20.500.12556/RUL-134587 Modelling and multi-objective optimization of elastic abrasive cutting of C45 and 42Cr4 steels Modeliranje in večciljna optimizacija rezanja jekel C45 in 42Cr4 z elastičnim abrazivnim orodjem Elastic abrasive cutting is a new high-performance method to produce workpieces made of materials of different hardness, which ensures lower wear of cut-off wheels and higher quality machined surfaces. However, the literature referring to elastic abrasive cutting is scarce; additional studies are thus needed. This paper proposes a new approach for modelling and optimizing the elastic abrasive cutting process, reflecting the specifics of its particular implementation. A generalized utility function has been chosen as an optimization parameter. It appears as a complex indicator characterizing the response variables of the elastic abrasive cutting process. The proposed approach has been applied to determine the optimum conditions of elastic abrasive cutting of С45 and 42Cr4 steels. To solve the optimization problem, a model of the generalized utility function reflecting the complex influence of the elastic abrasive cutting conditions has been developed. It is based on the findings of the complex study and modelling of the response variables of the elastic abrasive cutting process (cut-off wheel wear, time per cut, cut piece temperature, cut off wheel temperature and workpiece temperature) depending on the conditions of its implementation (compression force F exerted by the cut-off wheel on the workpiece, workpiece rotational frequency nw, cut off wheel diameter ds). By applying a genetic algorithm, the optimal conditions of elastic abrasive cutting of С45 and 42Cr4 steels: ds = 120 mm; F = 1 daN; nw = 63.7 min–1 and nw = 49.9 min–1, respectively for С45 and 42Cr4 steels, have been determined. They provide the best match between the response variables of the elastic abrasive cutting process. elastic abrasive cutting multi-objective optimization generalized utility function С45 steel 42Cr4 steel rezanje z elastičnim abrazivnim orodjem rezalni koluti večciljna optimizacija posplošena kriterijska funkcija jeklo С45 premer rezalnega koluta pritisna sila vrtilna frekvenca obdelovanca jeklo 42Cr4 true false true Angleški jezik Slovenski jezik Članek v reviji 2022-01-19 11:20:00 2022-01-19 11:20:09 2022-09-13 03:55:58 0000-00-00 00:00:00 2021 0 0 Str. 635-648 no. 12 Vol. 67 Dec. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.9 0039-2480 10.5545/sv-jme.2021.7327 94050307 RAZ_Stefanova_Aleksandrova_Irina_2021.pdf RAZ_Stefanova_Aleksandrova_Irina_2021.pdf 1 3F3C91B930B61E37CADDCCB159BD32C7 b840ef964f401023a6e38f3712e8be297fdb69a06106401100f30311b4bcb2e7 43e32841-7911-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153092 https://www.sv-jme.eu/sl/article/modelling-and-multi-objective-optimization-of-elastic-abrasive-cutting/ 1 31c2a7a3-7911-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153091 Fakulteta za strojništvo Strojniški vestnik 0 0 0