Axial decay of stresses in a layered composite with slipping interfaces

Anil C. Wijeyewickrema*, Leon M. Keer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


The axial diffusion of self-equilibrated end loads in sandwich strip composites composed of two dissimilar isotropic elastic materials with imperfect interfaces, is investigated in the context of the plane problem. An Airy stress function approach is utilized to obtain the characteristic equation where the non-zero roots correspond to the decay rates. The dominant exponential decay rate, which corresponds to the smallest positive real part of the roots, is presented in a convenient form for all combinations of materials and volume fractions. For the case of symmetric deformation of a sandwich strip with a relatively soft inner core, the decay rates are much slower for all volume fractions when compared to a strip with a relatively rigid inner core. The analysis also shows that decay rates for a composite strip with arbitrary end loadings are governed by the symmetric case.

Original languageEnglish (US)
Pages (from-to)895-899
Number of pages5
JournalComposites Engineering
Issue number9
StatePublished - 1994

ASJC Scopus subject areas

  • Engineering(all)


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