Robust design optimization of frontal structures for minimizing injury risks of Flex Pedestrian Legform Impactor

Lee, Y. H.; Joo, Young-Hwan; Park, J. S.; Kim, Y. S.; Yim, Hong Jae

doi:10.1007/s12239-014-0079-6

Cited by 14 publications

(2 citation statements)

References 5 publications

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“…For instance, Davies 6 studied eight cars manufactured between 2006 and 2010 and concluded that stiffnesses of the bonnet and front bumper in modern cars are being reduced due to the influence of European New Car Assessment Program (Euro NCAP) pedestrian tests. Lee et al 7 carried out a design optimization of frontal structures such as the energy absorber, the lower bumper stiffener and the hood angle in order to reduce the injury risk, using a numerical model of the flexible pedestrian legform impactor (Flex-PL). Nie et al 8 developed a parametric vehicle front-end model in order to predict human lower limb injuries from geometry and stiffness variables by means of impact simulations with a pedestrian human body model.…”

Section: Introductionmentioning

confidence: 99%

Energy absorbing composite structure for frontal pedestrian protection in electric light vehicles

Valladares

Altubo

López

2017

Advances in Mechanical Engineering

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This article collects the development of a frontal composite structure for electric light vehicles (concretely within L7e European category), which has been required to fulfil energy absorption capabilities for pedestrian protection. An initial design made of a composite sandwich structure (glass fibre skins with polyvinyl chloride foam core) was proposed and a prototype was manufactured and tested against impact. Then, a numerical model was created and the impact test was simulated by the finite element method. After adjusting the numerical model to the real performance of the component, the initial material configuration of the sandwich composite was optimized according to design objectives involving safety, current regulations and repairability.

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Section: Introductionmentioning

confidence: 99%

Energy absorbing composite structure for frontal pedestrian protection in electric light vehicles

Valladares

Altubo

López

2017

Advances in Mechanical Engineering

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“…Jakobsson et al (2013) described the significance and developments of two decades of car design for applications to severe frontal collisions with partial overlap. Lee et al (2014) proposed the optimal design of vehicle structure for minimize injury of pedestrian legform in frontal crashworthiness.…”

Section: Introductionmentioning

confidence: 99%

Analysis of vehicle structural performance during small-overlap frontal impact

Nguyen

Lee

Yim

et al. 2015

Int.J Automot. Technol.

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This paper presents an analysis of the vehicle structural performance in the event of a small-overlap frontal impact (SOFI), based on a computer-based crash simulation model. The vehicle model was used for SOFI simulation according to real small-overlap test conditions. The crash simulation results were used to evaluate the overall vehicle structure through a comparison of intrusion measurements with the rating guidelines of the Insurance Institute for Highway Safety. The parts sensitive to a small-overlap crash were confirmed. Thickness optimization was conducted to strengthen the rocker panel, A-pillar, and lower hinge pillar in order to improve the vehicle structural performance in the event of a SOFI. The best values among the variables were chosen for the new design. The crash analysis using finite element models showed that the most serious deformation occurred to the A-pillar. In this study, the grade of the overall structure was changed from "poor" to "marginal".

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