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Naslov:Modelling of fatigue microfracture in porous sintered steel using a phase-field method
Avtorji:ID Tomić, Zoran (Avtor)
ID Jarak, Tomislav (Avtor)
ID Lesičar, Tomislav (Avtor)
ID Gubeljak, Nenad (Avtor)
ID Tonković, Zdenko (Avtor)
Datoteke:.pdf Tomic-2023-Modelling_of_Fatigue_Microfracture.pdf (8,81 MB)
MD5: 17B8C8B4D9A3A2A32251AD9DF38F4721
 
URL https://doi.org/10.3390/ma16114174
 
Jezik:Angleški jezik
Vrsta gradiva:Znanstveno delo
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Opis:Porosity in sintered materials negatively affects its fatigue properties. In investigating its influence, the application of numerical simulations reduces experimental testing, but they are computationally very expensive. In this work, the application of a relatively simple numerical phase-field (PF) model for fatigue fracture is proposed for estimation of the fatigue life of sintered steels by analysis of microcrack evolution. A model for brittle fracture and a new cycle skipping algorithm are used to reduce computational costs. A multiphase sintered steel, consisting of bainite and ferrite, is examined. Detailed finite element models of the microstructure are generated from high-resolution metallography images. Microstructural elastic material parameters are obtained using instrumented indentation, while fracture model parameters are estimated from experimental S–N curves. Numerical results obtained for monotonous and fatigue fracture are compared with data from experimental measurements. The proposed methodology is able to capture some important fracture phenomena in the considered material, such as the initiation of the first damage in the microstructure, the forming of larger cracks at the macroscopic level, and the total life in a high cycle fatigue regime. However, due to the adopted simplifications, the model is not suitable for predicting accurate and realistic crack patterns of microcracks.
Ključne besede:sintered steel, microcracks, fatigue, phase-field method, porosity
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Poslano v recenzijo:30.04.2023
Datum sprejetja članka:30.05.2023
Datum objave:03.06.2023
Založnik:MDPI
Leto izida:2023
Št. strani:Str. 1-22
Številčenje:Letn. 16, Št. 11, št. članka 4174
PID:20.500.12556/DKUM-87032 Novo okno
UDK:621.9:539.3
COBISS.SI-ID:154724355 Novo okno
DOI:10.3390/ma16114174 Novo okno
ISSN pri članku:1996-1944
Datum objave v DKUM:09.02.2024
Število ogledov:87
Število prenosov:7
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Ostalo
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Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
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Gradivo je del revije

Naslov:Materials
Skrajšan naslov:Materials
Založnik:Molecular Diversity Preservation International
ISSN:1996-1944
COBISS.SI-ID:33588485 Novo okno

Gradivo je financirano iz projekta

Financer:HRZZ - Croatian Science Foundation
Številka projekta:PZS-1 2019-02-4177
Naslov:Multiscale Numerical Modelling and Experimental Investigation of Aging Processes in Sintered Structural Components

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:03.06.2023

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:sintrano jeklo, mikrorazpoke, utrujanje, metoda faznega polja, poroznost


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