콘텐츠 본문
논문 국내 국내전문학술지(KCI급) 알루미늄 압출재를 사용한 철도차량차체의 단위 압출재 최적설계
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2003-10
- 저자명 장창두, 하윤석, 조영천, 신광복
- 학술지명 한국철도학회 철도저널
- 발행처명 한국철도학회
- 발행국가 국내
- 논문언어 한국어
- 전체저자수 4
논문 초록 (Abstract)
To make railway carbody light in weight has advantages at some aspects of both manufacturing and maintenance. Recently, railway carbodys of steel structure have been lightened their weight by using aluminum extrusion plate. for the additional lightening of railway carbody, an optimal design which maintains proper strength and minimizes weight must be achieved. Optimization which is used with finite element analysis for aluminum extrusion plate has the disadvantage of consuming much time. In this paper, the method of equivalent material property which is available to FEA code is established using the method of equivalent stiffness. This method for plate is expanded into the method for railway carbody structure with plates and shells. An objective function is established for maximum stiffness of unit aluminum extrusion plate using established method of equivalent material property. We performed an multi-objective optimization using the penalty function method. As a result, recommendable shapes and sizes of unit extrusion plate for under-frame of high speed train is presented.
