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Adjoint Shape Sensitivity Analysis for Steady Creep Torsion Problems

[+] Author and Article Information
Gustavo C. Buscaglia

Institute Balseiro and Centro Atómico Bariloche, 8400, Bariloche, Argentina

Raúl A. Feijóo, Edgardo Taroco

Laboratório National de Computação Cientifica, Rua Lauro Müller 455 - Botafogo, 22290-160, Rio de Janeiro, RJ, Brazil

Appl. Mech. Rev 50(11S), S20-S27 (Nov 01, 1997) doi:10.1115/1.3101837 History: Online April 20, 2009

Abstract

Taking the total complementary dissipation energy as the cost function and the compatibility as the state equation, the first and second order shape sensitivity analysis for steady-state creep torsion problems are presented in this paper. Using the variational formulation, the fixed domain technique and the adjoint approach, integral expressions over the domain are obtained. Moreover, a particular case with known analytical solution is analyzed in order to show the equivalence between exact differentiation and the shape sensitivity approach. Finally, this example is also used to stress that the extension of the velocity field to the interior of the domain is irrelevant.

Copyright © 1997 by American Society of Mechanical Engineers
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