DEVELOPMENT OF A COMPUTER MODEL OF DESTRUCTION HETEROGENEOUS MATERIAL

UDC 51-74

  • Garanin Victor Nikolaevich – PhD (Engineering), Assistant Professor, the Department of Woodworking Machines and Tools. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: dosy@belstu.by

  • Unitsky Anatoly Eduardovich – PhD in Transport, General Design Engineer. Astroengineering Technologies LLC; General Design Engineer. Unitsky String Technologies, Inc. (33, Zheleznodorozhnaya str., 220089, Minsk, Republic of Belarus). E-mail: a@unitsky.com

  • Artyushevsky Sergey Vladimirovich – Deputy General Designer for Science of Unitsky String Technologies, Inc. (33, Zheleznodorozhnaya str., 220089, Minsk, Republic of Belarus). E-mail: s.artyushevskiy@unitsky.com

  • Ovsyanko Vladimir Aleksandrovich – Head of the Engineering Calculations Group. Unitsky String Technologies, Inc. (33, Zheleznodorozhnaya str., 220089, Minsk, Republic of Belarus). E-mail: v.ovsyanko@unitsky.com

  • Pronkevich Sergey Aleksandrovich – PhD (Physical and Mathematical), Assistant Professor, the Department of Bio- and Nanomechanics. Belarusian State University (4, Nezavisimosti Ave, 220030, Minsk, Republic of Belarus). E-mail: pronkevichsa@bsu.by

DOI: https://doi.org/10.52065/2520-6141-2022-254-1-28-37

Key words: destruction, speed, energy, bullet, concrete, finite element method.

For citation: Garanin V. N., Unitsky A. E., Artyushevsky S. V., Ovsyanko V. A., Pronkevich S. A. Development of a computer model of destruction heterogeneous material. Proceedings of BSTU, issue 3, Physics and Mathematics. Informatics, 2022, no. 1 (254), pp. 28–37 (In Russian). DOI: https://doi.org/10.52065/2520-6141-2022-254-1-28-37.

Abstract

In the presented work, attention is paid to the problem of increasing the efficiency of modeling the destruction processes of various inhomogeneous materials. In particular, the main emphasis is placed on the study of the process of destruction of concrete. Various methods for modeling the interaction of materials with a description of their advantages and disadvantages are presented. For the basis of this work, the Lagrange method was chosen, which, according to the author, is the most appropriate. The use of special computer models proposed in the work in the ANSYS/LS-DYNA engineering analysis package makes it possible to solve with a high degree of accuracy the problems of predicting the processes of high-speed destruction of complex objects. The use of the Lagrange method makes it possible to reduce the requirements for computing equipment and improve the accuracy of calculations through the use of special modeling of the inhomogeneity of the medium. In order to confirm the reliability of the obtained data of computer models, tests were carried out at a special test site, where concrete samples were subjected to high-speed impact from projectiles (bullets). The study showed that the results of numerical experiments on the bullet resistance of concrete samples with explicit modeling of granite filler are close to the results of full-scale tests, which confirms the relevance of the developed models and calculation methods. The results obtained make it possible to obtain reliable results when modeling the destruction of other inhomogeneous materials, such as wood with various defects.

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