Developments towards a multiscale meshless rolling simulation system

Hanoglu, Umut (avtor), Šarler, Božidar (avtor)

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
• UDK: 519.6:621.771.2:669.14
• ISSN pri članku: 1996-1944
• DOI: 10.3390/ma14154277
• COBISS.SI-ID: 72029955
• Datum objave v RUL: 06.04.2022

Gradivo je del revije

• Naslov: Materials
• Skrajšan naslov: Materials
• Založnik: MDPI
• ISSN: 1996-1944
• COBISS.SI-ID: 33588485

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