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Developments towards a multiscale meshless rolling simulation system
ID Hanoglu, Umut (Avtor), ID Šarler, Božidar (Avtor)

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Izvleček
The purpose of the present paper is to predict the grain size of steel during the hot-rolling process. The basis represents a macroscopic simulation system that can cope with temperatures, stresses and strains of steel in a complete continuous rolling mill, including reversible pre-rolling and finishing rolling with several tenths of rolling passes. The grain size models, newly introduced in the present paper, are one-way coupled to the macro-scale calculations performed with the slice model assumption. Macroscale solution is based on a novel radial basis function collocation method. This numerical method is truly meshless by involving the space discretization in arbitrarily distributed nodes without meshing. A new efficient node generation algorithm is implemented in the present paper and demonstrated for irregular domains of the slice as they appear in different rolling passes. Multiple grain size prediction models are considered. Grain size prediction models are based on empirical relations. Austenite grain size at each rolling pass as well as the ferrite grain size at the end of rolling are predicted in this simulation. It is also shown that based on the rolling schedule, it is highly likely that recrystallization takes place at each pass throughout a continuous rolling mill. The simulation system is coded as a user-friendly computer application for industrial use based on programming language C# and an open source developer platform NET and runs on regular personal computers the computational time for a typical rolling simulation is usually less than one hour and can thus be straightforwardly used to optimize the rolling mill design in a reasonable time.

Jezik:Angleški jezik
Ključne besede:meshless methods, radial basis functions, hot rolling, steel, recrystallization, austenite grain size, ferrite grain size
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2021
Št. strani:25 str.
Številčenje:Vol. 14, iss. 15, art. 4277
PID:20.500.12556/RUL-136000 Povezava se odpre v novem oknu
UDK:519.6:621.771.2:669.14
ISSN pri članku:1996-1944
DOI:10.3390/ma14154277 Povezava se odpre v novem oknu
COBISS.SI-ID:72029955 Povezava se odpre v novem oknu
Datum objave v RUL:06.04.2022
Število ogledov:486
Število prenosov:109
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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 Povezava se odpre v novem oknu

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:01.08.2021

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:brezmrežne metode, radialne bazne funkcije, vroče valjanje, jeklo, rekristalizacija, velikost avstenitnih zrn, velikost feritnih zrn

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0162
Naslov:Tranzientni dvofazni tokovi

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:L2-2609
Naslov:Simulacije vročega valjanja za proizvodnjo jekel vrhunskih kvalitet

Financer:Drugi - Drug financer ali več financerjev
Program financ.:Štore-Steel Company

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