PROBLEMS AND PROSPECTS OF COMPUTER DESIGN OF NEW COMPOSITE MATERIALS
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PROBLEMS AND PROSPECTS OF COMPUTER DESIGN OF NEW COMPOSITE MATERIALS S. V. Panina,b,∗ , B. A. Lyukshina,c,d , and S. A. Bochkarevaa,c,∗
UDC 539.3
Abstract: Problems arising when analyzing the physical and mechanical properties of composite materials based on polymer matrices are under study. The structural features of such materials and the resulting difficulties in the development and implementation of corresponding models are discussed. A technique for determining the effective strain-strength, thermophysical, and electrophysical properties of the compositions is proposed, and a number of examples are considered. Particular attention is paid to solving computer design problems in order to determine the composition and structure of composites under specified constraints on their effective properties. Initial data for solving these problems are obtained both in field and computational experiments. Directions for further research are identified. Keywords: experiment, multicomponent polymer compositions, effective mechanical characteristics, specified properties. DOI: 10.1134/S0021894420050181 1. MODELING AND DESIGN OF MATERIALS The problem of designing materials with specified properties has always been relevant. In ancient times, this problem was solved intuitively, which resulted in such materials as adobe (a clay brick reinforced with straw) and a combination of horn and wood used to make bows. Reinforced concrete appeared later. In all cases, the combination of various materials made it possible to give a product (structure) properties that could not be obtained when its individual components were used [1]. Almost all known materials, including those considered to be homogeneous, have complex structure. Recently, the concept of multilevel modeling of materials has been developed, first described in [2, 3]. In this simulation, material properties are analyzed at different scale levels, and structural elements of corresponding size are considered at each of them. This makes it possible to eliminate a previously existing gap between methods for analyzing the properties of materials in solid state physics, which account for the crystal structure of a material, and methods for analyzing the mechanics of a deformable solid, which consider a material as a homogeneous continuous medium. This approach has various names: micromechanics, mechanics of heterogeneous media, a multiscale approach, etc. However, the most promising approach is the physical mesomechanics of materials [4], which is not limited to investigating processes at individual structural levels [5]. Already the first step in developing this scientific direction presents an explanation for a number of phenomena previously experimentally discovered during deformation of
a
Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Tomsk, 634055 Russia; ∗ [email protected]; [email protected]; ∗ [email protected]. b Tomsk Polytechnic University, Tomsk, 634050 Russia. c Tomsk State University of Control Systems and Radioelectronics, Toms
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