PSI - Issue 40

ScienceDirect Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com Procedia Structural Integrity 40 (2022) 461–469

www.elsevier.com/locate/pr ocedia www.elsevier.com/locate/pr ocedia

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics of Materials and Structures. Abstract The paper presents the results of simulating the hydro-mechanical pressing of bimetallic composite billets. Using mathematical modeling and a simulation experiment, the researchers studied the influence of the main process parameters, including draw forming, the cone angle of the working die, and the conditions of contact friction, on the strain heterogeneity, damage to the fibers (cores), and the extrusion stress. A method and an expert system were developed that made it possible to carry out a computational experiment and a multi-criteria choice of rational values of the technological experiment using a genetic algorithm. The results of the study can be used to improve the industrial production of multi-core bimetallic wires for electrical purposes. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. Keywords: Pressing of composite; semi-liquid friction; simulation; computational experiment; expert system; multi-criteria optimization; genetic algorithm Nomenclature ∗ effective value of the yield strength of the composite T intensity of tangential stresses Λ plasticity diagram Λ degree of deformation 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Stru tures А pplication of a genetic algorithm for multi-criteria optimization of composite pressing Aleksandr Zalazinskiy, Dmitriy Dvoynikov, Vladimir Titov* Institute of Engineering Science, Ural Branch of RAS, 34, Komsomolskaya St., Ekaterinburg, 620049, Russian Federation Abstract The paper presents the results of simulating the hydro-mechanical pressing of bimetallic composite billets. Using mathematical modeling and a simulation experiment, the researchers studied the influence of the main proce s parameter , including draw forming, the cone angle f the working di , and the conditions of contact friction, on the strain heterog neity, damage to the ibers (cores), a d the xtrusion st ess. A method and an expert system were developed that mad it possible to c rry u a computational experim n and a multi-criteria choice of rational values of the technological experiment using a genetic algorithm. The results of he study can be us d to improve the ndustri produc ion of multi-core bim tallic wires for electrical purposes. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der re ponsibility of scientific committe of the15th Int rnational C nference o Mechanics, Resource and Diagnostics of Materials and S ructur s. Keyw rds: Pressing of composite; semi-liquid friction; simulation; computational experiment; expert system; multi-criteria optimization; genetic algorithm Nomenclature ∗ effective value of the yield strength of the composite T int nsity of tangential stresses Λ plasticity diagram Λ degree of efor ation 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures А pplication of a genetic algorithm for multi-criteria optimization of composite pressing Aleksandr Zalazinskiy, Dmitriy Dvoynikov, Vladimir Titov* Institute of Engineering Science, Ural Branch of RAS, 34, Komsomolskaya St., Ekaterinburg, 620049, Russian Federation

* Corresponding author. Tel.: +7-343-375-3579. E-mail address: tit@imach.uran.ru * Corresponding author. Tel.: +7-343-375-3579. E-mail ad ress: ti @imach.uran.ru

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der re ponsibility of t scientific committe of the15th Int rnational Confe ence o Mechanics, Resource and Diagnostics of Mate ials and Structures.

of Materials and Structures. 10.1016/j.prostr.2022.04.063