Titolo:  Comparing two different approaches to the identification of the plastic parameters of metals in post-necking regime
Autori: 
Data di pubblicazione:  2010
Autori:  Baldi A; Medda A; Bertolino F
Titolo del libro:  SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2010
ISBN:  978-161738690-9
Editore:  Curran Associates
Sezione:  contributo
Volume:  3
Pagina iniziale:  2345
Pagina finale:  2350
Numero di pagine:  6
Codice identificativo Scopus:  2-s2.0-78049448949
Revisione (peer review):  Sì, ma tipo non specificato
Nome del convegno:  SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2010
Periodo del convegno:  June 7-10, 2010
Luogo del convegno:  Indianapolis, Indiana, USA
Abstract:  In the past 20 years the growing computation power availability encouraged experimental mechanics specialists to couple full field measurements with FE methods to raise the so called hybrid experimental-numerical methods. A typical example is the identification of the plastic parameters of metals starting from experimental data. In this work a comparison of two different inverse approaches is presented. A global method, called Kali, identifies the parameters of a plastic law (e.g. Ramberg-Osgood, Hollomon,...) fitting the global experimental data (load, clip-gauge) with FE results obtained using the trial parameters. Instead a full field method, called PlastFemDIC, prescribes DIC measured displacement data of the specimen surface as well as the global ones. To judge the best approach, the silhouette of a round axial-symmetric specimen is compared at various load levels with the FEM results obtained with the parameters identified by the global and local approaches.
Tipologia: 4.1 Contributo in Atti di convegno

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