3216 歩行者脚部インパクタを用いた乗用車衝撃試験のシミュレーション開発(OS5-3 安全・安心・防災の技術,OS5 安全・安心・防災・環境負荷低減,オーガナイズド・セッション)

概要

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EU directive started to evaluate a safety performance of lower leg protection on passenger cars using the TRL legform impactor. The purpose of the present study is to clarify the influence of different humidity conditions on the injury criteria of lower leg acceleration, knee shear displacement and knee bending angle of the TRL legform impactor from a simulation model. In the simulation model, an Arup TRL legform impactor was modified, and a simplified vehicle model of the front part of a small passenger car was developed. The material characteristics of confor foam CF45, used in the TRL legform impactor, were obtained in a high speed compression test, and were adopted for the legform impactor model. The simplified vehicle model was composed of the three parts; bonnet, upper bumper and lower bumper. The material characteristics of the bonnet (iron), bumper cover (resin), absorber (foamed styrol) and lower bumper (resin) were obtained in compression tests or tension test, and were adopted for the vehicle model. We simulated the legform impactor against a car impact scenario and identified the influence of humidity conditions on the injury criteria.
2008-12-09