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자료유형
학술저널
저자정보
저널정보
한국자동차공학회 International journal of automotive technology International journal of automotive technology Vol.7 No.5
발행연도
2006.8
수록면
555 - 564 (10page)

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The aim of this paper is to contribute to the efficient design of traffic light poles involved in vehicle frontal collisions by developing a computer-based, finite-element model capable of capturing the impact characteristics. This is achieved by using the available non-linear dynamic analysis software “LS-DYNA3D”, which can accurately predict the dynamic response of both the vehicle and the traffic light pole. The fiber reinforced polymer (FRP) as a new pole’s material is proposed in this paper to increase energy absorption capabilities in the case of a traffic pole involved in a vehicle head-on collision. Numerical analyses are conducted to evaluate the effects of key parameters on the response of the pole embedded in soil when impacted by vehicles, including: soil type (clay and sand) and pole material type (FRP and steel). It is demonstrated from the numerical analysis that the FRP pole-soil system has favorable advantages over steel poles, where the FRP pole absorbed vehicle impact energy in a smoother behavior, which leads to smoother acceleration pulse and less deformation of the vehicle than those encountered with steel poles. Also, it was observed that clayey soil brings a slightly more resistance than sandy soil which helps reducing pole movement at ground level. Finally, FRP pole system provides more energy absorbing leading to protection during minor impacts and under service loading, and remain flexible enough to avoid influencing vehicle occupants, thus reducing fatalities and injuries resulting from the crash.

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ABSTRACT
1. INTRODUCTION
2. FINITE ELEMENT MODELING
3. SOIL-POLE INTERACTION MODELING
4. SIMULATION RESULTS
5. CONCLUSIONS
ACKNOWLEDGEMENT
REFERENCES

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