6 research outputs found

    Geometry, static, vibration and bucking analysis and applications to thin elliptic paraboloid shells

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    A large number of references dealing with the geometry, static, vibration and buckling analysis of elliptic paraboloid shells exist in the literature. This review work attempts to organize and summarize the extensive published literature on the basic achievements in investigations of thin-walled structures in the form of elliptic paraboloids. Possibilities of elliptic paraboloids with reference to machine-building and construction designs and to the apparatuses used in theoretical physics are briefly considered. The geometric part of the review is extended due to consideration of optimization of surface’s sizes, researches of representation of a surface on the plane and introducing bibliographic material on fractal geometry. Several existent analytical and numeral methods of calculation of the examined shells on durability give a possibility to choose one of the methods for the solution of new twodimensional or three-dimensional tasks. Geometrical researches, approximation and bending of elliptic paraboloid surfaces, research of the stress-strain state of shells by analytical and numerical methods, natural and forced vibration of a shell, forming and setting of surfaces, application of shells in the form of elliptic paraboloids are the main problems which are considered in this review. Β© Krivoshapko and Gbaguidi-Aisse

    РасчСт эллиптичСских ΡƒΠΏΡ€ΡƒΠ³ΠΈΡ… ΠΊΠ°ΠΌΠ΅Ρ€ стабилизатора давлСния ΠΏΠΎ Π΄Π΅Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΌΡƒ ΡΠΎΡΡ‚ΠΎΡΠ½ΠΈΡŽ числСнным ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ

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    The question of pressure and flow rate stabilization is particularly relevant to short pipelines systems, which have high requirements for flow rate consistency of the working fluid. At medium and high pressures (up to 100 atmospheres and higher) the pressure stabilizer with elliptical elastic chambers provides conditions for normal operation of the corresponding equipment. For proper design of the stabilizer, especially deciding question of the liquid volume which the stabilizer can accommodate, it is necessary to carry out the calculation of the elliptical shell in the deformed state. The article provides the calculation of the elliptical shell in the deformed state by step by step loading method and checking the strength conditions at each step of loading. One of the main questions of the study is the question of what maximum load can withstand elliptical chambers. In this paper, we investigate the dependence of the maximum pressure at which the unit operates in the elastic area of deformation on the of the elliptical pipe wall thickness. If harmful oscillating discharge is known we should know the liquid volume which the camera can take. The dependence of the cross-sectional area increase coefficient on the thickness of the pipe wall is built. The article discusses some questions of pressure stabilizer designing.