Abstract
본 자동차 서스펜션 매트는 자동차 시트 백 프레임에 장착되며, 탑승자의 등 부위에 가해지는 압력을 시트서스펜션 매트로 받쳐줌으로써 압력이 집중되는 것을 방지하여 운전시 피로감을 최소화하고, 안락감을 증대할 수 있는 역할을 한다. 본 연구에서는 플라스틱 재질로 개발된 서스펜션 매트를 3D 모델링 하고, 진동 및 피로해석을 수행하였다. 해석 결과 플라스틱 서스펜션 매트의 고유 진동수는 30 Hz, 수명은 <TEX>$10^6$</TEX> Cycle, 안전계수는 1.6055의 해석 결과를 얻었다. 이러한 해석적 기법을 활용하면 시트 설계 부분에서 그 개발 시간 및 평가 비용을 절감할 수 있을 것으로 사료된다. Automotive suspension mat is installed at seat back frame. As the back part of passenger is aupported by suspension mat, it is prevented from the pressure concentration. The tired feeling at driving is minimized and the comfortable feeling is increased. In this study, vibration and fatigue are analyzed with plastic suspension mat modelled by 3 Dimension. By the analysis result, the natural frequency becomes 30 Hz with life of <TEX>$10^6$</TEX> cycle and safety factor of 1.6055. Development time and evaluation cost can be cut down by utilizing this analytical technique.
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