Levels

Baranowski

Damaziak

2021

Materials

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In this paper, numerical simulations of the EN 12767 test procedure for a vehicle–lighting pole crash are presented. A representative soil–vehicle–lighting pole model is first developed. The Geo Metro vehicle model is used, and significant attention is given to representing the soil and its interaction with the traffic pole. Soil is represented using smoothed particle hydrodynamics (SPH) coupled with finite elements (FEs). A parametric study is carried out to investigate the key factors influencing the outcomes and consequently the estimation of the occupant safety levels during crash scenario described in EN 12767. First, a sensitivity study of lighting pole mesh is conducted As a result, the optimal mesh size is used for further studies regarding physical parameters such as soil properties and friction coefficient in vehicle–pole interfaces. Friction and mesh size are found to have a considerable influence on the acceleration severity index (ASI), theoretical head impact velocity (THIV), post-impact velocity and vehicle behavior during the lighting pole crash scenario.

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Section: Problem Descriptionmentioning

confidence: 99%

“…Ref. [ 26 ] focused on improving the fidelity of numerical representations of the wheels of a vehicle impacting a guardrail, and [ 27 ] discussed the set of elastoplastic parameters of a chosen constitutive model of soil that will yield the best correlation of the calculation results with experimental results.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Vehicle–Lighting Pole Crash Tests: Parametric Study of Factors Influencing Predicted Occupant Safety Levels

Baranowski

Damaziak

2021

Materials

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“…In addition, airbag is filled with 17ms delay. Evaluation of modifications of Geo Metro have been presented in [10].…”

Section: Modified Geometro Vehiclementioning

confidence: 99%

On estimation of occupant safety in vehicular crashes into roadside obstacles using non-linear dynamic analysis

et al. 2019

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“…A composite-foam protective overlay was designed for the guide rail to meet this criterion. The barrier functionality parameters defined in PN-EN 1317-1:2010 Modelling and simulation of crash tests on road safety barriers is still being developed by Dziewulski (2016) and by a research team from Gdansk University of Technology, Poland (Bruski, Burzyński, Chróścielewski, Pachocki, & Witkowski, 2019;Burzyński, Chróścielewski, & Pachocki, 2018;Wilde, Jamroz, Budzyński, Bruski, Burzyński, Chróścielewski, Pachocki, & Witkowski, 2017). The investigations concern rectilinear protective barriers.…”

Section: Introductionmentioning

confidence: 99%

“…The numerical modelling and simulation methodology follows the methodology presented by Klasztorny, Nycz, & Szurgott (2016). Bruski, Burzyński, Chróścielewski, Pachocki, & Witkowski (2019) analyse the Geo Metro vehicle numerical model used for simulations of crash tests on straight-line road safety barriers, about tire/wheel breakage during the impact. Some methods for improvement of the numerical car model are proposed.…”

Section: Introductionmentioning

confidence: 99%

Modelling and Simulation of Crash Tests on Curved Barriers Taking into Account Vehicle Speed Limits

Klasztorny

Nycz

Zając

2019

BJRBE

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The reliable speed of a vehicle, assigned to a given road arc, is not usually taken into account in simulation of crash tests on road safety barriers located on horizontal concave arcs with small radii (20−200 m). In this work, the numerical modelling and simulations of TB11, TB32 crash tests for selected road safety barriers on a horizontal concave arc with a small radius of 150 m, at a reliable and increased speed of a vehicle, were conducted. The authors developed the methodology of numerical modelling and simulation and published in the period 2015−2018. In this study, crash tests include two N2 class steel road barriers with the B-type guide rail, i.e. SP-05/1 (with 1.00 m post spacing) and SP-05/2 (with 2.00 m post spacing). Suzuki Swift and Dodge Neon vehicle models were taken from the National Crash Analysis Center (USA) library and modified, respectively. It was proved that road traffic safety on horizontal concave arcs with small radii is assured if the reliable velocity is not exceeded by drivers. Compacting the post spacing or the uses of a composite-foam protective overlay added to guide rails are not recommended.

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On the validation of the LS-DYNA Geo Metro numerical model

Cited by 7 publications

References 5 publications

Numerical Simulation of Vehicle–Lighting Pole Crash Tests: Parametric Study of Factors Influencing Predicted Occupant Safety Levels

Numerical Simulation of Vehicle–Lighting Pole Crash Tests: Parametric Study of Factors Influencing Predicted Occupant Safety Levels

On estimation of occupant safety in vehicular crashes into roadside obstacles using non-linear dynamic analysis

Modelling and Simulation of Crash Tests on Curved Barriers Taking into Account Vehicle Speed Limits

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