Naslov
A VARIATIONALLY CONSISTENT APPROACH FOR NON-ASSOCIATIVE THERMOPLASTICITY AT FINITE STRAIN

Autori
Čanađija, Marko ; Mosler, Jörn

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

Izvornik
Computational Plasticity XI - Fundamentals and Applications / Onate, E. ; Owen, D.R.J. ; Perić, D. ; Suarez. B. - Barcelona : International Center for Numerical Methods in Engineering (CIMNE), 2011

ISBN
978-84-89925-23-6

Skup
Computational Plasticity XI - Fundamentals and Applications

Mjesto i datum
Barcelona, Španjolska, 07.09.2011. - 09.09.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Thermoelastoplasticity; variational consistent updates; cyclic plasticity

Sažetak
The present paper deals with nonisothermal plasticity at finite strain. Both isotropic and kinematic hardening are included through a non-associative model of Armstrong-Frederick-type. The model proposed in the present contribution is based on the recent works [1, 2]. Within the papers [1, 2], a variationally consistent update was proposed. This update allows computing the state of a thermomechanical solid by minimizing a certain energy potential. The non-trivial extension of [1, 2] to non-associative evolution equations was realized through the introduction of an extended principle of maximum dissipation augmented by a suitable parameterization of evolution equations. The latter formulation was recently presented in [3] within the context of isothermal plasticity. Recently, these authors have extended this approach to non-isothermal plasticity [4]. The predictive capabilities of this model are critically analyzed and demonstrated in the present contribution.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA