10. Sandwich Structure

  1. Christos Kassapoglou

Published Online: 1 MAY 2013

DOI: 10.1002/9781118536933.ch10

Design and Analysis of Composite Structures: With Applications to Aerospace Structures

Design and Analysis of Composite Structures: With Applications to Aerospace Structures

How to Cite

Kassapoglou, C. (2013) Sandwich Structure, in Design and Analysis of Composite Structures: With Applications to Aerospace Structures, John Wiley & Sons Ltd, Oxford, UK. doi: 10.1002/9781118536933.ch10

Author Information

  1. Delft University of Technology, The Netherlands

Publication History

  1. Published Online: 1 MAY 2013
  2. Published Print: 17 MAY 2013

ISBN Information

Print ISBN: 9781118401606

Online ISBN: 9781118536933

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Keywords:

  • sandwich intracellular buckling;
  • sandwich stiffness;
  • sandwich structure;
  • wrinkling load

Summary

A sandwich structure typically consists of two facesheets separated by lightweight core. Buckling is one of the critical failure modes for sandwich structure in particular for relatively large panels. A sandwich can be treated as a laminate where the core is just another ply with negligible stiffness and strength properties and thickness equal to the core thickness. Buckling is one of the critical failure modes for sandwich structure in particular for relatively large panels. The reason is that it is hard to design against all possible failure modes in the post-buckling regime and, as a result, buckling is usually considered to coincide with final failure. Wrinkling is a local buckling phenomenon where the facesheet of a sandwich buckles over a characteristic half-wavelength l, which is unrelated to the overall length or width of the panel. This chapter also discusses sandwich intracellular buckling under compression and attaching sandwich structures.