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Optimum Design of Weight Reduction and Driving Performance enhancement for Formula type Self-design on-road vehicle

포뮬러 형태 자작자동차의 경량화 및 주행 성능 향상을 위한 최적설계에 관한 연구

  • Shin, Sang-Won (Department of Mechanical Engineering, Dong-A University) ;
  • Kang, Sin-Wook (Department of Mechanical Engineering, Dong-A University) ;
  • Ha, Seung-Hyun (Department of Mechanical Engineering, Dong-A University) ;
  • Park, Jin-Pyo (Department of Mechanical Engineering, Dong-A University) ;
  • Kim, Dae-Wan (R&D Division, NTF Tech Co.) ;
  • Lee, Moo-Yeon (Department of Mechanical Engineering, Dong-A University)
  • Received : 2017.09.25
  • Accepted : 2017.10.13
  • Published : 2017.10.31

Abstract

Weight reduction is one of the important issues in the automotive industry and the development of internal combustion engines vehicles, future vehicles, and eco-friendly vehicles for improving fuel efficiency. The objective of this study is to investigate the improvement of driving performance by weight reduction and optimum design for a formula-type self-designed on-road vehicle. This study is divided into the four steps. Firstly, the engine room was replaced and designed with a lighter engine. Secondly, an optimization study was conducted to simplify and lighten the vehicle components with the design of the frame. Thirdly, the structure design was optimized and the suspension was analyzed with the design of the frame. Finally, the design of an upright and hub with reduced weight was carried out using lighter parts. As a result, we reduced the weight of the vehicle by 48.5kg compared to the previous year (19.5%) and increased the acceleration from 6.8 s to 5.8 s.s.

경량화는 현재 자동차 산업에 있어 가장 중요하게 여겨지는 화두 중 하나이다. 내연기관은 물론 미래형 자동차, 친환경 자동차 개발을 위해 경량화는 자동차 산업에 있어서 결코 빠질 수 없는 소재이다. 친환경 자동차를 개발하는데 있어 연비향상과 주행성능향상은 경량화가 핵심이기 때문이다. 본 연구팀에서도 포뮬러 형태의 자작자동차를 제작하면서 경량화와 최적설계를 통한 주행 성능 향상에 주안점을 두고 연구를 시작하였다. 본 연구는 전년도 제작 차량을 바탕으로 다음의 네 가지 항목으로 나누어 진행하였다. 첫 번째, 엔진의 교체를 통한 엔진룸의 구조설계 및 경량화. 두 번째, 프레임의 최적설계를 통한 부재의 단순화 및 경량화 연구. 세 번째, 프레임의 최적설계에 따른 서스펜션의 구조설계 및 해석. 마지막으로, 업라이트와 허브의 설계 및 경량 부품 사용을 통한 경량화 등이다. 이러한 목표설정을 두고 차량 설계를 진행하였으며 결과적으로 전년도 차량 대비 48 kg을 감량하여 19.5% 만큼의 경량화 하였고 이에 가속도 또한 80 m 기준 6.65 s에서 5.8 s만큼 단축시켰다.

Keywords

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