DOI QR코드

DOI QR Code

Orthotropic sandwich plates with interlayer slip and under edgewise loads

  • Hussein, R.
  • Received : 2003.02.03
  • Accepted : 2003.11.04
  • Published : 2004.02.25

Abstract

An elasticity solution for sandwich plates assembled with non-rigid bonding and subjected to edgewise loads is presented. The solution satisfies the equilibrium equations of the face and core elements, the compatibility equations of stresses and strains at the interfaces, and the boundary conditions. To investigate the effects of bonding stiffnesses on the responses of sandwich plates, numerical evaluations are conducted. The results obtained have shown that the bonding stiffness, up to a certain level, has a strong effect on the plate mechanical response. Beyond this level, the usual assumption of perfect bonding used in classical theories is quite acceptable. An answer to what constitutes perfect bonding is found in terms of the ratio of the core stiffness to the bonding stiffness.

Keywords

References

  1. Allen, H.G. (1969), Analysis and Design of Structural Sandwich Panels, Pergamon Press Ltd., New York and London.
  2. Goodman, J.R. and Popov, E.P. (1968), "Layered beam systems with interlayer slip", J. Struct. Eng. Div., ASCE, 94(ST11).
  3. Goodman, J.R. (1969), "Layered wood systems with interlayer slip", Wood Science, 1(3).
  4. Goodman, J.R., Vanderbilt, M.D., Criswell, M.E. and Bodig, J. (1974), "Composite and two-way action in wood joist floor systems", Wood Science, 7(1).
  5. Haan, D.L. (1996), "A new foam core for demanding sandwich structures", Proc. of the Third Int. Conf. on Sandwich Construction, Southampton UK, March.
  6. Hussein, R. et al. (1982), "Sandwich beam-columns with interlayer slips", J. Eng. Mech. Div., ASCE, 108(EM2).
  7. Hussein, R. (1984a), "Sandwich plates with interlayer slips", J. Eng. Mech. Div., ASCE, 110(EM4).
  8. Hussein, R. (1984b), "Thermal stresses in sandwich panels", Canadian Aeronautics and Space Journal, 30(2).
  9. Hussein, R. (1986), Composite Panels/Plates - Analysis and Design, Technomic Publishing Inc., Pennsylvania USA.
  10. Hussein, R. et al. (1989), "Thermal stresses in sandwich panels with interlayer slips", Journal of Thermal Stresses, 12(2).
  11. Hussein, R. (1992), "Effects of bonding stiffness on thermal stresses in sandwich panels", Journal of the Aerospace Engineering Division, ASCE, 5(4).
  12. Hussein, R. and Cheremisinoff, N.P. (1993), "Polymer applications in the construction industry", Chapter 26, Elasomer Technology Handbook, CRC Press, Florida USA.
  13. Hussein, R. (1993), "Polymers in sandwich construction", Chapter 27, Elasomer Technology Handbook, CRC Press, Florida USA.
  14. Hussein, R. (2002a), "Exact closed-form solutions for fiber-fiber and bond-fiber interactions with imperfect bonding", Progress in Paper Physics Conference, Skaneateles NY, September.
  15. Hussein, R. (2002b), "An analytic solution for fiber-bond interactions", 116th ESPRA Conference, Betlehem PA, May.
  16. Isakson, G. and Levy, A. (1971), "Finite element analysis of interlaminar shear in fibrous composites", Journal of Composite Materials, 5.
  17. Karbhari, V.M. (1997), "Application of composite materials to the renewal of twenty- first century infrastructure", Proc. of the Eleventh Conf. on Composite Materials, Melbourne Australia.
  18. Noor, A.K. et al. (1996), "Computational models for sandwich panels and shells", Applied Mechanics Reviews, 49(3).
  19. Plantema, F.J. (1966), Sandwich Construction - The Bending and Buckling of Sandwich Beams, Plates and Shells, John Wiley and Sons, Inc., New York.
  20. Puppo, A.H. and Evensen, H.A. (1970), "Interlaminar shear in laminated composites under generalized plane stress", Journal of Composite Materials, 4.
  21. Swanson, S.R. (1997), Introduction to Design and Analysis with Advanced Composite Materials, Prentice-Hall Publisher, NJ.
  22. Vanderbilt, M.D., Goodman, J.R. and Criswell, M.E. (1974), "Service and overload behavior of wood joist floor systems", J. Struct. Eng. Div., ASCE, 100(ST1).