Modeling of the Process of Deformation of Inhomogeneous Material in the Closed Die

Abstract:

The issues of physical modeling of the processes of deforming inhomogeneous materials are extremely relevant in the development of adequate models of technological processes for the processing of materials by pressure. The object of research is the technology of draft of inhomogeneous material in a closed die. The subject of the research is the processes of evolution of the structure of inhomogeneous material during its deformation. The paper presents a technique that allows to fix the dynamics of compaction of a inhomogeneous flat sample in the process of its draft in a closed die at different rates of deformation and contact conditions in the system «sample – matrix – punch». As a result of the experimental study of the process of draft of inhomogeneous material in a closed matrix, the data characterizing the pore formation and distribution of forces depending on the friction factor, the deformation rate and the degree of deformation are obtained. A method of estimating changes in the geometric parameters of pores in the deformation process is proposed, which allows to determine the front of the material compaction. The obtained experimental data can be used to construct a model describing the deformation of an inhomogeneous medium taking into account the compressibility of the material.

• Periodical: Materials Science Forum (Volume 992)
• Pages: 849-856
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.992.849
• Online since: May 2020
• Authors: V.V. Chernomas, S.B. Maryin, Phyo Wai Aung*
• Keywords: Conditions of Contact of the Sample with the Matrix, Deformation, Draft, Energy Costs of the Deformation Process, Porous Flat Sample, Sealing Front

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