Assessment of suitability of screen tubes with damages for further use on the basis of mathematical modeling

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dc.citation.epage29
dc.citation.issue1
dc.citation.spage21
dc.contributor.affiliationІнститут прикладних проблем механіки і математики ім. Я. С. Підстригача НАН України
dc.contributor.affiliationPidstryhach Institute for Applied Problems of Mechanics and Mathematics National Academy of Sciences of Ukraine
dc.contributor.authorДробенко, Б.
dc.contributor.authorБудз, С.
dc.contributor.authorDrobenko, B.
dc.contributor.authorBudz, S.
dc.coverage.placenameЛьвів
dc.coverage.placenameLviv
dc.date.accessioned2020-02-27T09:45:20Z
dc.date.available2020-02-27T09:45:20Z
dc.date.created2019-02-26
dc.date.issued2019-02-26
dc.description.abstractЗдійснено комп’ютерне моделювання процесів деформування екранних труб котлоагрегатів теплоелектростанцій з потоншенням стінок внаслідок інтенсивного впливу топкових газів. Побудовано залежності між максимальними напруженнями в екранних трубах з експлуатаційними потоншеннями і геометричними параметрами пошкоджених ділянок труб, що дають змогу визначити мінімальну товщину труб, за якої експлуатаційні напруження не перевищують заданого допустимого рівня. Встановлено мінімальну допустиму товщину труби в серединній зоні пошкодженої ділянки. Показано, що температурні напруження в трубі за ї ї зовнішнього обігрівання дещо компенсують силові напруження від внутрішнього тиску.
dc.description.abstractComputer simulation of the processes of deformation of screen tubes of boiler units at a thermal power station with wall thinning due to the intense influence of flue gases has been carried out. The dependences between the maximum stresses in the screen tubes with operational thinnings and the geometrical parameters of the damaged areas of the tubes have been constructed, which allow us to determine the minimum thickness of tubes, for which operating stresses do not exceed a given permissible level. The minimum permissible thickness of the tube in the middle zone of the damaged area has been established. It is shown that the temperature stresses in a pipe under its external heating somewhat compensate for force stresses from the internal pressure.
dc.format.extent21-29
dc.format.pages9
dc.identifier.citationDrobenko B. Assessment of suitability of screen tubes with damages for further use on the basis of mathematical modeling / B. Drobenko, S. Budz // Mathematical Modeling and Computing. — Lviv : Lviv Politechnic Publishing House, 2019. — Vol 6. — No 1. — P. 21–29.
dc.identifier.citationenDrobenko B. Assessment of suitability of screen tubes with damages for further use on the basis of mathematical modeling / B. Drobenko, S. Budz // Mathematical Modeling and Computing. — Lviv : Lviv Politechnic Publishing House, 2019. — Vol 6. — No 1. — P. 21–29.
dc.identifier.urihttps://ena.lpnu.ua/handle/ntb/46153
dc.language.isoen
dc.publisherLviv Politechnic Publishing House
dc.relation.ispartofMathematical Modeling and Computing, 1 (6), 2019
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dc.relation.referencesen1. Mechanics of fracture and strength of materials. Reference book, Vol. 8. Edit. by V.V.Panasyuk. Kyiv, Publishing House "Academiperiodica" (2005), (in Ukrainian).
dc.relation.referencesen2. MelekhovR.K., PokhmurskyV. I. Construction materials of power equipment. Kyiv, Naukova Dumka (2003), (in Ukrainian).
dc.relation.referencesen3. Demidov S.P. Theory of elasticity. Moscow, Vysshaya Shkola (1979), (in Russian).
dc.relation.referencesen4. KupradzeV.D. Methods of potential in the theory of elasticity. Moscow, Fizmatgiz (1963), (in Russian).
dc.relation.referencesen5. Mikhlin S.G. Variational methods in mathematical physics. Moscow, Nauka (1979), (in Russian).
dc.relation.referencesen6. NowackiW. Dynamic Problems of Thermoelasticity. Springer Netherlands (1975).
dc.relation.referencesen7. RabotnovYu.N. Mechanics of a deformable solid. Moscow, Nauka (1979), (in Russian).
dc.relation.referencesen8. Properties of steels and alloys used in boiler-turbine construction. Guidelines. (16). Part One, edit. by L.Ya. Lieberman, M. I.Peysihis. Leningrad, ONTI CKTI named after I. I.Polzunov (1966), (in Russian).
dc.relation.referencesen9. SakharovA. S., Altenbach I. The finite element method in solid mechanics. Kyiv, Vyscha Shkola (1982), (in Russian).
dc.relation.referencesen10. ZienkiewiczO.C., TaylorR. L. Finite Element Method, Vol. 1. The Basis. London, Butterworth Heinemann (2000).
dc.rights.holderCMM IAPMM NAS
dc.rights.holder© 2019 Lviv Polytechnic National University
dc.subjectматематичне та комп’ютерне моделювання
dc.subjectтруби котлоагрегатів
dc.subjectоцінка придатності до експлуатації
dc.subjectнапружений стан
dc.subjectраціональні геометричні параметри
dc.subjectmathematical and computer modeling
dc.subjecttubes of boiler units
dc.subjectassessment of suitability for operation
dc.subjectstress state
dc.subjectrational geometric parameters
dc.subject.udc539.3
dc.subject.udc518.61
dc.subject.udc658.589
dc.titleAssessment of suitability of screen tubes with damages for further use on the basis of mathematical modeling
dc.title.alternativeОцінка придатності екранних труб з пошкодженнями до подальшої експлуатації на основі результатів математичного моделювання
dc.typeArticle

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Mathematical Modeling And Computing. – 2019. – Vol. 6, No. 1