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On the Scale-Transition in Multiscale Modeling of Ductile Damage (CROSBI ID 654796)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Lesičar, Tomislav ; Sorić, Jurica ; Tonković, Zdenko On the Scale-Transition in Multiscale Modeling of Ductile Damage // Proceedings of the 16th International Conference on Fracture and Damage Mechanics / Mariano, P. M. ; Baragetti, S. ; Casavola, M. et al. (ur.). Firenza : München: Trans Tech Publications, 2017. str. 226-230 doi: 10.4028/www.scientific.net/KEM.754.381

Podaci o odgovornosti

Lesičar, Tomislav ; Sorić, Jurica ; Tonković, Zdenko

engleski

On the Scale-Transition in Multiscale Modeling of Ductile Damage

The standard numerical methods cannot adequately capture damage response of ductile heterogeneous materials, since they are unable to encompass the governing microstructural mechanisms. This issue is resolved by the multiscale approach, where the coarse scale problem incorporates behavior at the lower scales. In this paper, a multiscale scheme is employed for scaling of ductile damage occurring at the microstructural level to the macrolevel. A nonlocal implicit damage model is applied on the RVE, while a scale transition is performed by means of the first-order homogenization scheme. The influence of the boundary conditions used at the microscale on the macroscale response, as well as physical consistency of the RVE mechanical behavior are tested. It has been shown that displacement boundary conditions inhibit development of the softening band inside of the RVE and induce artificial material stiffness. The derived algorithms are embedded into the finite element software ABAQUS.

heterogeneous materials, nonlocal ductile damage, computational homogenization, periodic boundary conditions

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Podaci o prilogu

226-230.

2017.

objavljeno

10.4028/www.scientific.net/KEM.754.381

Podaci o matičnoj publikaciji

Proceedings of the 16th International Conference on Fracture and Damage Mechanics

Mariano, P. M. ; Baragetti, S. ; Casavola, M. ; Pappalettere, C. ; Aliabadi, F. M. H.

Firenza : München: Trans Tech Publications

Podaci o skupu

16th International Conference on Fracture and Damage Mechanics

predavanje

18.07.2017-20.07.2017

Firenca, Italija

Povezanost rada

Strojarstvo

Poveznice