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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
71

O simbolismo do cordeiro na obra pictórica os noivos e os três músicos de Marc Chagall

Leite, Beatriz Mori 13 February 2015 (has links)
Made available in DSpace on 2016-03-15T19:43:02Z (GMT). No. of bitstreams: 1 Beatriz Mori Leite.pdf: 11444537 bytes, checksum: e2eb22df6a2e83e22a99a3a667d4ebd9 (MD5) Previous issue date: 2015-02-13 / This dissertation presents and analyses the symbol of Marc Chagall The bridegroom and the three musicians", dated in 1972. In this work the symbol is related to the idea of sacrifice as in the part of unconditional love. The analyses of this paint implied in the detailed studies of the artist s life with emphasis in his religious memory. Chagall was born in Russia, Jewish son lived in a traditional Judaic village, in 1887 had begun in the artistic world, in the early 20th century, in 1910, when moved to Paris. His use of symbols allows us to understand more properly his artistic production as well as his personal history. The aim of this study was to identify the relationship between the artist s work of art and the influence he suffered in culture through religious education. Therefore, this research has an interdisciplinary character and fits perfectly in the graduate program of Education, Art and History of Culture at the Mackenzie Presbyterian University. The main references refer to the theories proposed by Jean Paul Ronecker, when referring to the symbolism of the animal in the history of culture and art with contribution of Carl Gustav Jung through the book The man and your symbols . With Theoretical basis in the religious symbolism in the culture, involving Judaism and Christianity were also consulted Anatol Rosenfeld and the Brazilian philosopher Mario Ferreira dos Santos. From a methodological point of view, multiple paths were covered: visits to museums with exhibits of Chagall s works of arts in Brazil and France, as well as interviews with a French artist Jean Claude Pradier and the Brazilian Rabbi Isaac Rabier sharing the same artist Jewish religious line. Interviews were also conducted with Chagall in several stages of his life, acquired in video and audio. It was concluded that in the analysed work, symbolic elements related to Judaism and Christianity, are together as regards to the meanings that refer to human feelings with emphasis in universal love and their relationship with divine love. / Esta dissertação apresenta e analisa o símbolo do cordeiro na obra de Marc Chagall, Os noivos e os três músicos", datado em 1972.Nessa obra, esse símbolo está relacionado à idéia de sacrifício como parte do amor incondicional. A análise dessa pintura implicou no estudo detalhado da vida do artista, com ênfase na sua memória religiosa. Chagall nasceu na Rússia, filho de judeus viveu em uma aldeia tradicionalmente judaica, em 1887 e iniciou-se no mundo artístico no início do século XX, em 1910, quando mudou-se para Paris. O uso que faz dos símbolos permite compreender mais adequadamente sua produção artística, bem como sua trajetória pessoal. O objetivo principal deste estudo foi apontar as relações entre a obra de arte do artista e a influência que sofreu na cultura por meio da educação religiosa. Por isso mesmo, esta pesquisa tem um caráter interdisciplinar e se insere perfeitamente no programa de pós-graduação em Educação, Arte e História da Cultura da Universidade Presbiteriana Mackenzie. As principais referências bibliográficas remetem as teorias propostas por Jean Paul Ronecker, quando se refere ao simbolismo do animal na história da cultura e na arte com as contribuições de Carl Gustav Jung através do livro O homem e seus símbolos. Com base teórica sobre o simbolismo na cultura religiosa, envolvendo o judaísmo e o cristianismo, foram também consultados Anatol Rosenfeld e o filósofo brasileiro Mário Ferreira dos Santos. Do ponto de vista metodológico, vários caminhos foram percorridos: visitas a museus com exposições das obras de arte de Chagall, no Brasil e na França, bem como entrevistas com um artista francês Jean Claude Pradier e o rabino brasileiro Isaac Rabier que compartilha da mesma linha religiosa judaica do artista. Foram também utilizadas entrevistas realizadas com Chagall em diversas fases de sua vida, adquiridas em vídeo e em áudio.Concluiu-se que na obra analisada, elementos simbólicos relacionados ao judaísmo e ao cristianismo, estão juntos no que se refere aos significados que remetem aos sentimentos humanos, com ênfase no amor universal e suas relações com o amor divino.
72

