Journal of the Korean Society for Advanced Composite Structures (복합신소재구조학회 논문집)

Korean Society for Advanced Composite Structures (한국복합신소재구조학회)
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Buckling Load of Columns with Same Volume and Length but Variable Cross-section along the Length

부피와 길이가 같은 변단면 기둥의 좌굴하중

  • Lee, Hong-Kyu (Department of Civil Engineering, Hongik University) ;
  • Yoo, Jong-Ho (Department of Civil Engineering, Hongik University) ;
  • Lee, Seung-Won (Department of Civil Engineering, Hongik University) ;
  • Kim, Sun-Hee (Department of Civil Engineering, Hongik University) ;
  • Won, Yong-Suk (Department of Civil Engineering, Hongik University) ;
  • Yoon, Soon-Jong (Department of Civil Engineering, Hongik University)
  • 이홍규 (홍익대학교 토목공학과) ;
  • 유종호 (홍익대학교 토목공학과) ;
  • 이승원 (홍익대학교 토목공학과) ;
  • 김선희 (홍익대학교 토목공학과) ;
  • 원용석 (홍익대학교 토목공학과) ;
  • 윤순종 (홍익대학교 토목공학과)
  • Received : 2015.08.31
  • Accepted : 2015.09.19
  • Published : 2015.09.30
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Abstract

In this paper, we present the result of investigations pertaining to the elastic buckling of simply supported columns with various cross-sectional dimensions but the same length and volume. In the investigations the accuracy of the analysis methods is studied and it was found that the result obtained by the successive approximations technique is the most accurate. In addition, the elastic buckling loads of columns with variable cross-section dimensions are obtained by the theoretical and numerical methods. From the results, it was found that the buckling loads obtained by the numerical methods are close to the buckling loads obtained by the successive approximations technique for the practical standpoints. Moreover, the buckling load of column with convexity in its middle is the highest while the buckling load of the tapered column is the lowest as expected.

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