19 research outputs found
Calculative and Experimental Analysis of Natural and Critical Frequencies and Mode Shapes of High-speed Rotor for Micro Gas Turbine Plant
No full textAbstractThe Micro gas turbine plant (MGTP) is used for the decentralized supply to the external electric power consumers. Its nominal and heat capacity are 100kW and 200kW respectively. Its critical part is a rotor with the operating speed of 65,000rpm. It consists of two subsystems: a turbocharger rotor (TCR) and a rotor of the starter-generator (SGR) connected by elastic coupling. One of the design requirements for the rotor is the absence of critical speed in the ± 30% operating speed range.In this article the natural and the critical frequencies of the rotor are analyzed.Its natural frequencies evaluated for the whole rotor system and for each of the two subsystems individually. For the TCR such an assessment was obtained through the finite element method (FEM) calculation. Due to the complexity of the SGR design, its natural frequencies were estimated and proved experimentally using LMS modal analysis technology. Also a study of the influence of bearings stiffness on the natural frequencies of the rotor was conducted to identify its acceptable range.The study of the critical speeds of the MGTP rotor was performed in two stages by calculation: an analytical and numerical solution of the test problem obtained firstly in order to confirm the accuracy of FEM calculation in the Ansys Workbench package followed by the critical speeds evaluated through the FEM calculation on solid 3D model.Based on the obtained results, some recommendations on the design of the rotor elements are given to ensure the natural frequencies are in the restrained region
Calculated-experimental analysis of the natural and critical frequencies and mode shapes high-speed of rotors micro gas turbine unit
No full textПирогова Наталья Сергеевна. Студентка кафедры «Прикладная механика, динамика и прочность машин», Южно-Уральский государственный университет, г. Челябинск, [email protected]. Тараненко Павел Александрович. Кандидат технических наук, доцент кафедры «Прикладная механика, динамика и прочность машин», директор научно-образовательного центра «Экспериментальная механика», Южно-Уральский государственный университет, г. Челябинск,[email protected]. N.S. Pirogova, South Ural State University, Russian Federation, [email protected],P.A. Taranenko, South Ural State University, Russian Federation, [email protected]Микрогазотурбинная энергоустановка (МГТУ) предназначена для выработки и децентрализованного снабжения внешних потребителей электрической энергией с номинальной мощностью 100 кВт и тепловой 200 кВт. Ответственной частью МГТУ является ротор, рабочая частота вращения которого составляет 65 000 мин–1. Он состоит из двух подсистем – ротора турбокомпрессора (ТК) и ротора стартер-генератора (СГ), соединенных упругой связью. Одним из требований, предъявляемых к конструкции ротора, является отсутствие его критических частот в диапазоне ± 30 % от рабочей частоты вращения. Статья посвящена анализу собственных и критических частот и форм ротора микрогазотурбинной установки. Собственные частоты ротора МГТУ оценены как для системы в целом, так и для каждой из двух подсистем отдельно. Для ротора ТК такая оценка получена методом конечных элементов. Собственные частоты и формы стартер-генератора вследствие сложности его конструкции определены расчетным и подтверждены экспериментальным путем с применением технологии LMS модального анализа. Проведено исследование собственных частот ротора МГТУ в зависимости от жесткостей подшипниковых опор и установлен допустимый диапазон последних. Решение задачи об определении критических частот ротора МГТУ выполнено расчетным путем в два этапа. На первом, с целью верификации алгоритма определения критических частот в пакете Ansys Workbench решена известная тестовая задача. На втором этапе выполнен расчет критических частот трехмерной модели ротора МГТУ методом конечных элементов.