Modeliranje i implementacija sistema za pretragu naučno-istraživačkih podataka / Modeling and implementation of search system for scientific research data

Penca Valentin 26 December 2014 (has links)
<p>Cilj je specifikacija, modeliranje i implementacija sistema pretrage naučno-istraživačkih podataka. Sistem pretrage treba da omogući bogatu i efikasnu pretragu naučno-istraživačkih podataka. Osnovna ideja je da se pretraga zasniva na bibliotečkim standardima SRU/W i CQL kako bi se mogli prihvatati zahtevi za pretragu sa udaljenih računara, a da korisnici sistema mogu da pretraţuju putem veb forme implementirane upotrebom Web 2.0 tehnologije pri čemu se od korisnika ne očekuje poznavanje pomenutih standarda</p><p>Metodologija &ndash; Na osnovu pregledane literature do&scaron;lo se do smernica za analizu sistema koji sadrţe naučno-istraţivače podatke. Na osnovu izvr&scaron;ene analize predloţene su neophodne funkcionalnosti i relevantni set indeksa koji pretraga CRIS sistema treba da podrţi. Predloţen je novi profil za pretragu podataka naučno-istraţivačke delatnosti. Implementiran je standardizovani sistem pretrage za CRIS sisteme baziran na Web 2.0 tehnologijama, SRU/W profilu pretrage i CQL upitnom jeziku. Sistem omogućava i udaljeno pretraţivanje eksternim entitetima zadavanjem adekvatnih zahteva u skladu sa SRU/W standardom. Kori&scaron;ćeni su CASE alati bazirani na objektno-orijentisanoj metodologiji za modeliranje sistema (UML 2.0). Softverska arhitektura je zasnovana na Internet tehnologijama. Za implementaciju je kori&scaron;ćena Java platforma. Dok je za izradu naprednih elemenata interfejsa kori&scaron;ćena se JSF biblioteka i AJAX tehnologije.</p><p>Rezultati &ndash; Razvijen je unifikovani profil pretrage za CRIS sisteme i implementiran je standardizovani sistem pretrage naučno-istraživačkih podataka koji se koristi na Univerzitetu u Novom Sadu. Specificiran i implementiran je sistem za pretragu naučno-istraţivačkih rezultata baziran na Web 2.0 tehnologijama i upotrebi CQL upitnog jezika. Korisnički sistem je dovoljno intuitivan da ga mogu koristiti i korisnici koji i ne poznaju standarde na kojima se zasniva sam pretraga. Specificiran i implementiran je servis koji omogućuje pretragu sa udaljenih računara upotrebom SRU/W protokola.</p><p>Praktična primena &ndash; Sistem za pretragu naučno-istraživačkih rezultata je implementiran kao deo CRIS UNS sistema koji se koristi na Univerzitetu u Novom Sadu. Čime je obezbeđen javni uvid i jednostavna pretraga podataka o institucijama/organizacijama, istraţivačima i publikovanim naučnim rezultatima unutar novosadskog univerziteta. Podrţani SRU/W standard ga čini potencijalno dostupnim i za eksterne sisteme.</p><p>Vrednost &ndash; Dat je profil pretrage koji predstavlja predlog kako da se izvr&scaron;i standardizacija pretrage podataka iz naučno-istraţivačke oblasti. Posebna prednost pomenutog CRIS profila je nezavisnost istog od implementacije samog sistema pretrage. Sama primena predloţenog profila je vrlo jednostavna jer se njegovi elementi trebaju samo asocirati sa podacima u postojećim sistemima. Jednostavnost primene profila praktično je pokazana u CRIS sistemu Univerziteta u Novom Sadu. Sama aplikacija pretrage implementira SRU/W profil i pruţa potencijalnu inteoperabilnost sa sistemima koji podrţavaju SRU/W standard. Tako su nakon implementacije sistema, podaci iz CRIS UNS postali dostupniji i trasparentniji.</p> / <p>Aim &ndash; The aim is specification, modeling and implementation of search of scientific research data. Search system should provide a rich and effective search of scientific research data. The basic idea is to enable search based on bibliographic standards SRU/W and CQL, because system need to be able to process search requests from remote computer, and also to provide searching through the web form implemented using Web 2.0 technology where users do not need to know these standards.</p><p>Methodology - From the related literature are came the guidelines for the analysis of systems that include scientific researchers data. Based on the analysis necessary functionality and relevant set of indexes that searches CRIS system should support are proposed. A new profile for the search data for scientific research was implemented. It was implemented a standardized system search for CRIS systems based on Web 2.0 technologies, SRU/W profile search and CQL Query Language. The system allows a remote search by entering appropriate requests in accordance with SRU/W standard. UML 2.0 CASE tools based on object-oriented methodology were used for modeling the system. The software architecture is relied on a set of Internet technologies. Implementation technologies are based on Java platform. For the development of advanced interface elements JSF library and AJAX technologies were used.<br />Results - A unified search profile for CRIS systems and a standardized system of search of scientific research data were developed, which are booth used at the University of Novi Sad. It was specified and implemented a system for search of scientific research data based on Web 2.0 technologies and the CQL query language. GUI is intuitive enough that it can be used by people who do not know the standards on which the search operation is based. Also it was specified and implemented a service that allows remote computer to search by using the<br />SRU/W protocol.</p><p>Practical application - Search system of scientific research data is implemented as part of CRIS UNS system which used at the University of Novi Sad for a long time. CRIS UNS is now able to provide public access and easy search for data of institutions/ organizations, researchers and published scientific results within the University of Novi Sad. Supported SRU/W standard makes the CRIS UNS potentially interoperable with external systems.</p><p>Value &ndash; Proposed search profile is some kind of a suggestion how to standardize the search and retrieval of scientific research data. A major advantage of the CRIS profile is that he has no any affect on the implementation of the search system. The application of the proposed profile is very simple because its elements should only be associated (mapped) with the data in existing systems. Ease of application for the profile is practically demonstrated in the CRIS system of the University of Novi Sad (CRIS UNS). Search application implements SRU/W profile and offers potential interoperability with the systems that support the SRU/W standard. After the implementation of the search system, it is obviously that data from CRIS UNS become more accessible and transparent.</p> / null
73

