Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.467789
Title: Some high frequency diffraction problems in classical elastodynamics
Author: Osborne, Anthony David
ISNI:       0000 0001 3460 3529
Awarding Body: University of Surrey
Current Institution: University of Surrey
Date of Award: 1972
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Abstract:
The diffraction of high frequency torsion waves by disc-shaped obstacles, situated in solids which are homogeneous, isotropic and of infinite extent, are considered in this thesis. In a high frequency limit these problems are formulated as Fredholm integral equations of the second kind. The thesis is divided into two chapters:- Chapter I: diffraction of high frequency torsion waves by a penny-shaped crack. Explicit asymptotic expressions are obtained for the dynamic stress intensity factors and the scattering coefficients. These results predict an oscillatory behaviour of the stress intensity factors at high frequencies. Chapter II: diffraction of high frequency torsion waves by a rigid disc. Explicit asymptotic expressions are obtained for the torque resisting the motion of the disc, and for the scattering coefficients. In both chapters extensive, numerical results are given.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.467789  DOI: Not available
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