This work deals with the Cauchy problem in two-dimensional linear elasticity. The equations of the prob- lem are discretized through a standard FEM approach and the resulting ill-conditioned discrete problem is solved within the frame of the Tikhonov approach, the choice of the required regularization parameter is accomplished through the Generalized Cross Validation criterion. On this basis a numerical experimen- tation has been performed and the calculated solutions have been used to highlight the sensitivity to the amount of known data, the noise always present in the data, the regularity of boundary conditions and the choice of the regularization parameter. The aim of the numerical study is to implicitly device some guidelines to be used in the solution of this kind of problems.

A numerical study on the solution of the Cauchy problem in elasticity / Bilotta, A; Turco, Emilio. - In: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES. - ISSN 0020-7683. - 46:(2009), pp. 4451-4477.

A numerical study on the solution of the Cauchy problem in elasticity

TURCO, Emilio
2009

Abstract

This work deals with the Cauchy problem in two-dimensional linear elasticity. The equations of the prob- lem are discretized through a standard FEM approach and the resulting ill-conditioned discrete problem is solved within the frame of the Tikhonov approach, the choice of the required regularization parameter is accomplished through the Generalized Cross Validation criterion. On this basis a numerical experimen- tation has been performed and the calculated solutions have been used to highlight the sensitivity to the amount of known data, the noise always present in the data, the regularity of boundary conditions and the choice of the regularization parameter. The aim of the numerical study is to implicitly device some guidelines to be used in the solution of this kind of problems.
A numerical study on the solution of the Cauchy problem in elasticity / Bilotta, A; Turco, Emilio. - In: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES. - ISSN 0020-7683. - 46:(2009), pp. 4451-4477.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/79520
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