Abstract
Tools in the form of methodology and software for the numerical study of the thermal-elastoplastic state of coke-pitch composites using the example of isostatic graphite production technology have been developed. A closed mathematical formulation and a method for numerically solving an elastoplastic problem with isotropic hardening based on an implicit inverse mapping algorithm are considered. Using the finite element method, the corresponding program code was developed and verified. A comparison of the results with the data of numerical analysis obtained using the ANSYS Mechanical APDL software product shows that, with isotropic hardening, the maximum discrepancy does not exceed 1.13%, and for ideal plasticity, it is no more than 3.58%. The calculations of the thermal-elastoplastic behavior of the coke-pitch composite in the technological stage of the production of isostatic graphite blanks are performed. It is shown that in the case of non-compliance with the temperature regimes at the initial stages of roasting, plastic deformations occur in the isostatic graphite blanks, which lead to cracking and deterioration of the uniformity of the physical properties of the finished products.
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Karvatskii, A., Mikulionok, I., Leleka, S., Solovei, V. (2020). Numerical Simulation of Elasto-Plastic Behavior of Isotropic Composite Materials. In: Ivanov, V., Trojanowska, J., Pavlenko, I., Zajac, J., Peraković, D. (eds) Advances in Design, Simulation and Manufacturing III. DSMIE 2020. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-50794-7_48
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DOI: https://doi.org/10.1007/978-3-030-50794-7_48
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