Механики XXI веку №15 2016

202 / 457

Механики XXI веку. №15 2016 г.
202
К вопросу моделирования межатомного взаимодействия
Бондин А.В.a, Кириченко О.П.
Братский государственный университет, Макаренко, 40. Братск, 665709, Россия
a
Ключевые слова: моделирование статической структуры, металлические фазы, тип кристал-
лической решетки, атомный радиус, комбинированная электроалмазная обработка, алмазное зерно
Работа посвящена созданию статической атомной модели двух поверхностей, контактирующих при
электроалмазной обработке: алмазных зерен и шлифуемого ими материала. В центре работы стоят вопросы
компьютерной визуализации этих поверхностей на молекулярном уровне, поскольку традиционное математи-
ческое описание не обладает достаточной наглядностью для демонстрации некоторых аспектов атомисти-
ческой трибологии резания металлов с одновременно протекающими разными, по своей физической природе,
процессами. А в электроалмазной обработке сочетается воздействие одновременно нескольких процессов:
механический, электрический и электрохимический. Поэтому предлагаемая авторами методика моделирова-
ния остается единственным способом увидеть, что именно происходит на атомном уровне при резании ма-
териала алмазным зерном.
УДК 621.9.02
Ensuring high quality of surfaces of articles made of composite
materials with processing blade
Bolsheshapova A.V.а, Kirichenko O.P.b
Bratsk State University, 40 Makarenko st., Bratsk, 665709, Russian Federation
а
Keywords: structural composite materials, application area, specific properties, cutting process, re-
search perspectives
The article presents the results of studies aimed to use polymer composites in mechanical engineering instead
of the conventional construction materials, it is noted that the performance usually depends on the tool’s operability
and is not the only parameter determining the effective processing of composite materials; this parameter is often taken
into account along with the indicators of the quality of articles surfaces made of composite materials after their ma-
chining; another one is the indicator determining the roughness of machined surfaces; the non-metallic composite ma-
terials cutting has a number of features that distinguish it from the similar metals processing; there are identified the
difficulties associated with processing composites; currently used tools and processing modes, very often, don’t provide
the required quality of products; the cutting tool wear resistance and quality requirements increase sharply; the crea-
tion possibility of composite materials products using the cutting tool; and, as well, it describes the prospects for fur-
ther research development.
Modern technological progress requires that the applied engineering materials have high
performance properties. Existing materials, including metals and their alloys, are not satisfied to meet the
strength, wear resistance, durability requirements. The composite materials appeared as some substitutes to
traditional ones. The advantages of composites are the high specific strength and elastic properties,
aggressive chemical environment resistance, low thermal and electrical conductivity, of good tribological
properties and environmental friendliness. All these properties let apply them in various industries.
A large variety of structures made of composite materials, modern technologies and their primary
modes result in the creation of new composite material that requires individual processing approach taking
into account the inherited signs of the primary technologies, when choosing its further machining mode, and
ensuring the optimum properties suitable for the intended operational conditions. The diversity of the
produced composite materials creates lot of problems and requires to solve the technological tasks connected
with their machining [1].
One of the main problems connected with the blade processing is that the products made of compos-
ite materials are of high surface quality combined with maximum performance productivity that determines