自動車側面衝突のためのCFRP衝撃緩和ベルトの衝撃応答特性(<小特集>自動車技術を支える材料力学)

概要

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In automobiles, the CFRP has a possibility of weight reduction in automotive structures which can contribute to improve mileage and then to reduce Carbon dioxide. On the other hand, the safety of collision should be also made clear in the case of employing the CFRP to automotive structures. In this paper, the CFRP guarder belt equipped in the automotive door is developed and examined by an experiment and a numerical analysis for replacing the conventional steel door guarder beam. In the numerical analysis, a commercial FEM solver (ANSYS) was employed and the laminated shell element were used in the CFRP guarder belts. The impact response behavior and the absorbed energy of the CFRP guarder belt were obtained by the tower drop weight impact test. The experimental relation of impact load to displacement for CFRP guarder belt agreed well with that of numerical result. From the comparison of both results, the numerical method developed here is quite useful for estimating impact behaviors of CFRP guarder belt.
2009-10-25