Вопрос стабилизации давлСния ΠΈ расхода Тидкости особСнно Π°ΠΊΡ‚ΡƒΠ°Π»Π΅Π½ Π² систСмах ΠΊΠΎΡ€ΠΎΡ‚ΠΊΠΈΡ… Ρ‚Ρ€ΡƒΠ±ΠΎΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΎΠ², Π³Π΄Π΅ ΠΏΡ€Π΅Π΄ΡŠΡΠ²Π»ΡΡŽΡ‚ΡΡ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½Ρ‹Π΅ трСбования ΠΊ равномСрности ΠΏΠΎΠ΄Π°Ρ‡ΠΈ Ρ€Π°Π±ΠΎΡ‡Π΅ΠΉ Тидкости. Π’ условиях срСдних ΠΈ высоких Π΄Π°Π²Π»Π΅Π½ΠΈΠΉ (Π΄ΠΎ 100 атмосфСр ΠΈ Π²Ρ‹ΡˆΠ΅) стабилизатор давлСния с эллиптичСскими ΡƒΠΏΡ€ΡƒΠ³ΠΈΠΌΠΈ ΠΊΠ°ΠΌΠ΅Ρ€Π°ΠΌΠΈ создаСт условия для Π½ΠΎΡ€ΠΌΠ°Π»ΡŒΠ½ΠΎΠΉ Ρ€Π°Π±ΠΎΡ‚Ρ‹ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰Π΅Π³ΠΎ оборудования. Для Π³Ρ€Π°ΠΌΠΎΡ‚Π½ΠΎΠ³ΠΎ проСктирования стабилизатора, особСнно ΠΏΡ€ΠΈ Ρ€Π΅ΡˆΠ΅Π½ΠΈΠΈ вопроса ΠΎΠ± объСмС Тидкости, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ способСн Π²ΠΌΠ΅ΡΡ‚ΠΈΡ‚ΡŒ стабилизатор, Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎ ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΡ‚ΡŒ расчСт эллиптичСской ΠΎΠ±ΠΎΠ»ΠΎΡ‡ΠΊΠΈ ΠΏΠΎ Π΄Π΅Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΌΡƒ ΡΠΎΡΡ‚ΠΎΡΠ½ΠΈΡŽ. Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ приводится расчСт эллиптичСской ΠΎΠ±ΠΎΠ»ΠΎΡ‡ΠΊΠΈ ΠΏΠΎ Π΄Π΅Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΌΡƒ ΡΠΎΡΡ‚ΠΎΡΠ½ΠΈΡŽ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ пошагового нагруТСния ΠΈ ΠΏΡ€ΠΎΠ²Π΅Ρ€ΠΊΠΈ условий прочности Π½Π° ΠΊΠ°ΠΆΠ΄ΠΎΠΌ шагС нагруТСния. Одним ΠΈΠ· основных вопросов исслСдования являСтся вопрос ΠΎ Ρ‚ΠΎΠΌ, ΠΊΠ°ΠΊΡƒΡŽ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡŒΠ½ΡƒΡŽ Π½Π°Π³Ρ€ΡƒΠ·ΠΊΡƒ ΠΌΠΎΠ³ΡƒΡ‚ Π²Ρ‹Π΄Π΅Ρ€ΠΆΠΈΠ²Π°Ρ‚ΡŒ эллиптичСскиС ΠΊΠ°ΠΌΠ΅Ρ€Ρ‹. Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ исслСдуСтся Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡ‚ΡŒ максимального давлСния ΠΏΡ€ΠΈ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΌ конструкция Ρ€Π°Π±ΠΎΡ‚Π°Π΅Ρ‚ Π² ΡƒΠΏΡ€ΡƒΠ³ΠΎΠΉ области дСформирования ΠΎΡ‚ Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ стСнки эллиптичСской Ρ‚Ρ€ΡƒΠ±Ρ‹. Если Π² Ρ…ΠΎΠ΄Π΅ гидравличСских расчСтов становится извСстСн расход Тидкости, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎ ΠΏΠΎΠ³Π°ΡΠΈΡ‚ΡŒ, Ρ‚ΠΎ Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎ Π·Π½Π°Ρ‚ΡŒ, ΠΊΠ°ΠΊΠΎΠΉ объСм Тидкости способна Β«ΠΏΡ€ΠΈΠ½ΡΡ‚ΡŒΒ» ΠΊΠ°ΠΌΠ΅Ρ€Π°. Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π° Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡ‚ΡŒ коэффициСнта увСличСния ΠΏΠ»ΠΎΡ‰Π°Π΄ΠΈ ΠΏΠΎΠΏΠ΅Ρ€Π΅Ρ‡Π½ΠΎΠ³ΠΎ сСчСния ΠΎΡ‚ Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ стСнки Ρ‚Ρ€ΡƒΠ±Ρ‹. РассмотрСны Π½Π΅ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ вопросы проСктирования стабилизатора давлСния

