TY - JOUR

T1 - Axial decay of stresses in a layered composite with slipping interfaces

AU - Wijeyewickrema, Anil C.

AU - Keer, Leon M.

N1 - Funding Information:
authors are pleased to achnowledge support from the Air Force Office of Scientific AFOSR-90-0237B.

PY - 1994

Y1 - 1994

N2 - 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.

AB - 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.

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U2 - 10.1016/0961-9526(94)90033-7

DO - 10.1016/0961-9526(94)90033-7

M3 - Article

AN - SCOPUS:0040055600

VL - 4

SP - 895

EP - 899

JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

SN - 1359-8368

IS - 9

ER -