Elastic layers bonded to reinforcing sheets are widely used in many

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Elastic layers bonded to reinforcing sheets are widely used in many
engineering applications, e.g., as elastic foundations to machinery, as seismic
isolators to structures, etc. Because of its practical importance, the behavior of
bonded elastic layers under some basic deformation modes (e.g., compression,
bending and shear modes) has attracted the attention of many researchers. However,
the analytical works available in literature involve, with the object of obtaining
design formulas, many simplifying assumptions. In this dissertation, a new
formulation is developed for the analysis of bonded elastic layers, which removes
most of the assumptions used in the earlier formulations. Since the displacement
boundary conditions are included in the formulation itself, there is no need to start
the formulation with some assumptions on stress and/or displacement distributions
or with some limitations on geometrical and/or material properties. For this reason,
the solutions derived from this formulation are valid not only for “thin” layers of
strictly/nearly incompressible materials but also for “thick” layers and/or
compressible materials.
The advanced solutions obtained within the framework of the new
formulation are used to study the behavior of bonded elastic layers under basic
deformation modes. The effects of three key parameters, shape factor, Poisson’s
ratio and reinforcement flexibility, on effective layer moduli, displacement/stress
distributions, and location/magnitude of maximum stresses are investigated. It is
shown that the stress assumptions of the “pressure” method are inconsistent with the
results obtained for thick layers and/or compressible materials and/or flexible
reinforcements, and that the assumption “plane sections remain plane” is not valid,
in general.

Seval Pınarbaşı
A new formulation for the analysis of bonded elastic layers · 2007 · 271 sayfa.
Danışman: Doç.Dr. Uğurhan Akyüz
Bu araştırmanı devamına: http://tez2.yok.gov.tr/tez.htm adresinden ulaşabilirsiniz.