Advertisement

Sandwich Composites

  • Franz F. P. Kollmann
  • Edward W. Kuenzi
  • Alfred J. Stamm

Abstract

A sandwich composite is a layered construction formed by bonding two thin facings to a relatively thick core. It is a “stressed skin” construction in which the facings resist nearly all of the applied in-plane, edgewise loads and flatwise bending moments. The thin, spaced facings provide nearly all of the bending rigidity to the construction. A thick core spaces the facings and transmits shear between them so they are effective about a common neutral axis. The core also provides most of the shear rigidity to the sandwich. The advantage of spaced facings to provide greater stiffness without much increase in amount of material needed was reported by Timoshenko(1953) to have been investigated by Duleau, circa 1820. This investigation led to the design of tubular bridges, I-beams and other stiff structural shapes.

Keywords

Sandwich Plate Sandwich Panel Sandwich Composite Forest Prod Honeycomb Core 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature Cited

  1. Anderson, L. O., Wood, L. W., (1964) Performance of sandwich panels in FPL Experimental Unit. Forest Prod. Lab. Paper FPL 12.Google Scholar
  2. Ericksen, W. S., March, H. W., (1958) Effects of shear deformation in the core of a flat rectangular sandwich panel. Forest Prod. Lab. Report 1583B.Google Scholar
  3. Kimel, W. R., (1956) Elastic buckling of a simply supported rectangular sandwich panel subjected to combined edgewise bending and compression. Forest Prod. Lab. Report 1857A.Google Scholar
  4. Kuenzi, E. W., (1951) Edgewise compressive strength of panels and flatwise flexural strength of strips of sandwich constructions. Forest Prod. Lab. Report 1827.Google Scholar
  5. Kuenzi, E. W., Bohannan, B., Stevens, G. H., (1965) Buckling coefficients for sandwich cylinders of finite length under uniform external lateral pressure. U. S. Forest Serv. Res. Note FPL 0104.Google Scholar
  6. Kuenzi, E. W., Ericksen, W. S., Zahn, J. J., (1962) Shear stability of flat panels of sandwich construction. Forest Prod. Lab. Report 1560.Google Scholar
  7. Kuenzi, E. W., Stevens, G. H., (1963) Determination of mechanical properties of adhesives for use in the design of bonded joints. U.S. Forest Serv. Res. Note FPL 011.Google Scholar
  8. Libove, C., Batdorf, S. B., (1948) A general small-deflection theory for flat sandwich plates. NACA TN 1526.Google Scholar
  9. March, H. W., Kuenzi, E. W., (1958) Buckling of sandwich cylinders in torsion. Forest Prod. Lab. Report 1840.Google Scholar
  10. NASA, (1965) National Aeronautics and Space Administration. Buckling of thin-walled circular cylinders. NASA SP-8007.Google Scholar
  11. Norris, C. B., (1964) Short-column compressive strength of sandwich constructions as affected by size of cells of honeycomb core. Materials. U.S. Forest Ser. Res. Note FPL 026.Google Scholar
  12. Norris, C. B., Ericksen, IV. S., Kommers, W. J., (1952) Flexural rigidity of a rectangular strip of sandwich construction. Forest Prod. Lab. Report 1505A.Google Scholar
  13. Norris, C. B., Ericksen, W. S., March, H. W. et al., (1949) Wrinkling of the facings of sandwich constructions subjected to edgewise compression. Forest Prod. Lab.Google Scholar
  14. Report 1810. Plantema, F. J., ( 1966 ) Sandwich construction. John Wiley & Son, Inc.Google Scholar
  15. Raville, M. E., (1962) Deflection and stresses in a uniformly loaded, simply supported, rectangular sandwich plate. Forest Prod. Lab. Report 1847.Google Scholar
  16. Timoshenko, S., (1953) History of the strength of materials. McGraw-Hill Book Co.Google Scholar

Copyright information

© Springer-Verlag, Berlin/Heidelberg 1975

Authors and Affiliations

  • Franz F. P. Kollmann
    • 1
  • Edward W. Kuenzi
    • 2
  • Alfred J. Stamm
    • 3
  1. 1.Institut für Holzforschung und HolztechnikUniversität MünchenGermany
  2. 2.U.S. Forest Products LaboratoryMadisonUSA
  3. 3.School of Forest Resources, Department of Wood and Paper ScienceNorth Carolina State UniversityRaleighUSA

Personalised recommendations