На основании результатов выполненных расчетов даны рекомендации относительно конструкции элементов ротора, позволяющие увести его критические частоты из недопустимой области. The Micro gas turbine plant (MGTP) is used as power plant to decentralized supply of external electric power consumers. Its nominal capacity is 100 kW and its heat capacity is 200 kW. Rotor is a critical part of the MGTP, the operating speed of which is 65 000 min–1. It consists of two subsystems - the turbocharger rotor (TCR) and the rotor of the startergenerator (SGR) connected by elastic coupling. One of the requirements for the design of the rotor, it is the absence of critical frequencies in the range of ± 30 % of the operating speed. This article is devoted to the analysis of the natural and critical frequencies of the MGTP rotor. The natural frequencies evaluated for the system as a whole and for each of the two subsystems separately. For the TCR such an assessment was obtained by finite element method (FEM) calculation. Due to the complexity of the SGR's design, its natural frequencies were estimated and confirmed experimentally using LMS modal analysis technology. A study on the natural frequencies of the MGTP rotor was conducted at different rigidity of bearings and its acceptable range was specified. The study on the critical frequencies of the MGTP was performed by calculation in two stages. At the first stage, an analytical and numerical solution of the test problem obtained in order to confirm the accuracy and correctness of the determination of the critical frequencies
in the Ansys Workbench FEM-package. At the second stage, critical frequencies of the
MGTP rotor evaluated by FEM calculation on solid model. Based on the obtained results, some recommendations on the rotor's elements designs are given to ensure the natural frequencies in the restrained region
Опись имущества А. Ф. Турчанинова 1789 г. как источник изучения культурно-бытовых традиций уральского дворянства
No full textThe article continues a complex source analysis of a unique inventory of 1789, drawn up after the death of A. F. Turchaninov, the owner of Sysert mining district. The author discusses the structure and architecture of the Sysert Manor, as well as the surroundings thereof. Referring to the materials of the Inventory, the author reconstructs the interior and the furnishing of A. F. Turchaninov’s manor which allows her to conclude about the dual character of a Ural manor located on the site of works, which combined features of a rich European-like everyday life with elements of the old patriarchal traditions. Additionally, the author concludes that the owner of the manor was a transitional type of an industrial merchant transforming into a nobleman. Aiming to reach the level of the nobility, A. F. Turchaninov imitated their ways and attitudes to a great extent, spent money on luxurious things, and was fond of collecting things, following the fashion of the time. The Sysert Manor with its abundant collections and library was a rare phenomenon for the Russian province of the time. Generally speaking, the Inventory helps get a better understanding of the history of the nobility and the little-studied manor life of the Urals during the second half of the 18th century.Статья продолжает комплексный источниковедческий анализ Описи 1789 г., составленной после смерти владельца Сысертского горного округа А. Ф. Турчанинова[1]. В статье рассматривается устройство и архитектурный облик сысертской усадьбы, подробно исследуется околоусадебное пространство. Реконструированные по материалам Описи интерьеры и обстановка господского дома А. Ф. Турчанинова позволили сделать вывод о двойственном характере уральской призаводской усадьбы, сочетавшей черты богатого европеизированного дворянского быта с элементами старого патриархального уклада. Другой вывод, к которому приходит автор, касается самого владельца усадьбы, представляющего собой переходный тип от купца-промышленника к дворянину. Стремясь соответствовать уровню родовитой знати, А. Ф. Турчанинов во многом ей подражал, не жалел средств на приобретение предметов роскоши, увлекался, следуя дворянской моде своего времени, коллекционированием. Сысертская усадьба с ее богатейшими коллекциями и книжным собранием представляла собой редкое для российской провинции того времени культурное явление. В целом Опись позволяет по-новому взглянуть на историю формирования дворянского сословия и малоизученной дворянской усадебной жизни Урала второй половины XVIII в.[1] Первая статья цикла была посвящена анализу преимущественно недвижимого заводского имущества, см.: [Пирогова, 2015а].
Euroskepticism and it's manifistation on the exaple of ČSSD and ODS
No full textIn this bachelor paper author tried not only to explain the term "euroscepticism", to describe various theories and concepts of euroscepticism and to choose the most suitable concept for the analysis of euroscepticism but also to examine the manifestations of euroscepticism in two Czech political parties - ČSSD and ODS - from 2006 to 2018. The theoretical part is devoted to defining the term "euroscepticism", its origin and contemporary concept. I tried to explain the definition of term "euroscepticism" by means of the basic literature on the given topic, such as the work of Taggart, Kopecky and Mudd, Flood etc. Using the theoretical part, I tried to put chosen political parties into one of the euroscepticism typologies. In my research of manifestations of euroscepticism, I have been using party program documents and information from the ODS and ČSSD websites. In addition, I used Czech-language literature on this topic (Euroscepticism in the Czech Republic), data from the sociological surveys of STEM and CVVM, records of voting in the Parliament of the Czech Republic and speeches of selected members from both political parties. I chose those parties because I suppose that both are substantial competing parties that deserves attention when examining the problem of euroscepticism in the Czech..
