2022, Vol. 7, No. 3. - go to content...

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Karabanov P.S., Kostyleva V.V., Molofeeva M.A., Borozdina G.A. Modeling the mechanical strength of shoe parts from porous materials based on EVA. Journal of Clothing Science. 2022; 7(3). Available at: https://kostumologiya.ru/PDF/04TLKL322.pdf (in Russian).

Modeling the mechanical strength of shoe parts from porous materials based on EVA

Karabanov Petr Stepanovich
Russian State University named A.N. Kosygin (Technologies. Design. Art), Moscow, Russia
Novosibirsk Institute of Technology (branch), Novosibirsk, Russia
E-mail: p.s.karabanov@mail.ru

Kostyleva Valentina Vladimirovna
Russian State University named A.N. Kosygin (Technologies. Design. Art), Moscow, Russia
E-mail: kostyleva-vv@rguk.ru
RSCI: https://elibrary.ru/author_profile.asp?id=353612

Molofeeva Maria Alexandrovna
Russian State University named A.N. Kosygin (Technologies. Design. Art), Moscow, Russia
Novosibirsk Institute of Technology (branch), Novosibirsk, Russia
E-mail: molofeeva.masha@mail.ru

Borozdina Galina Alexandrovna
Russian State University named A.N. Kosygin (Technologies. Design. Art), Moscow, Russia
Novosibirsk Institute of Technology (branch), Novosibirsk, Russia
E-mail: galyaborozdina@yandex.ru

Abstract. It is shown that porous shoe materials based on EVA have a number of advantages over monolithic ones (reduction in material consumption, lightness of products, high heat-shielding properties). However, with a decrease in the density of the material, their mechanical characteristics decrease, which, among other things, are determined by the technological modes of molding the product. The paper proposes a model for the influence of mold temperature and vulcanization duration on the mechanical strength of molded products. Modeling was carried out on the basis of mathematical methods of planning and analysis of the experiment, for which test plates were formed under various modes according to the planning matrix. The simulation results are presented in the form of geometric images of the influence of molding modes on the mechanical strength of products, and curves of equal strength values. The developed model shows that with a certain ratio of injection molding modes, it is possible to obtain products of maximum strength. A nomogram has been proposed for the practical selection of molding modes that provide the specified strength indicators for products and an acceptable duration of vulcanization. In this case, the choice of molding modes can be carried out taking into account the requirements for the productivity of the process of manufacturing products.

Keywords: material based on EVA; expansion factor; mechanical strength; strength model; molding modes; nomogram

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