대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제36권1호
  • /
  • Pages.51-58
  • /
  • 2012
  • /
  • 1226-4873(pISSN)
  • /
  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지
DOI QR코드

DOI QR Code

수치해석적 기법을 이용한 복합재 원통 셸의 좌굴 연구

Buckling Analysis of Composite Cylindrical Shell Using Numerical Analysis Method

  • 정해영 (부산대학교 기계공학부) ;
  • 조종래 (해양대학교 기계에너지시스템공학부) ;
  • 배원병 (부산대학교 기계공학부) ;
  • 이우형 (수중운동체특화센터)
  • Jung, Hae-Young (Dept. of Mechanical & Precision Engineering, Graduate School, Pusan Nat'l Univ.) ;
  • Cho, Jong-Rae (School of Mechanical and Energy System Engineering, Korea Maritime Univ.) ;
  • Bae, Won-Byung (Dept. of Mechanical & Precision Engineering, Graduate School, Pusan Nat'l Univ) ;
  • Lee, Woo-Hyung (Underwater Vehicle Research Center)
  • 투고 : 2011.07.27
  • 심사 : 2011.10.23
  • 발행 : 2012.01.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구는 외부 수압을 받는 복합재 원통 셸에 대해서 원통 좌굴식 (ASME 2007,NASA SP- 8007)과 유한요소법을 이용하여 좌굴 압력을 예측하기 위함이다. 본 연구에 사용된 모델은 적층 각도 [0/90]$_{12t}$ 이며 복합재 재질은 USN 125 이다. 복합재는 프리프래그 방식으로 제작되었다. 본 논문에 사용된 연구 방법은 원통 셸의 좌굴식, 유한요소해석을 수행하고 이를 실험으로 검증 하였다. 원통 셸의 좌굴식과 유한요소 결과를 비교하기 위하여 $20^{\circ}{\sim}90^{\circ}$까지 $5^{\circ}$씩 변화시켜 도식화 하여 비교하였다. 유한요소해석의 결과는 선형과 비선형은 안전율 0.85~1.0 으로 잘 일치하였다. 좌굴 압력식은 적층각이 증가할수록 좌굴압력이 증가하였다. 유한요소 해석과 비교하면 ASME 2007 식이 NASA SP-8007 식보다 안전율이 더 큰 식임을 알 수 있었다.

The objective of this paper is to predict the buckling pressure of a composite cylindrical shell using buckling formulas (ASME 2007, NASA SP 8007) and finite element analysis. The model in this study uses a stacking angle of [0/90]12t and USN 125 composite material. All specimens were made using a prepreg method. First, finite element analysis was conducted, and the results were verified through comparison with the hydrostatic pressure buckling experiment results. Second, the values obtained from the buckling formula and the buckling pressure values obtained from the finite element analysis were compared as the stacking angle was changed in $5^{\circ}$ increments from $20^{\circ}$ to $90^{\circ}$. The linear and nonlinear results of the finite element analysis were consistent with the results of the experiment, with a safety factor of 0.85-1. Based on the above result, the ASME 2007 formula, a simplified version of the NASA SP-8007 formula, is regarded as a buckling formula that provides a reliable safety factor.

키워드

과제정보

연구 과제 주관 기관 : 수중운동체특화연구센터

참고문헌

  1. Son, H. J. and Park, C. S., 1995, Introduction to Submarine Engineering, DaeYoungSa, Seoul, pp. 2-3.
  2. Bleich, H. H., 1952, Buckling Strength of Metal Structures, McGRAW-HILL, New York, pp. 132-143.
  3. Guggenberger, W., 1995, "Buckling and Postbuckling of Imperfect Cylindrical Shells under External Pressure," Thin-Walled Structures, Vol. 23, No. 1-4, pp. 351-366. https://doi.org/10.1016/0263-8231(95)00022-6
  4. Messager, T., Mariusz, P., Gineste, B. and Chauchot, P., 2002, "Optimal Laminations of Thin Underwater Composite Cylindrical Vessels," Composite Structures, Vol. 58, No. 4, pp. 529-537. https://doi.org/10.1016/S0263-8223(02)00162-9
  5. Kweon, J. H., Hong, C. S. and Lee, I. C., 1995, "Postbuckling Compressive Strength of Graphite/Epoxy Laminated Cylindrical Panels Loaded in Compression," AIAA J., Vol. 33, No. 2, pp. 217-222. https://doi.org/10.2514/3.12428
  6. Kim, J. H. and Kweon, J. H., 2000, "Numerical Method for Nonlinear Analysis of Composite Shells Under Constant Lateral Pressure and Incremented Inplane Compression," The Korea Society for composite Material, Vol. 13, No. 1, pp.69-77.
  7. Kim, M. H. and Cho, J. R., 2010, "Buckling Analysis of Filament-Wound Thick Composite Cylinder under Hydrostatic Pressure," International Journal of Precision Engineering and Manufacturing, Vol. 11, No. 6, pp. 909-913 https://doi.org/10.1007/s12541-010-0110-4
  8. Lee, Y. S., Jun, B. H. and Oh, J. M., 1997, "A Study on the Design Optimization of Composite Cylindrical Shells with vibration, Buckling Strength and Impact Strength Characteristics," KSAE, Vol. 5, No. 4, pp. 48-69.
  9. Cho, S. R., Kim, H. S., 2007, "Experimental Study on the Ultimate Strength of Composite Cylinders Under Hydrostatic Pressure," ISSN, Vol. 21, No. 3, pp. 52-57.
  10. ASME, 2007, 2007 ASME Bolier & Pressure Vessel Code Section X, ASME, pp. 34-35.
  11. National Aeronautics and Space Admistation, 1968, Buckling of Thin-Walled Circular Cylinders, NASA, Washington D.C, pp. 27-29.