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Влияние эрозии на динамические свойства Ñ‚ÑƒÑ€Ð±Ð¸Ð½Ð½Ñ‹Ñ Ð»Ð¾Ð¿Ð°Ñ‚Ð¾Ðº

бакалаврская работа
descriptionPublicationkeyboard_double_arrow_right Other literature type 01 Jan 2017 Russian Publisher:Санкт-Петербургский политехнический университет Петра Великого

doi: 10.18720/spbpu/2/v17-6962

Влияние эрозии на динамические свойства Ñ‚ÑƒÑ€Ð±Ð¸Ð½Ð½Ñ‹Ñ Ð»Ð¾Ð¿Ð°Ñ‚Ð¾Ðº

Abstract

Работа посвящена актуальной теме - расчету собственных частот лопатки турбинной установки и учету влияния эрозии на них. Объектом исследования служит лопатка, геометрия которой задана массивами декартовых координат нескольких поперечных сечений. Исследование динамических свойств лопатки проводится с помощью математического моделирования лопатки как естественно-закрученного стержня с использованием теории упругих стержней. Метод возмущений применяется для нахождения малых поправок к собственным частотам, обусловленным изменением механических свойств лопатки в результате эрозии. При определении собственных частот лопатки как трехмерного тела использован метод конечных элементов, реализованный в программе Ansys. Трехмерная компьютерная модель построена в программе Creo.

Keywords

турбинные лопатки, метод ÐºÐ¾Ð½ÐµÑ‡Ð½Ñ‹Ñ ÑÐ»ÐµÐ¼ÐµÐ½Ñ‚Ð¾Ð², теория ÑƒÐ¿Ñ€ÑƒÐ³Ð¸Ñ ÑÑ‚ÐµÑ€Ð¶Ð½ÐµÐ¹

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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