Document Type



Master of Science (MS)


Mechanical Engineering

First Advisor's Name

Genady P. Cherepanov

First Advisor's Committee Title

Committee Chair

Second Advisor's Name

M.A. Ebadian

Third Advisor's Name

Mohammed El-Sayed

Fourth Advisor's Name

Cesar Levy

Fifth Advisor's Name

Kuang-Hsi Wu


Fibrous composites

Date of Defense



The classical problem of pullout of a long elastic rectilinear round bar (fiber) embedded in an elastic half-space (matrix) is considered before and while local debonding occurs. An approximate analytical solution derived from the elasticity theory, the intuitive Saint Venant's principle, the idea of boundary layer in hydrodynamics, and invariant Γ-integrals is presented. The problem is analyzed numerically by means of the finite element method using the ANSYS program. The cases of loading before and after the initiation of the debonding are studied. Both approaches, analytical and numerical, are compared in order to establish the concidence between them. The discrepancy is very small in the global sense though substantial differences appear at particular points.




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