КНИГА В КОНТЕКСТЕ КУЛЬТУРЫ
No full textThe article discusses the phenomenon of the late manuscript book as part of the three largest libraries of the Ural industrial noblemen of the 18th century. Based on new sources (property inventories, statements, and other documentary materials of the preserved manuscripts unique to the region), the reasons for the existence of manuscript books in the noble environment of the Urals are considered. The author examines the composition of the books, determines their thematic sections, original and translated literature, and compares the manuscript book composition of libraries of different owners and representatives of different generations of the Ural industrialists. The author concludes that the latter had increased readership demands and lacked the necessary printed publications, which was one of the reasons for the distribution of manuscript books in the Ural province. The manuscript collections had distinguishing features and books unusual for typical nobility libraries, which can be explained by the transitive type of the Ural industrial nobility: they did not break their “tribal” ties with the democratic environment from which they emerged. Being noble only in the first or second generation, they strove to conform to the noble fashion for enlightenment, spared no means to complete their libraries, filling the shortage of printed publications with orders for translations and manuscript copies of books. The introduction of new sources into scientific discourse will give a new impetus to the study of the culturally and historically significant and yet insufficiently studied phenomenon of the late manuscript book in Russia and in the Urals. © 2020 Tomsk State University - Faculty of Philology. All rights reserved.Russian Foundation for Basic Research, РФФИ: 18-09-00582
КНИГА В КОНТЕКСТЕ КУЛЬТУРЫ
No full textThe article discusses the phenomenon of the late manuscript book as part of the three largest libraries of the Ural industrial noblemen of the 18th century. Based on new sources (property inventories, statements, and other documentary materials of the preserved manuscripts unique to the region), the reasons for the existence of manuscript books in the noble environment of the Urals are considered. The author examines the composition of the books, determines their thematic sections, original and translated literature, and compares the manuscript book composition of libraries of different owners and representatives of different generations of the Ural industrialists. The author concludes that the latter had increased readership demands and lacked the necessary printed publications, which was one of the reasons for the distribution of manuscript books in the Ural province. The manuscript collections had distinguishing features and books unusual for typical nobility libraries, which can be explained by the transitive type of the Ural industrial nobility: they did not break their “tribal” ties with the democratic environment from which they emerged. Being noble only in the first or second generation, they strove to conform to the noble fashion for enlightenment, spared no means to complete their libraries, filling the shortage of printed publications with orders for translations and manuscript copies of books. The introduction of new sources into scientific discourse will give a new impetus to the study of the culturally and historically significant and yet insufficiently studied phenomenon of the late manuscript book in Russia and in the Urals. © 2020 Tomsk State University - Faculty of Philology. All rights reserved.Russian Foundation for Basic Research, РФФИ: 18-09-00582
Брак без любви, любовь вне брака: женщина в дворянской семье восемнадцатого века
No full textThis article refers to a set of documents revealing the relations within the noble family of the Ural industrialist A. F. Turchaninov and one of his daughters, Natalia Koltovskaya, in the eighteenth century. The author considers general problems of the private life of people of a privileged Russian class, namely, marital relations, possibilities, and conditions of dissolution of marriage, the position of women in the family and their rights, and the attitude to extramarital affairs in secular society. The article examines the reasons for the emergence and development of a provincial woman’s sense of independence and inner freedom, the origins of her rebellion against patriarchal family structures, for the right to decide for herself, and the extent to which such manifestations of “freedom” could be considered typical of Russia at that time, or whether they should be considered an exception to the general norm of behaviour. The story of N. A. Koltovskaya’s escape from her family, her relations with Emperor Paul I and Senator G. R. Derzhavin, shows the conformism of the supreme power, which manifested itself, on the one hand, in the awareness of the latter of the importance of its role in protecting the family and the moral foundations of the upper class, and, on the other hand, in the possibility of the upper class to take advantage of the opportunities offered by the situation and, if necessary, of circumventing the existing rules of law, of influencing government bodies (the Senate) in one’s own interests and, in general, in the interference of the supreme power in the family life of its subjects. The appendix to the article contains four documents: two “women’s” letters – one from the mother to Catherine II and the other from the daughter to Paul I, as well as letters from her lover (translated from French) and her husband. © 2024 Ural Federal University. All rights reserved
Брак без любви, любовь вне брака: женщина в дворянской семье восемнадцатого века
No full textThis article refers to a set of documents revealing the relations within the noble family of the Ural industrialist A. F. Turchaninov and one of his daughters, Natalia Koltovskaya, in the eighteenth century. The author considers general problems of the private life of people of a privileged Russian class, namely, marital relations, possibilities, and conditions of dissolution of marriage, the position of women in the family and their rights, and the attitude to extramarital affairs in secular society. The article examines the reasons for the emergence and development of a provincial woman’s sense of independence and inner freedom, the origins of her rebellion against patriarchal family structures, for the right to decide for herself, and the extent to which such manifestations of “freedom” could be considered typical of Russia at that time, or whether they should be considered an exception to the general norm of behaviour. The story of N. A. Koltovskaya’s escape from her family, her relations with Emperor Paul I and Senator G. R. Derzhavin, shows the conformism of the supreme power, which manifested itself, on the one hand, in the awareness of the latter of the importance of its role in protecting the family and the moral foundations of the upper class, and, on the other hand, in the possibility of the upper class to take advantage of the opportunities offered by the situation and, if necessary, of circumventing the existing rules of law, of influencing government bodies (the Senate) in one’s own interests and, in general, in the interference of the supreme power in the family life of its subjects. The appendix to the article contains four documents: two “women’s” letters – one from the mother to Catherine II and the other from the daughter to Paul I, as well as letters from her lover (translated from French) and her husband. © 2024 Ural Federal University. All rights reserved
Культурологические особенности национальных стилей ведения деловых переговоров (на примере стран Северной Америки и Латинской Америки)
No full textУмение вести деловые переговоры, учитывая культурологические особенности партнеров, и знание норм делового этикета – необходимые условия для ведения международного бизнеса. Настоящая работа посвящена актуальной на сегодняшний день проблеме – культурологически обусловленным различиям в национальных стилях ведения устных деловых переговоров.
