공기역학적 불확실성을 고려한 CX 팬터그래프의 접촉력 안정성 평가

다국어 초록 (Multilingual Abstract)

The stability of the contact force of CX pantograph was assessed with considering aerodynamic uncertainties of the angle of attack(AOA) and velocity of the inflow(V<SUB>i</SUB>). At first, the aerodynamic modeling of pan head of CX pantograph was performed. And the standard deviation of the contact force of the simulation results were calculated with changing AOA and V<SUB>i</SUB>; the range of AOA was from –10° to 10° at intervals of 2° and that of V<SUB>i</SUB> was from 200㎞/h to 400㎞/h at intervals of 50㎞/h. From the results, the response surface model was constructed using the 8<SUP>th</SUP> order regression equation. Then, Monte Carlo Simulation (MCS) was performed to assess the probabilitic charateristics of uncertainties of AOA and V<SUB>i</SUB>. Therefore, it became possible to statistically evaluate the change in contact force due to the aerodynamic uncertainties of the AOA and V<SUB>i</SUB>.

참고문헌 (Reference)

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