Crashworthiness of Motor Vehicle and Traffic Light Pole in Frontal Collisions

Elmarakbi, Ahmed; Sennah, Khaled; Samaan, Magdy; Siriya, Praveen

doi:10.1061/(asce)0733-947x(2006)132:9(722)

Cited by 21 publications

(13 citation statements)

References 6 publications

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“…The total mass of the FEA model is added by 2.1%, and computation time is reduced by 60% with low accuracy loss. It is proved that the simulation result with the mass varying range< 5% is acceptable [7] . It is concluded that balance between accuracy and computational cost can be achieved by using appropriate mass scaling technique.…”

Section: Effect Of Mass Scaling Valuementioning

confidence: 84%

Dynamic Simulation on Impact Test of Vehicle Wheel

Zheng

Wang

2011

AEF

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Abstract. This paper establishes a numerical procedure to predict the aluminum wheel performance during the impact test. The dynamic finite element solver, Ansys-Lsdyna970, is used. In order to save the computation time, the striker is assigned with an initial velocity, which is equal to the velocity reached during the free-fall period upon release. Mass scaling method is also utilized to further reduce computational time. Equivalent plastic strain is used as the damage indicator to judge pass or fail for the dynamic impact test. The true stress-strain curve is obtained from a uni-axial tensile test of A356-T6 samples machined from a prototype wheel. Simulation results show that plastic deformation tends to be localized around spoke-to-hub junction area. Studies on a recent prototype wheel revealed good correlation between experimental results and numerical prediction. IntroductionImpact performance is critical for wheels to ensure vehicle safety and drive quality. This procedure establishes the minimum performance requirements for wheels of the passenger car, SUV and light truck. A wheel is usually consisted by 5 regions, which are hub, spoke, rim, flange and window, as shown in Fig.1. The wheel also needs to pass the multiple checks to ensure that it is not damaged prior to the test. At the same time, the numerical simulations of wheel impact test are essential in the wheel development process, which can reduce design time, especially for prototype building or concept verification in the early product development phase. When it is appropriately carried out, nonlinear finite element analysis can help engineer to validate the wheel design. Therefore, physical impact tests can be reduced or even eliminated after establishing the correlation between numerical simulation and lab impact test.

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Section: Effect Of Mass Scaling Valuementioning

confidence: 84%

Dynamic Simulation on Impact Test of Vehicle Wheel

Zheng

Wang

2011

AEF

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“…The EN 12767 standard provides only brief, basic data on the soil that should be used in certification tests (the S type of cohesive soil). Nevertheless, studies of vehicle–lighting pole crash test simulations report various data of soils used in numerical simulations [ 14 , 15 , 46 ]. Other papers do not describe the soil parameters used in analysis [ 16 , 47 ].…”

Section: Methodology Of Numerical Simulationsmentioning

confidence: 99%

“…In [ 13 ], the authors used a simplified vehicle model but focused on a realistic representation of the concrete barrier. Spring elements representing the soil surrounding a pole were used in [ 14 ] to investigate the influence of different pole supports on crash parameters.…”

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 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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“…Crosby et al (9) showed that the time history was estimated by the vehicle weight, the residual deformation, the change in velocity, and so on. Elmarakbi et al (10) performed finite element simulations with a full-vehicle model to evaluate the effect of crash partner, which was a pole in the study. Our method to classify the pattern of a crash is to be used in AACN where vehicle acceleration itself is recorded in EDR.…”

Section: Research Paper 20134097mentioning

confidence: 99%

Classification of Crash Pattern Based on Vehicle Acceleration and Prediction Algorithm for Occupant Injury

Katagiri

Tsubouchi

Ujihashi

et al. 2013

IJAE

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Injury prediction based on data from event data recorder in automatic collision notification is expected to reduce trauma deaths. Known to affect on injury, the crash pattern is required to be classified to accurately predict injury. We performed crash simulations with a full-vehicle finite element model, and determined typical vehicle acceleration profiles of each crash pattern. A method to classify a crash pattern by comparing vehicle acceleration with the typical profiles was found to be effective. We also performed multi-body simulations with a vehicle interior and a dummy model, and developed injury prediction algorithms of each crash pattern.

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Crashworthiness of Motor Vehicle and Traffic Light Pole in Frontal Collisions

Cited by 21 publications

References 6 publications

Dynamic Simulation on Impact Test of Vehicle Wheel

Dynamic Simulation on Impact Test of Vehicle Wheel

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

Classification of Crash Pattern Based on Vehicle Acceleration and Prediction Algorithm for Occupant Injury

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