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    초록·키워드

    Winding simulation for first coiling of filament wires were conducted to establish manufacturing technologies of tungsten filaments for automotive lighting. Natural frequencies and natural modes of rotational axis at 36,000 revolution/minute were calculated to avoid resonance. First coiling process was modeled by nonlinear contact problem and the finite element method was used to solved this problem and consider parameters on manufacturing processes. It is important to maintain equal pitch for continuous filament wires because life time of lighting depends on uniform pitch.

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      UCI(KEPA) : I410-ECN-0101-2009-556-014004615