Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
권호 표지
DOI QR코드

DOI QR Code

Analytical Solution for the Ultimate Strength of Sandwich Panels under In-plane Compression and Lateral Pressure

조합 하중을 받은 샌드위치 패널의 최종강도 설계식 개발

  • Kim, Bong Ju (The Korea Ship and Offshore Research Institute, Pusan National University)
  • 김봉주 (부산대학교 선박해양플랜트기술연구원)
  • Received : 2019.10.03
  • Accepted : 2019.10.30
  • Published : 2019.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

The paper presents a closed-form analytical solution for the ultimate strength of sandwich panels with metal faces and an elastic isotropic core during combined in-plane compression and lateral pressure under clamped boundary condition. By using the principle of minimum potential energy, the stress distribution in the faces during uni-axial edge compression and constant lateral pressure was obtained. Then, the ultimate edge compression was derived on the basis that collapse occurs when yield has spread from the mid-length of the sides of the face plates to the center of the convex face plates. The results were validated by nonlinear finite element analysis. Because the solution is analytical and closed-form, it is rapid and efficient and is well-suited for use in practical structural design methods, including repetitive use in structural optimization. The solution applies for any elastic isotropic core material, but the application that stimulated this study was an elastomer-cored steel sandwich panel that had excellent energy absorbing and protective properties against fire, collisions, ballistic projectiles, and explosions.

Keywords

References

  1. ANSYS, 1999. Theory Reference (Release 5.6). ANSYS Inc., Canonsburg, PA.
  2. DNV-GL, 2016. DNVGL-CG-0154, Steel Sandwich Panel Construction. [Online] Available at: [Accessed September 2019].
  3. Kim, B.J., Hughes, O.F., 2005. Analytical Solution for the Ultimate Strength of Metal-faced Elastomer-cored Sandwich Panels under In-plane Edge Compression and Lateral Pressure. Journal of Sandwich Structures and Materials, 7(5), 363-394. https://doi.org/10.1177/1099636205051318
  4. Lloyd's Register (LR), 2019. Rules for the Application of Sandwich Panel Construction to Ship Structure. Boca Raton, FL.
  5. Mbakogu, F.C., Pavlovic, M.N., 2000. Bending of Clamped Orthotropic Rectangular Plates: a Variational Symbolic Solution. Computers and Structures, 77(2), 117-128. https://doi.org/10.1016/S0045-7949(99)00217-5
  6. Noor, A.K., Burton, S., Bert, C.W., 1996. Computational Models for Sandwich Panels and Shells. Applied Mechanics Review, 49(3), 155-199. https://doi.org/10.1115/1.3101923
  7. Paik, J.K., 2018. Ultimate Limit State Analysis and Design of Plated Structures. 2nd Edition, John Wiley & Sons, London.
  8. Plantema, F.J, 1966. Sandwich Construction: The Bending and Buckling of Sandwich Beams, Plates, and Shells. John Wiley & Sons, London.
  9. Riber, H.J., 1997. Non-linear Analytical Solutions for Laterally Loaded Sandwich Plates. Composite Structures, 39(1-2), 63-83. https://doi.org/10.1016/S0263-8223(97)00000-7
  10. Reddy, J.N., 2003. Mechanics of Laminated Composite Plates and Shells: Theory and Analysis. 2nd Edition, CRC Press, USA.
  11. Vinson, J.A., 2005. Plate and Panel Structures of Isotropic, Composite and Piezoelectric Materials, Including Sandwich Construction. Springer Netherlands.
  12. SPS Technology, 2019. What is SPS. [Online] Available at: [Accessed September 2019].
  13. Wikipedia, 2019a. Sandwich Panel. [Online] Available at: [Accessed September 2019].
  14. Wikipedia, 2019b. Sandwich Plate System. [Online] Available at: [Accessed September 2019].