Jérôme Fehrenbach ; Mohamed Masmoudi - An introduction to the topological asymptotic expansion with examples

arima:1866 - Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées, October 20, 2006, Volume 5, Special Issue TAM TAM'05, november 2006 - https://doi.org/10.46298/arima.1866
An introduction to the topological asymptotic expansion with examples

Authors: Jérôme Fehrenbach ; Mohamed Masmoudi

To find an optimal domain is equivalent to look for Its characteristic function. At first sight this problem seems to be nondifferentiable. But it is possible to derive the variation of a cost function when we switch the characteristic function from 0 to 1 or from 1 to 0 a small area. Classical and two generalized adjoint approaches are considered in this paper. Their domain of validity is given and Illustrated by several examples. Using this gradient type Information, It is possible to build fast algorithms. Generally, only one Iteration Is needed to find the optimal shape.


Volume: Volume 5, Special Issue TAM TAM'05, november 2006
Published on: October 20, 2006
Submitted on: April 5, 2006
Keywords: inverse problem, Lagrange operator, adjoint meth,Topological sensitivity, shape optimization,Sensibilité topologique,optimisation de forme,problème inverse,opérateur de Lagrange,méthodes ajointes,[MATH] Mathematics [math],[INFO] Computer Science [cs]


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