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Thermo-mechanical multiscale modeling in plasticity of metals


Munjas, Neven; Čanađija, Marko; Brnić, Josip
Thermo-mechanical multiscale modeling in plasticity of metals // Proceedings of the 8th International Congress of Croatian Society of Mechanics / Kožar, Ivica ; Bićanić, Nenad ; Jelenić, Gordan ; Čanađija, Marko (ur.).
Opatija, Hrvatska, 2015. (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
Thermo-mechanical multiscale modeling in plasticity of metals

Autori
Munjas, Neven ; Čanađija, Marko ; Brnić, Josip

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 8th International Congress of Croatian Society of Mechanics / Kožar, Ivica ; Bićanić, Nenad ; Jelenić, Gordan ; Čanađija, Marko - Opatija, Hrvatska, 2015

ISBN
978-953-7539-20-7

Skup
8th International Congress of Croatian Society of Mechanics

Mjesto i datum
Opatija, Hrvatska, 29.09.-02.10.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Višerazinsko modeliranje; računalna homogenizacija prvog reda; metoda konačnih elemenata
(Multiscale modeling; first-order computational homogenization; finite element method)

Sažetak
This paper deals with thermoplastic multiscale modeling in the framework of small strains plasticity theory using first order computational homogenization technique. The concept of the analysis done at the micro and macro level is based on coupling of state variables between the scales. Global periodicity assumption of the micro level imposed the definition of the representative volume element (RVE) and the formulation of the boundary value problem (BVP). BVP at micro level has to be solved in order to give the constitutive relationship between stress and strain in each integration point of the macro level model. The tangent stiffness operator is formulated using static reduction method based on condensation of the micro level properties. Coupled thermo-mechanical analysis at the macro level it is done simultaneously using different numerical algorithms. The numerical procedure is developed for two-dimensional problems and it is verified on one example.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti



POVEZANOST RADA


Projekt / tema
13.09.1.1.01
HRZZ-IP-2013-11-6876 - Procjena ponašanja konstrukcija u graničnim uvjetima rada (Josip Brnić, )

Ustanove
Tehnički fakultet, Rijeka