    РасчСт эллиптичСских ΡƒΠΏΡ€ΡƒΠ³ΠΈΡ… ΠΊΠ°ΠΌΠ΅Ρ€ стабилизатора давлСния ΠΏΠΎ Π΄Π΅Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΌΡƒ ΡΠΎΡΡ‚ΠΎΡΠ½ΠΈΡŽ числСнным ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ

    No full text
    The question of pressure and flow rate stabilization is particularly relevant to short pipelines systems, which have high requirements for flow rate consistency of the working fluid. At medium and high pressures (up to 100 atmospheres and higher) the pressure stabilizer with elliptical elastic chambers provides conditions for normal operation of the corresponding equipment. For proper design of the stabilizer, especially deciding question of the liquid volume which the stabilizer can accommodate, it is necessary to carry out the calculation of the elliptical shell in the deformed state. The article provides the calculation of the elliptical shell in the deformed state by step by step loading method and checking the strength conditions at each step of loading. One of the main questions of the study is the question of what maximum load can withstand elliptical chambers. In this paper, we investigate the dependence of the maximum pressure at which the unit operates in the elastic area of deformation on the of the elliptical pipe wall thickness. If harmful oscillating discharge is known we should know the liquid volume which the camera can take. The dependence of the cross-sectional area increase coefficient on the thickness of the pipe wall is built. The article discusses some questions of pressure stabilizer designing.Вопрос стабилизации давлСния ΠΈ расхода Тидкости особСнно Π°ΠΊΡ‚ΡƒΠ°Π»Π΅Π½ Π² систСмах ΠΊΠΎΡ€ΠΎΡ‚ΠΊΠΈΡ… Ρ‚Ρ€ΡƒΠ±ΠΎΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΎΠ², Π³Π΄Π΅ ΠΏΡ€Π΅Π΄ΡŠΡΠ²Π»ΡΡŽΡ‚ΡΡ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½Ρ‹Π΅ трСбования ΠΊ равномСрности ΠΏΠΎΠ΄Π°Ρ‡ΠΈ Ρ€Π°Π±ΠΎΡ‡Π΅ΠΉ Тидкости. Π’ условиях срСдних ΠΈ высоких Π΄Π°Π²Π»Π΅Π½ΠΈΠΉ (Π΄ΠΎ 100 атмосфСр ΠΈ Π²Ρ‹ΡˆΠ΅) стабилизатор давлСния с эллиптичСскими ΡƒΠΏΡ€ΡƒΠ³ΠΈΠΌΠΈ ΠΊΠ°ΠΌΠ΅Ρ€Π°ΠΌΠΈ создаСт условия для Π½ΠΎΡ€ΠΌΠ°Π»ΡŒΠ½ΠΎΠΉ Ρ€Π°Π±ΠΎΡ‚Ρ‹ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰Π΅Π³ΠΎ оборудования. Для Π³Ρ€Π°ΠΌΠΎΡ‚Π½ΠΎΠ³ΠΎ проСктирования стабилизатора, особСнно ΠΏΡ€ΠΈ Ρ€Π΅ΡˆΠ΅Π½ΠΈΠΈ вопроса ΠΎΠ± объСмС Тидкости, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ способСн Π²ΠΌΠ΅ΡΡ‚ΠΈΡ‚ΡŒ стабилизатор, Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎ ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΡ‚ΡŒ расчСт эллиптичСской ΠΎΠ±ΠΎΠ»ΠΎΡ‡ΠΊΠΈ ΠΏΠΎ Π΄Π΅Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΌΡƒ ΡΠΎΡΡ‚ΠΎΡΠ½ΠΈΡŽ. Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ приводится расчСт эллиптичСской ΠΎΠ±ΠΎΠ»ΠΎΡ‡ΠΊΠΈ ΠΏΠΎ Π΄Π΅Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΌΡƒ ΡΠΎΡΡ‚ΠΎΡΠ½ΠΈΡŽ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ пошагового нагруТСния ΠΈ ΠΏΡ€ΠΎΠ²Π΅Ρ€ΠΊΠΈ условий прочности Π½Π° ΠΊΠ°ΠΆΠ΄ΠΎΠΌ шагС нагруТСния. Одним ΠΈΠ· основных вопросов исслСдования являСтся вопрос ΠΎ Ρ‚ΠΎΠΌ, ΠΊΠ°ΠΊΡƒΡŽ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡŒΠ½ΡƒΡŽ Π½Π°Π³Ρ€ΡƒΠ·ΠΊΡƒ ΠΌΠΎΠ³ΡƒΡ‚ Π²Ρ‹Π΄Π΅Ρ€ΠΆΠΈΠ²Π°Ρ‚ΡŒ эллиптичСскиС ΠΊΠ°ΠΌΠ΅Ρ€Ρ‹. Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ исслСдуСтся Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡ‚ΡŒ максимального давлСния ΠΏΡ€ΠΈ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΌ конструкция Ρ€Π°Π±ΠΎΡ‚Π°Π΅Ρ‚ Π² ΡƒΠΏΡ€ΡƒΠ³ΠΎΠΉ области дСформирования ΠΎΡ‚ Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ стСнки эллиптичСской Ρ‚Ρ€ΡƒΠ±Ρ‹. Если Π² Ρ…ΠΎΠ΄Π΅ гидравличСских расчСтов становится извСстСн расход Тидкости, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎ ΠΏΠΎΠ³Π°ΡΠΈΡ‚ΡŒ, Ρ‚ΠΎ Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎ Π·Π½Π°Ρ‚ΡŒ, ΠΊΠ°ΠΊΠΎΠΉ объСм Тидкости способна Β«ΠΏΡ€ΠΈΠ½ΡΡ‚ΡŒΒ» ΠΊΠ°ΠΌΠ΅Ρ€Π°. Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π° Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡ‚ΡŒ коэффициСнта увСличСния ΠΏΠ»ΠΎΡ‰Π°Π΄ΠΈ ΠΏΠΎΠΏΠ΅Ρ€Π΅Ρ‡Π½ΠΎΠ³ΠΎ сСчСния ΠΎΡ‚ Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ стСнки Ρ‚Ρ€ΡƒΠ±Ρ‹. РассмотрСны Π½Π΅ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ вопросы проСктирования стабилизатора давлСния

