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<article xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="https://jats.nlm.nih.gov/publishing/1.1/" xml:lang="ru" article-type="research-article" dtd-version="1.1" specific-use="eps-0.1">
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				<journal-id journal-id-type="publisher-id">asa</journal-id><journal-title-group>
			<journal-title xml:lang="ru">Строительство и техногенная безопасность</journal-title></journal-title-group>			<issn pub-type="ppub">2413-1873</issn>			<publisher><publisher-name>КФУ им. В.И. Вернадского</publisher-name></publisher>
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			<article-id pub-id-type="publisher-id">170</article-id>
			<article-categories><subj-group xml:lang="en"><subject>Engineering support</subject></subj-group><subj-group xml:lang="ru"><subject>Инженерное обеспечение</subject></subj-group></article-categories>
			<title-group><article-title xml:lang="ru">МОДЕЛИРОВАНИЕ КАНАЛОВЫХ ПОВЕРХНОСТЕЙ И ТЕЛ В ТОЧЕЧНОМ ИСЧИСЛЕНИИ</article-title><trans-title-group xml:lang="en"><trans-title>MODELING OF CHANNEL SURFACES AND SOLIDS IN THE POINT CALCULUS</trans-title></trans-title-group></title-group>
			<contrib-group content-type="author">
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<name-alternatives>					<name>
						<surname>Конопацкий</surname>
						<given-names>Е. В.</given-names>
					</name>
					<name xml:lang="en">
						<surname>Konopatskiy</surname>
						<given-names>E. V.</given-names>
					</name>
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				<contrib contrib-type="author">
<name-alternatives>					<name>
						<surname>Бездитный</surname>
						<given-names>А. А.</given-names>
					</name>
					<name xml:lang="en">
						<surname>Bezditnyi</surname>
						<given-names>A. A.</given-names>
					</name>
</name-alternatives>					<xref ref-type="aff" rid="aff-2"/>
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			<institution content-type="orgname">Донбасская национальная академия строительства и архитектуры</institution>
			<institution content-type="orgname" xml:lang="en">Donbas national Academy of civil engineering and architecture</institution>
			</aff>
			<aff id="aff-2">
			<institution content-type="orgname">Севастопольский филиал ФГБОУВО «Российский экономический университет имени Г.В. Плеханова»</institution>
			<institution content-type="orgname" xml:lang="en">Sevastopol branch of «Plekhanov Russian University of Economics»</institution>
			</aff>
			<pub-date date-type="pub" publication-format="electronic">
				<day>19</day>
				<month>05</month>
				<year>2022</year>
			</pub-date>
				<issue seq="3">24(76)</issue><issue-id>72</issue-id><fpage>97</fpage>
				<lpage>106</lpage>
			<permissions>
				<copyright-statement>Copyright (c) 2022 Строительство и техногенная безопасность</copyright-statement>
				<copyright-year>2022</copyright-year>
				<copyright-holder>Строительство и техногенная безопасность</copyright-holder>
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			<self-uri>https://www.stroyjurnal-asa.ru/index.php/asa/article/view/170</self-uri>
			<abstract><p>В статье предложен и реализован подход к геометрическому моделированию каналовых поверхностей в точечном исчислении путём определения подвижной плоскости сечения, перпендикулярной к направляющей линии каналовой поверхности. Для этого с помощью построения нормали и бинормали к касательной сформирован подвижный симплекс трёхмерного пространства, сопровождающий направляющую кривую, который является аналогом трёхгранника Френе в точечном исчислении. Определение нормали и бинормали выполнено инструментами точечного исчисления с использованием метрического оператора трёх точек и точки выхода из плоскости, которые являются аналогами соответственно скалярного и векторного произведений векторов. Приведены примеры моделирования каналовых поверхностей с алгебраической плоской и трансцендентной пространственной кривой. В качестве образующих приведены примеры использования эллипса, замкнутой кривой типа «синусоида» и замкнутого обвода 1-го порядка гладкости. В части разработки математического аппарата для построения высокопроизводительных систем геометрического твердотельного моделирования выполнено определение каналовых тел, имеющих как постоянную, так и переменную функционально управляемую толщину. В данном случае реализован геометрический алгоритм моделирования каналовых поверхностей и тел, который аналитически описывается последовательностью точечных уравнений. Для его компьютерной реализации в виде вычислительного алгоритма параллельно с точечными уравнениями приведены параметрические уравнения, полученные посредством покоординатного расчёта.</p></abstract><trans-abstract xml:lang="en"><p>The paper proposes and implements an approach to geometric modeling of channel surfaces in the point calculus by determining the movable plane of section perpendicular to the guiding line of the channel surface. For this purpose, by constructing a normal and a binormal to the tangent, a movable simplex of three-dimensional space accompanying the guiding curve, which is analogous to the Frenet trihedron in the pointwise calculus, is formed. The normal and binormal are defined by the tools of the point calculus using the metric operator of three points and the exit point from the plane, which are analogs, respectively, of scalar and vector products of vectors. Examples of modeling channel surfaces with algebraic planar and transcendental spatial curve are given. Examples of using an ellipse, a closed curve of "sinusoidal" type, and a closed bypass of the 1st order of smoothness are given as formants. In the part of developing a mathematical apparatus for constructing high-performance geometric solid modeling systems, the definition of channel solids having both constant and variable functionally controllable thicknesses is performed. Here, a geometric algorithm for modeling channel surfaces and solids that is described analytically by a sequence of point equations is implemented. For its computer implementation in the form of a computational algorithm, parametric equations obtained by means of a subordinate calculation are given in parallel with the point equations.</p></trans-abstract><kwd-group xml:lang="en"><title>Keywords</title><kwd>geometric modeling</kwd><kwd>point calculus</kwd><kwd>metric operator</kwd><kwd>closed curves</kwd><kwd>channel surfaces</kwd><kwd>channel bodies</kwd></kwd-group><kwd-group xml:lang="ru"><title>Ключевые слова</title><kwd>геометрическое моделирование</kwd><kwd>точечное исчисление</kwd><kwd>метрический оператор</kwd><kwd>замкнутые кривые</kwd><kwd>каналовые поверхности</kwd><kwd>каналовые тела</kwd></kwd-group><counts><page-count count="10"/></counts>
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