The Missa Assumpta est Maria of Marc-Antoine Charpentier / / Assumpta est Maria

Couse, Andrew Jerome January 1989 (has links)
The purpose of this Thesis is to present a modern critical edition of the Missa Assumpta est Maria (H. 11) and the Elevation a 5, sans dessus de violon (H. 251) of Marc-Antoine Charpentier (c. 1634-1704). The Thesis is divided into three chapters. The first chapter provides an introductory biography of the composer and a general overview of his works. The second chapter deals specifically with the Missa Assumpta est Maria and the Elevation a 5, offering first an investigation of the historical background to these works. This discussion continues with stylistic analyses and is followed by an examination into questions of performance practice that are raised by the music. The chapter is completed with a declaration of editorial principles, critical notes, texts and translations, and a conclusion. The final chapter of the Thesis is comprised of the edited transcriptions of the Missa Assumpta est Maria and the Elevation a 5, sans dessus de violon. Endnotes and bibliography are inserted at the end of chapter two.
74

L'autonomie d'un jeune agent révolutionnaire : Marc-Antoine Jullien de Paris, 1789-1794

Déplanche, Nicolas January 2008 (has links)
Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal
75

Die Ambassade des Marquis de Paulmy in der Schweiz von 1748 bis 1752 : Beziehungen zwischen Frankreich und der Eidgenossenschaft in der Mitte des 18. Jahrhunderts /

Michel, Hans. January 1954 (has links)
Diss. Phil. Bern, 1954. / Literaturverz.
76

L’identité juive en question : Irène Némirovsky, Patrick Modiano, Marc Weitzmann / Questioning jewish identity : Irène Némirovsky, Patrick Modiano, Marc Weitzmann