    Π’Π›Π˜Π―ΠΠ˜Π• Π“Π•ΠžΠœΠ•Π’Π Π˜Π§Π•Π‘ΠšΠ˜Π₯ Π˜Π‘Π‘Π›Π•Π”ΠžΠ’ΠΠΠ˜Π™ Π Π•Π”ΠšΠ˜Π₯ Π’Π˜ΠŸΠžΠ’ ΠŸΠžΠ’Π•Π Π₯ΠΠžΠ‘Π’Π•Π™ НА Π‘ΠžΠ—Π”ΠΠΠ˜Π• ΠΠžΠ’Π«Π₯ И Π£ΠΠ˜ΠšΠΠ›Π¬ΠΠ«Π₯ Π‘ΠžΠžΠ Π£Π–Π•ΠΠ˜Π™

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    The aim of the paper is to illustrate using of analytical surfaces, i.e. surfaces, which can be given by vector, parametric or explicit equations, in real structures, i.e. in parametric architecture. Parametric architecture is a unique style in which such concepts as sculpture, mathematics, structural mechanics, and architecture are interconnected. Parametric design in contrast to other styles has a relationship with mathematics. This paper continues a series of works of the authors devoted to application of analytical surfaces in architecture and building, devoted to investigation of influence of researches on the geometry of surfaces on design of large-span shell structures and to application of interesting geometrical forms for unique erections. In the paper, a photo of only one erection having this form illustrates every analytical surface, which can be seen in forms of real erections. It turned out that only 42 of the 600 surfaces described in the literature were used in the World. For those who are interested in the mathematical side of design of surfaces, their computer modeling, or more detailed information about real structures in the form of the surfaces in question, a voluminous bibliography are given.ЦСль ΡΡ‚Π°Ρ‚ΡŒΠΈ - Π°Π½Π°Π»ΠΈΠ· использования аналитичСских повСрхностСй, Ρ‚ΠΎ Π΅ΡΡ‚ΡŒ повСрхностСй, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΠΌΠΎΠ³ΡƒΡ‚ Π±Ρ‹Ρ‚ΡŒ Π·Π°Π΄Π°Π½Ρ‹ Π²Π΅ΠΊΡ‚ΠΎΡ€Π½Ρ‹ΠΌΠΈ, парамСтричСскими ΠΈΠ»ΠΈ нСявными уравнСниями, Π² Ρ€Π΅Π°Π»ΡŒΠ½Ρ‹Ρ… конструкциях, Ρ‚ΠΎ Π΅ΡΡ‚ΡŒ Π² парамСтричСской Π°Ρ€Ρ…ΠΈΡ‚Π΅ΠΊΡ‚ΡƒΡ€Π΅. парамСтричСская Π°Ρ€Ρ…ΠΈΡ‚Π΅ΠΊΡ‚ΡƒΡ€Π° - это ΡƒΠ½ΠΈΠΊΠ°Π»ΡŒΠ½Ρ‹ΠΉ ΡΡ‚ΠΈΠ»ΡŒ, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ ΠΎΠ±ΡŠΠ΅Π΄ΠΈΠ½ΡΠ΅Ρ‚ ΡΠΊΡƒΠ»ΡŒΠΏΡ‚ΡƒΡ€Ρƒ, ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΠΊΡƒ, ΡΡ‚Ρ€ΠΎΠΈΡ‚Π΅Π»ΡŒΠ½ΡƒΡŽ ΠΌΠ΅Ρ…Π°Π½ΠΈΠΊΡƒ ΠΈ Π°Ρ€Ρ…ΠΈΡ‚Π΅ΠΊΡ‚ΡƒΡ€Ρƒ. ΠŸΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΈΡ‡Π΅ΡΠΊΠΎΠ΅ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Π² ΠΎΡ‚Π»ΠΈΡ‡ΠΈΠ΅ ΠΎΡ‚ Π΄Ρ€ΡƒΠ³ΠΈΡ… стилСй ΠΈΠΌΠ΅Π΅Ρ‚ Ρ‚Π΅ΡΠ½ΡƒΡŽ связь с ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΠΊΠΎΠΉ. Π‘Ρ‚Π°Ρ‚ΡŒΡ являСтся ΠΏΡ€ΠΎΠ΄ΠΎΠ»ΠΆΠ΅Π½ΠΈΠ΅ΠΌ сСрии Ρ€Π°Π±ΠΎΡ‚ Π°Π²Ρ‚ΠΎΡ€ΠΎΠ², посвящСнных ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡŽ аналитичСских повСрхностСй Π² Π°Ρ€Ρ…ΠΈΡ‚Π΅ΠΊΡ‚ΡƒΡ€Π΅ ΠΈ ΡΡ‚Ρ€ΠΎΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²Π΅, Π° Ρ‚Π°ΠΊΠΆΠ΅ исслСдованию влияния исслСдований ΠΏΠΎ Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΠΈ повСрхностСй Π½Π° ΠΏΡ€ΠΎΠ΅ΠΊΡ‚ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Π±ΠΎΠ»ΡŒΡˆΠ΅ΠΏΡ€ΠΎΠ»Π΅Ρ‚Π½Ρ‹Ρ… структур ΠΈ ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡŽ интСрСсных гСомСтричСских Ρ„ΠΎΡ€ΠΌ для ΡƒΠ½ΠΈΠΊΠ°Π»ΡŒΠ½Ρ‹Ρ… сооруТСний. Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ каТдая аналитичСская ΠΏΠΎΠ²Π΅Ρ€Ρ…Π½ΠΎΡΡ‚ΡŒ, ΠΊΠΎΡ‚ΠΎΡ€ΡƒΡŽ ΠΌΠΎΠΆΠ½ΠΎ ΡƒΠ²ΠΈΠ΄Π΅Ρ‚ΡŒ Π² Ρ„ΠΎΡ€ΠΌΠ°Ρ… Ρ€Π΅Π°Π»ΡŒΠ½Ρ‹Ρ… сооруТСний, ΠΈΠ»Π»ΡŽΡΡ‚Ρ€ΠΈΡ€ΡƒΠ΅Ρ‚ΡΡ Ρ„ΠΎΡ‚ΠΎΠ³Ρ€Π°Ρ„ΠΈΠ΅ΠΉ Ρ‚ΠΎΠ»ΡŒΠΊΠΎ ΠΎΠ΄Π½ΠΎΠ³ΠΎ сооруТСния, ΠΈΠΌΠ΅ΡŽΡ‰Π΅Π³ΠΎ эту Ρ„ΠΎΡ€ΠΌΡƒ. ΠžΠ±Π½Π°Ρ€ΡƒΠΆΠ΅Π½ΠΎ, Ρ‡Ρ‚ΠΎ Ρ‚ΠΎΠ»ΡŒΠΊΠΎ 42 ΠΈΠ· 600 повСрхностСй, описанныС Π² Π½Π°ΡƒΡ‡Π½ΠΎ-тСхничСской Π»ΠΈΡ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€Π΅, Π±Ρ‹Π»ΠΈ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Π½Ρ‹ Π² ΠΌΠΈΡ€ΠΎΠ²ΠΎΠΉ ΠΏΡ€Π°ΠΊΡ‚ΠΈΠΊΠ΅. Для Ρ‚Π΅Ρ…, ΠΊΡ‚ΠΎ интСрСсуСтся матСматичСской стороной проСктирования аналитичСских повСрхностСй, ΠΈΡ… ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½Ρ‹ΠΌ ΠΌΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ, ΠΈΠ»ΠΈ Π±ΠΎΠ»Π΅Π΅ ΠΏΠΎΠ΄Ρ€ΠΎΠ±Π½Ρ‹ΠΌΠΈ свСдСниями ΠΎ Ρ€Π΅Π°Π»ΡŒΠ½Ρ‹Ρ… сооруТСниях Π² Ρ„ΠΎΡ€ΠΌΠ΅ рассматриваСмых повСрхностСй ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π° ΠΎΠ±ΡˆΠΈΡ€Π½Π°Ρ библиография

    Geometry, static, vibration and bucking analysis and applications to thin elliptic paraboloid shells

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    A large number of references dealing with the geometry, static, vibration and buckling analysis of elliptic paraboloid shells exist in the literature. This review work attempts to organize and summarize the extensive published literature on the basic achievements in investigations of thin-walled structures in the form of elliptic paraboloids. Possibilities of elliptic paraboloids with reference to machine-building and construction designs and to the apparatuses used in theoretical physics are briefly considered. The geometric part of the review is extended due to consideration of optimization of surface’s sizes, researches of representation of a surface on the plane and introducing bibliographic material on fractal geometry. Several existent analytical and numeral methods of calculation of the examined shells on durability give a possibility to choose one of the methods for the solution of new twodimensional or three-dimensional tasks. Geometrical researches, approximation and bending of elliptic paraboloid surfaces, research of the stress-strain state of shells by analytical and numerical methods, natural and forced vibration of a shell, forming and setting of surfaces, application of shells in the form of elliptic paraboloids are the main problems which are considered in this review. Β© Krivoshapko and Gbaguidi-Aisse
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