In electric vehicles, lightweight design is an important development objective for improving energy efficiency. Seat frame materials that are important for weight reduction use steel. In this study, weight optimization analysis was conducted by applying Almag, an aluminu-magnesium alloy material that offers excellent weight reduction while maintaining structural strength, to the seat frame. First, key stiffness members among the seat components were identified. Static strength analysis and natural frequency analysis were then performed on the steel seat frame. Based on the analysis results, a static optimization analysis was carried out for the application of the Almag material to achieve displacement levels equivalent to the static strength analysis. In addition, a dynamic optimization analysis was performed to maximize the natural frequency. Through these analyses, the optimal thicknesses of the seat back and cushion frame were determined.

Abstract
1. 서 론
2. 시트 백 프레임과 쿠션 프레임의 중량최적화 해석
    2.1 해석 모델 및 경계 조건
    2.2 정강도 및 고유진동수 해석 결과
    2.3 주요 강성 부재 선정
    2.4 두께 최적화 해석 프로세스
    2.5 강철 시트 프레임과 동일한 변위를 가지는 두께 최적화 해석 결과
    2.6 최대 고유진동수를 가지는 두께 최적화 해석결과
3. 결 론
후 기
References

• 박동규(Professor, Korea University of Technology and Education) | Dong-Kyou Park Corresponding author