Quaglia, Elena 07 June 2017 (has links)
La judéité, c’est-à-dire le rapport personnel et singulier qu’un individu entretient avec son origine juive, trouve dans certaines oeuvres littéraires une résonance majeure. S’il est hasardeux d’assigner des écrivains à une identité par essence problématique, il n’est pas anodin d’interroger leur rapport à cette identité en tant que producteur de choix formels et thématiques. Il est ainsi moins question de trouver une place à l’écriture de la judéité à l’intérieur d’une littérature minoritaire canonisée, que, plutôt, d’interroger les formes changeantes de cette écriture au fil des époques et des esthétiques. À travers un corpus constitué principalement par les oeuvres d’Irène Némirovsky, de Patrick Modiano et de Marc Weitzmann, ce travail se propose donc d’étudier les évolutions des rapports entre écriture et judéité sur trois générations d’auteurs et d’observer ainsi les mutations de la conscience littéraire juive face aux réalités historiques et culturelles sur une longue période. Il s’agit en particulier d’interroger la mise en scène de la judéité au croisement entre discours autobiographique et discours social. Les oeuvres de Némirovsky, Modiano et Weitzmann sont notamment emblématiques d’une mise en question de l’identité juive, par une réappropriation, parfois ambiguë, parfois détournée, du discours antisémite.L’analyse des textes, parcourant presque un siècle, permet d’ouvrir une perspective spécifique sur la littérature française, jusqu’à ses développements les plus récents. Notamment, la question du terrorisme, liée à la situation au Moyen-Orient, le rapport avec Israël et, enfin, avec une mémoire des camps qui est de plus en plus une post-mémoire, sont au centre non seulement des écritures de la judéité, mais, plus en général, des tendances actuelles de la littérature française. Même au niveau esthétique, des formes textuelles codifiées et répandues dans la contemporanéité, comme l’autofiction, le récit de filiation ou le roman archéologique semblent très aptes à accueillir les interrogations autour d’une identité juive fuyante ou problématique. / Jewishness, that is to say the personal and singular relationship that an individual experiences regarding their Jewish origins, finds significant resonance in certain literary works. If it is dangerous to assign writers an identity that in and of itself is problematic, it is nonetheless useful to interrogate their relationship with this identity as they make formal and thematic choices. This is less a question of finding a place for writing Jewishness within a canonical and minor literary corpus, instead related to questioning the changing forms of this writing as seen in various epochs and within various aesthetics. Through a corpus composed principally of the works of Irène Némirovsky, Patrick Modiano and Marc Weitzmann, this study examines the evolutions of relationships between writing and Jewishness over three generations of authors, as well as changes in the Jewishliterary consciousness as it faced historical and cultural realities over time. This means paying particular attention to the representation of Jewishness at the crossroads of autobiographical and social discourses. The works of Némirovsky, Modiano and Weitzmann are notably emblematic in their questioning of Jewish identity through a reappropriation of anti-Semitic discourses that is at times ambiguous and at times deflecting.Analyzing these texts, which appeared over the course of almost a century, allows us to open a particular perspective on French literature, including some of its most recent developments. Notably, the question of terrorism as it is linked to the situation in the Middle East, relations with Israel, and the memory of the camps as it becomes more often a post-memory, are at the center not only of Jewish writing, but more generally of trends throughout French literature. Even at the aesthetic level, today’s codified and widespread textual forms such as auto-fiction, “récit de filiation” or “roman archéologique” seem quite capable of hosting investigations of a fleeting or problematic Jewish identity.
77

Lucien Febvre e a Europa: as fronteiras da história

Lima, Andrew Guilherme Okamura [UNESP] 26 February 2010 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:26:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-26Bitstream added on 2014-06-13T20:54:47Z : No. of bitstreams: 1 lima_ago_me_assis.pdf: 670041 bytes, checksum: 728eab97f13eb45b86f5ab4fe15597ad (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Esta dissertação aborda dois cursos de Lucien Febvre, proferidos no Collège de France entre os anos de 1944 e 1947. A partir de seus dois livros publicados postumamente: L’Europe: genèse d’une civilisation (1999) e Honneur et Patrie (1996), procuramos mapear primeiramente o conceito de Europa, e posteriormente, o surgimento de uma pátria cristã, passando pela européia, e por fim, o fortalecimento de um ideal da pátria francesa, após o século XVII. Toda essa problemática levantada por Lucien Febvre foi dada como um reflexo do contexto em que a Europa, principalmente a França se encontrava, no período da ocupação alemã em seu solo. Observamos que ao realizar tais estudos, Lucien Febvre utilizou-se da psicologia histórica, aplicando em todos os seus cursos, o conceito de outillage mental para mapear essa Europa, mas, principalmente, para tentar compreender sua trágica França / This paper deals with two Lucien Febvre’s courses, held in Collège de France between 1944 and 1947. From his two after death published books, L’Europe: genèse d’une civilisation (1999) and Honneur et Patrie (1996), the intention is, first of all, to map the Europe’s concept and then the arising of a Christian country, going through the European country, to finally the strengthening of an ideal French’s country, after the XVII Century. All this subject matter proposed by Lucien Febvre was taken as a reflex of the context in which Europe, specially France was living at that time, with the German invasion in French’s soil. Carrying out his studies, Lucien Febvre has used historical psychology, providing in all his courses the “mental outillage” concept to map that Europe, but specially his “tragical” France
78

