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Optimisation fiabiliste de la conception et de la maintenance des stuctures

Younes Aoues

To cite this version:

Younes Aoues. Optimisation fiabiliste de la conception et de la maintenance des stuctures. Génie des procédés. Université Blaise Pascal - Clermont-Ferrand II, 2008. Français. �NNT : 2009CLF21908�.

�tel-00726003�

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d'ordre :D.U. :1908

EDSPIC : 429

UNIVERSITÉ BLAISE PASCAL - CLERMONT II

ÉCOLE DOCTORALE

SCIENCES POUR L'INGÉNIEUR DE CLERMONT-FERRAND

Thèse

présentée par

Younes AOUES

Ingénieur de l'Ecole Polytechnique d'Alger

pour obtenir legrade de

Docteur d'Université

Spécialité : Génie Civil

Optimisation abiliste de la conception et de la maintenance

des structures

Soutenue publiquement le15 janvier 2008 devant le jury :

M. Jean-Louis BATOZ Universitéde Compiègne Président

M. Alain MILLARD CEAGif surYvette Rapporteur

M. Abdelkhalak EL HAMI INSA Rouen Rapporteur

M. Daniel BOISSIER UniversitéBlaise Pascal Examinateur

M. Frédéric DUPRAT INSA Toulouse Examinateur

M. Alaa CHATEAUNEUF UniversitéBlaise Pascal Examinateur

Laboratoire de Mécanique et Ingénieries (LaMI)

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Finally, the best solution should be searched by minimizing the total cost function

whichthe maintenance costs are integrated. TheReliability-BasedLife Cycle Cost Opti-

mization(RBLCCO) aimsto ndthe best designand maintenance planning. Acommon

procedure consists inseparating the design and the maintenance. However, for some en-

gineering systems, the sequential searchof design andmaintenance costs maynot lead to

globally optimal costs, due to interaction between the dierent costs. In this work, the

design and maintenance optimization are coupled, which a comparative study between

the twoapproaches of theRBLCCO (sequentialandcoupled) shows theinterestofsimul-

taneously searchof the optimaldesignand maintenance policy, which thebest lowercost

is obtained.

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