Experimental Study on the Ultimate Strength of Composite Cylinder under Hydrostatic Pressure

수압을 받는 복합재 원통의 최종강도 실험 연구

  • Cho, Sang-Rai (School of Naval Architecture and Ocean Engineering Ulsan Uni.) ;
  • Kim, Hyun-Su (School of Naval Architecture and Ocean Engineering Ulsan Uni.) ;
  • Koo, Jeong-Bon (School of Naval Architecture and Ocean Engineering Ulsan Uni.) ;
  • Cho, Jong-Rae (Dept. of Mechanical and Information Engineering Korea Maritime Uni.) ;
  • Kwon, Jin-Hwe (School of Mechanical and Aerospace Engineering Kyung-Sang Uni.) ;
  • Choi, Jin-Ho (School of Mechanical and Aerospace Engineering Kyung-Sang Uni.)
  • 조상래 (울산대학교 조선해양공학부) ;
  • 김현수 (울산대학교 조선해양공학부) ;
  • 구정본 (울산대학교 조선해양공학부) ;
  • 조종래 (해양대학교 기계정보공학과) ;
  • 권진회 (경상대학교 기계항공공학부) ;
  • 최진호 (경상대학교 기계항공공학부)
  • Published : 2006.11.16

Abstract

Composite material is one of the strong candidates for deep see pressure hulls. Research regarding composite unstiffened or stiffened cylinders subjected to hydrostatic pressure has a couple of decades history abroad but domestic research is very new. Experimental investigations seem necessary to understand their structural behavior not only up to the ultimate limit state but in post-ultimate regime. Those experimental information will be very helpful to develop any theoretical methods or to substantiate any commercial numerical packages for structural analyses. In this study, ultimate strength tests on seven composite cylinders subjected to hydrostatic pressure are reported, which includes the fabrication method of models, material properties of the material, initial shape imperfection measurements, test procedure and strain and axial shortening measurements during the tests. The ultimate strengths of the models were compared with those of numerical analyses. The numerical predictions are higher than the test results. It is necessary to improve the accuracy of the numerical predictions.

Keywords