Naslov
Fracture model based on lattice with embedded strong discontinuities and appropriate choice of discrete elastic parameters

Autori
Nikolić, Mijo

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
COMPLAS 2021 - XVI International conference on computational plasticity. Fundamentals and / Oñate, Eugenio ; Peric, Djordje ; Chiumenti, Michele ; de Souza Neto, Eduardo - , 2021

Skup
XVI International Conference on Computational Plasticity: Fundamentals and Applications (COMPLAS 2021)

Mjesto i datum
Barcelona, Španjolska, 07.09.2021. - 09.09.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
discrete lattice model ; softening

Sažetak
This work presents the discrete lattice model of Timoshenko beams for fracture propagation in quasi static and dynamic situations. The embedded strong discontinuities are used for crack representation in a cohesive and gradual crack faces separation way. The parameters used for such softening response are ultimate stress level, as well as fracture energy. The discrete parameters related to elastic response are computed in order to match the continuum response with a discrete model, with the ultimate goal of maintaining the uniform deformation field (and stress field) of the lattice. The presented model captures the best possible properties from discrete models and their advantages to capture the crack propagation, while also alleviates their shortcomings related to the non-uniform straining. The model capabilities are shown on several fracture propagation examples, where energy components and the dissipated fracture energy are plotted in time.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA