PSI - Issue 40

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Procedia Structural Integrity 40 (2022) 70–74

15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures Influence of the packing and compaction parameters of spherical waxy elements on the stress-strain state of the compact 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Stru tures Influence of the packing and compaction parameters of spherical waxy elements on the stress-strain state of the compact

Nina A. Bogdanova, Sergey G. Zhilin, Oleg N. Komarov* Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences. FEB RAS, Metallurgov st.,1, Komsomlsk-na-Amure, 681005, Russia Nina A. Bogdanova, Sergey G. Zhilin, Oleg N. Komarov* Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences. FEB RAS, Metallurgov st.,1, Komsomlsk-n -Amure, 681005, Russia

© 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 Obtaining predictable characteristics for complex-geometry products made from dissimilar-material powder compositions used for lost-wax molding allows substantially expanding the applicability of special investment-casting methods. It has been established that no distribution of properties over the finished product is achieved when molding complex-shape compacts from a mixture of waxy and water-soluble components. The problem of elastic response of the compacted material of such nature is solved by means of a material experiment which allows for determining the influence of the initial packing and compaction parameters of spherical waxy elements on the stress-strain state of the compact. The paper presents the research findings in the form of empirical third order polynomial of stress-strain relations in powder bodies, considering various cases of positioning of deformable plastic and elastic elements. © 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: waxy elements; stress-strain state; compaction parameters; packing parameters 1. Introduction The processes of molding of metal products characterized by high dimensional and geometric accuracy and used for the needs of mechanical engineering are usually energy- and resource-consuming, which makes the presence of Abstract Obtaining predictable characteristics for complex-geometry products made from dissimilar-material powder compositions used for lost-wax molding allows substantially expanding the applicability of special nvest ent-c sting meth ds. It has be n establi hed that no distribution of properties over the finis d roduct is achieved when molding complex-shape compacts from a mixture of w xy and water-soluble components. The problem f elastic response of the compacted material of such nature is solved by means of a materia experi ent which allows for determin ng the influence of the initial packing and ompaction parameters of spheric l waxy el ments o the stress-strain state of the compact. Th paper pr se ts the research findings in the fo m of mpirical third order polynomial of stress- train relations in powder bodies, considering various cases of pos tion g of deformable lastic and elastic elements. © 2022 The Au hors. 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. Keywords: waxy elements; stress-strain state; compaction parameters; packing parameters 1. Introduction The processes of molding of metal products characterized by high dimensional and geometric accuracy and used for the needs of mechanical engineering are usu lly energy- and resource-c sumin , which makes the presence f

* Corresponding author. Tel.: +7-421-754-9539; fax: +7-421-754-9539. E-mail address: joyful289@nbox.ru * Corresponding author. Tel.: +7-421-754-9539; fax: +7-421-754-9539. E-mail address: joyful289@nbox.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, 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 responsibility of t scientific committe of the15th Int rnational C ference o 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 under responsibility of the scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics

of Materials and Structures. 10.1016/j.prostr.2022.04.008