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논문 국내 국내전문학술지(KCI급) 소재대체법과 치수최적화 기법을 이용한 2층 고속열차 하이브리드 차체 구조물의 경량 설계 연구
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2019-02
- 저자명 임재문, 정민호, 김종연, 신광복
- 학술지명 Composites Research
- 발행처명 한국복합재료학회
- 발행국가 국내
- 논문언어 한국어
- 전체저자수 4
- 논문 다운로드 링크(외부) https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART002453108
- 연구분야 공학 > 재료공학
논문 초록 (Abstract)
The purpose of this paper is to suggest a lightweight design for the aluminum extrusion carbody structure of a double deck high-speed train using material substitution and size optimization method. In order to conduct material substitution, the topology optimization was used to determine the application parts of sandwich composites at the carbody structures. The results of analysis showed that sandwich composites could be applied at roof and 2nd underframe. The size optimization was used to determine thickness of the aluminum extruded and carbon/epoxy composite. The design variable, state constraint and objective function were formulated to solve the size optimization, and then, the feasible design was presented by these conditions. The results of the lightweight design showed that the weight of double deck high-speed train hybrid carbody could be reduced by 2.18(17.70%) tons.
