IDENTIFICATION OF THE PARAMETERS OF THE ABS-PLASTIC MODEL OBTAINED BY THE METHOD OF FLARE SURFACE 

Kartashova Ekaterina Dmitryevna, postgraduate student, Penza State University, E-mail: katrina89@yandex.ru
Muyzemnek Alexander Yuryevich, doctor of technical sciences, professor, head of sub-department of theoretical and applied mechanics and graphics, Penza State University, E-mail: muyzemnek@yandex.ru 

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Background. Stable trends in the development of additive technologies are the annual growth in the volume of products produced with their use and the increase in the share of final products in the total volume of products due to a decrease in the share of prototypes. New additive technologies are emerging and improving. There are more productive, cheap and affordable 3D-printing devices, providing fast stable production of highquality and cheap products. Constantly there are new materials for 3D-printing. One of the reasons restraining the wider use of additive technologies is often the relatively low characteristics of the mechanical properties of materials formed with 3D printing. First of all, they are characteristics of resistance to deformation and destruction. The aim of the work is to study the resistance to deformation and destruction of ABS plastic obtained by the method of layer-by-layer fusing and identification of the parameters of its model. The model of the material is the Leonov-EPG model.
Materials and methods. As the test material selected ABS-plastic, produced by the company REC. When studying the resistance to deformation and destruction of ABS plastic, the method of laboratory testing of materials for stretching was chosen, when identifying the parameters of the material model – methods numerical methods for solving optimization problems implemented in the CAE-system.
Results. The diagrams of deformation of ABS plastic obtained by the method of layer-by-layer fusion are constructed, the parameters of the Leonov-EPG model are identified.
Conclusions. A feature of the resistance to stretching of ABS plastic, obtained by the method of layer-bylayer fusion, is that after the first peak of stresses, it softens and then strengthens until it breaks down. This behavior can be described using the Leonov-EPG model. 

ABS plastic, 3D-printing, resistance to deformation and destruction, Leonov-EPG model, identification, parameters