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http://dx.doi.org/10.14317/jami.2014.761

NONCONFORMING SPECTRAL ELEMENT METHOD FOR ELASTICITY INTERFACE PROBLEMS  

Kumar, N. Kishore (Department of Mathematics, BITS-Pilani Hyderabad Campus)
Publication Information
Journal of applied mathematics & informatics / v.32, no.5_6, 2014 , pp. 761-781 More about this Journal
Abstract
An exponentially accurate nonconforming spectral element method for elasticity systems with discontinuities in the coefficients and the flux across the interface is proposed in this paper. The method is least-squares spectral element method. The jump in the flux across the interface is incorporated (in appropriate Sobolev norm) in the functional to be minimized. The interface is resolved exactly using blending elements. The solution is obtained by the preconditioned conjugate gradient method. The numerical solution for different examples with discontinuous coefficients and non-homogeneous jump in the flux across the interface are presented to show the efficiency of the proposed method.
Keywords
Elasticity interface problems; least-squares method; nonconforming; preconditioner; exponential accuracy;
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