Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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An Optimal Design of the Curtain Airbag System Using the Response Surface Method

반응표면법을 이용한 커튼 에어백 시스템의 최적설계

  • Received : 2012.06.25
  • Accepted : 2012.09.24
  • Published : 2013.01.01
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Abstract

There is not enough absorption space in the side of a vehicle so injuries to a passenger are higher compared to frontal impact injuries. For the protection of the passenger in the event of a side impact, vehicle regulations and new car assessment program(NCAP) are implemented all over the world. However, passive safety such as absorption technology of vehicle body itself is limited due to the narrow space of the side part. At the present time, it is well known that a side airbag including a curtain airbag is the most effective system to protect the passenger during a side impact. In this study, optimum design of the curtain airbag is carried out to reduce Head Injury Criterion(HIC) of the passenger. Based on crashworthiness simulation, an orthogonal array is selected based on the defined design variables, the response surfaces are generated from the orthogonal array and optimization is conducted with the surfaces.

자동차 측면 충돌사고는 충격흡수공간이 충분하지 않기 때문에 정면 충돌사고와는 달리 발생빈도에 비하여 탑승자의 상해비율이 매우 높은 경향을 나타낸다. 측면 충돌사고 발생시 탑승자를 보호하기 위하여 전세계 각국에서는 자동차안전기준 및 안전도평가 등의 법규를 시행 및 강화하고 있다. 그러나 차체 자체의 충격흡수력을 이용한 수동 안전방식으로는 협소한 공간에 기술을 적용하는데 한계가 있다. 커튼 에어백은 측면 에어백과 함께 현재로서는 측면충돌시 탑승자를 보호하는 가장 효과적인 시스템이다. 본 연구에서는 측면 충돌사고 발생시 탑승자의 머리상해지수를 감소시키기 위한 커튼 에어백의 최적설계를 수행하였다. 충돌 시뮬레이션을 바탕으로 직교배열표와 일원표, 그리고 반응표면법을 순차적으로 적용하고 각각의 결과에 대하여 확인실험으로 검증하여 커튼 에어백의 최적설계를 수행하였다.

Keywords

References

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