Naslov
On modal analysis of phase-field fracture models

Autori
Jukić, Krešimir ; Jarak, Tomislav ; Tonković, Zdenko ; Lorenzana, Anatolin

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

Izvornik
CMMoST 2021. Full Papers / - , 2021, 300-320

Skup
6th International Congress on Mechanical Models in Structural Engineering (CMMoST 2021)

Mjesto i datum
Valladolid, Španjolska, 01.12.2021. - 03.12.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
phase-field, brittle fracture, dynamic response, modal analysis
(metoda faznog polja, krhki lom, dinamički odziv, modalna analiza)

Sažetak
In this work, the modal response of a phase-field model of a damaged structure is performed and the influence of various phase-field model parameters on the dynamic response is analysed. Instead of analysing hypothetical cracks, here the crack geometries of the damaged body are predicted by a quasi-static crack propagation simulation by means of an adaptive phase-field method, performed prior to the modal analyses. The modal analyses are performed with respect to the damaged configurations obtained during the fracture simulations. The natural frequencies and corresponding mode shapes of a plate modelled as a tree-dimensional body with a crack has been inspected. Various modifications of the phase field fracture model are used in the modal analysis. The influence of element size and length scale are also studied. From the results, the recommendations for performing the modal analysis of phase-field models are drawn.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA