Ductile Damage Material Parameter Identification: Numerical Investigation - Mines Paris Accéder directement au contenu
Communication Dans Un Congrès Année : 2010

Ductile Damage Material Parameter Identification: Numerical Investigation

Résumé

Calibration of damage parameters is an important issue for the use of damage laws, and particularly for industrial manufacturing processes. This paper deals with an adapted procedure to identify Lemaitre damage parameters using tensile tests. An adapted objective function is built, and Efficient Global Optimisation (EGO) algorithm is chosen to solve the minimisation problem. This procedure is investigated by constructing a landscape of the objective function. This global sensitivity analysis enables to compare different solutions. The sensitivity analysis exhibits some pathological identification issues: multiple extrema and weak gradient. This sensitivity analysis shows some limitations of identification using load-displacement curves: In particularly the non-uniqueness of the set of parameters. The identification procedure is finally validated for an HSS S355MC steel material used in industrial joining application.
Fichier principal
Vignette du fichier
paper135_CCP93.pdf (254.58 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00685303 , version 1 (04-04-2012)

Identifiants

Citer

Émile Roux, Pierre-Olivier Bouchard. Ductile Damage Material Parameter Identification: Numerical Investigation. Tenth International Conference on Computational Structures Technology, Sep 2010, Valencia, Spain. Paper 135 - ISBN 978-1-905088-38-6, ⟨10.4203/ccp.93.135⟩. ⟨hal-00685303⟩
184 Consultations
1033 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More