20.500.12556/RUL-136000
Developments towards a multiscale meshless rolling simulation system
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.
meshless methods
radial basis functions
hot rolling
steel
recrystallization
austenite grain size
ferrite grain size
brezmrežne metode
radialne bazne funkcije
vroče valjanje
jeklo
rekristalizacija
velikost avstenitnih zrn
velikost feritnih zrn
true
false
true
Angleški jezik
Slovenski jezik
Članek v reviji
2022-04-06 09:47:42
2022-04-06 09:47:47
2022-09-15 04:13:08
0000-00-00 00:00:00
2021
0
0
25 str.
iss. 15, art. 4277
Vol. 14
2021
0000-00-00
Zaloznikova
Objavljeno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
519.6:621.771.2:669.14
1996-1944
10.3390/ma14154277
72029955
RAZ_Hanoglu_Umut_2021.pdf
RAZ_Hanoglu_Umut_2021.pdf
1
DF230223400B24F3F7CBB09D2B49B572
ee25d8a47391f0c231f3d4251b56418f51f88764e3ad67d9b62c5f2a931b3ff3
372c83a1-b57e-11ec-8aca-00155dcfd717
https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155384
https://www.mdpi.com/1996-1944/14/15/4277
1
cff440af-b57d-11ec-8aca-00155dcfd717
https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155383
Fakulteta za strojništvo
0
0
0