Актуальность выбранной темы обусловлена тем, что в сегодняшнем глобальном мире всё ещё сохраняется тенденция отстаивания национальных особенностей, ценностей и традиций. В данном дискурсе особенно интересно сравнение представителей стран Северной Америки и Латинской Америки, поскольку и первые и вторые могут называться «американцами», однако могут кардинально отличаться друг от друга по многим показателям. Новизна настоящей работы заключается в комплексном подходе к исследованию: автор производит анализ культурологических особенностей представителей несколько стран как из Северной, так и из Латинской Америки с помощью различных классификаций, предложенных известными в области межкультурной деловой коммуникации исследователями.
Автор приходит к выводу, что национальные особенности проявляются в устных переговорах между представителями стран Северной Америки и Латинской Америки и влияют на процесс их проведения. Кроме того, автор выявляет, какие факторы могут влиять на возникновение разногласий в ходе переговорного процесса, и с какими проблемами могут столкнуться бизнесмены из Северной Америки, контактируя с представителями Латинской Америки, и наоборот.The ability to negotiate, considering cultural particularities of partners, and knowledge of business etiquette are necessary conditions for running international business. The work is dedicated to an urgent issue of today, i.e. culturally conditioned differences in national styles of conducting verbal business negotiations.
The relevance of the chosen subject is due to the fact that in today's global world there is still a tendency to defend national particularities, values and traditions. In this discourse it is especially interesting to compare the representatives of North America and Latin America, because both the former and the latter can be called "Americans", but can differ from each other in many ways. The novelty of the present work is in the comprehensive approach to the study: the author makes an analysis of the cultural characteristics of representatives of several countries from both North and Latin America using various classifications proposed by well-known researchers in the field of intercultural business communication.
The author concludes that national characteristics are evident in the verbal negotiations between representatives of North American and Latin American countries and affect the process of their performance. In addition, the author identifies what factors can influence the occurrence of disagreements during the negotiation process and what problems businessmen from North America may encounter when in contact with representatives of Latin America and vice versa
VARIETIES OF BOOK BINDINGS IN THE LIBRARIES OF THE URAL INDUSTRIALISTS OF THE 18TH CENTURY
No full textThe article is devoted to a most poorly studied topics of bibliology — the history of Russian binding of the 18th century. It contains an analysis of the bindings of 6 lost personal libraries of the Ural plant-owners of that time, made on the basis of the inventories of their property. In total, about 4,000 records were identified and analyzed with an indication of the types of bindings (or their absence), which allows speaking about the representativeness of the given data. In addition to property inventories, the manufacturers’ correspondence and consolidated statements, as well as records in 18th century books, found in modern book depositories of the Urals, are taken into account. Altogether, this rare documentary information made it possible for the first time to take into account what terminology was used when describing the bindings by contemporaries, and allowed to make adjustments to the existing classifications of bindings. The researcher presents examples showing which books were in expensive gilded, morocco or parchment bindings, and which were «rooted in leather» in paper bindings, or were «unbound» and simply «binded in blocks»; the author also gives their descriptions, and indicates prices. The ratio of different types of bindings has been presented in the table, showing which of them was preferred by the library owners. Conditions and sequence of orders of bindings for individual publications and periodicals are considered; the examples of obtaining books in publishing covers are also highlighted. The question remains about the masters who provided bookbinding services to their customers. Sources do not provide accurate evidence of the existence of own bookbinding shops that belonged to the Ural plant-owners, but they do not exclude them either. The author provides documentary evidence of Demidov’s orders for bindings from St. Petersburg masters. It is concluded that the considered libraries of 18th century manufacturers mostly had modest bindings, without super exlibrises, and that expensive and luxurious bindings made up an insignificant part of them, and related mainly to liturgical books. In general, the acquirement of books corresponded not to the bibliophile, but to the educational and «working» purposes for their owners, the first Ural industrialists, who often came from other estates and considered books as a necessary tool and a source of knowledge