Vers une amélioration quantitative et qualitative de l'extraction des composés phénoliques du marc de raisin rouge à l'aide d'électrotechnologies / Towards a quantitative and qualitative enhancement of the extraction of phenolic compounds from red grape pomace using electrotechnologies

Brianceau, Silène 18 December 2015 (has links)
Ce travail porte sur l’amélioration quantitative et qualitative du procédé de fabrication d’extraits de marc de raisin riches en composés phénoliques. Les effets de technologies alternatives de traitement de la biomasse végétale sur l’amélioration des rendements d’extraction ont été étudiés à l’échelle laboratoire. Leurs impacts sur la qualité biochimique des extraits obtenus ont été évalués via la caractérisation analytique des composés phénoliques.Une étude comparative de différentes technologies alternatives de pré-traitement en milieux aqueux (décharges électriques haute tension (DEHT), champs électriques pulsés (CEP) et ultrasons (US)), d’un marc de raisin issu d’un procédé de vinification en rouge, en amont de la diffusion, a permis d’approfondir la compréhension des phénomènes induits et de leurs effets sur l’amélioration de l’extractabilité des composés. Nous avons montré que le choix du procédé à mettre en oeuvre était relatif au type de composés phénoliques ciblés : la localisation tissulaire de ces composés est apparue comme un facteur-clé pour optimiser leur extraction. La technologie de pré-traitement par CEP, induisant un endommagement localisé des structures végétales, s’est avérée particulièrement intéressante pour extraire sélectivement les anthocyanes situés au niveau des couches de cellules supérieures de l’hypoderme de la pellicule de raisin. Nous avons, par la suite, montré que le pré-traitement par CEP, en milieu sec (sans ajout de solvant) et à intensité de champ électrique modérée, était plus efficace pour la récupération sélective des anthocyanes et moins énergivore qu’un traitement CEP de forte intensité d’une suspension aqueuse de marc. Pour ce faire, nous avons mis en place une nouvelle configuration de cellule qui nous a permis d’étudier la faisabilité d’un pré-traitement en milieu sec, sans ajout de liquide conducteur, et d’optimiser les paramètres opératoires (masse volumique, intensité du champ électrique, énergie spécifique) influençant la récupération subséquente, lors de la diffusion, des composés phénoliques. Afin d’intégrer notre démarche expérimentale dans une approche systémique de type « bioraffinerie », l’accent a été mis sur le traitement du marc réhydraté à posteriori de la diffusion. L’intensification du pressage de ce marc par chauffage ohmique (CO) permet d’améliorer les rendements globaux d’extraction tout en assurant un premier niveau de déshydratation de cette biomasse.Un bilan technico-économique montre que l’application successive des électro-technologies (pré-traitement par CEP en milieu sec et pressage assisté par CO à posteriori de la diffusion) permet une amélioration des rendements massiques d’extraction de l’ordre de 30 % comparativement au procédé classique. Ce gain matière compense l’augmentation du coût de production (+ 2.7 % comparativement au procédé classique) et résulte une diminution du coût de production de l’extrait (7.3 €/kg vs 9.4 €/kg pour le procédé classique). / This work aims at studying the effect of alternative technologies for the processing of winery byproducts on the improvement of extraction yields at laboratory scale. Their impacts on the biochemical quality of the extracts obtained from grape pomace were evaluated by the characterization of the extracted compounds. A comparative study on the effects of different alternative pre-treatment (pulsed electric field (PEF), high voltage electric discharges (HVED) and ultrasounds (US)) of aqueous suspensions of red grape pomace, prior to the extraction step, was realized with the specific objective of understanding the induced phenomena. The electroporation induced by PEF may allow the specific recovery of anthocyanins that are located in the upper cell layers of the hypodermis by facilitating the solvent penetration to particular skin tissues of grape. The location of targeted compounds with respect to tissue structures seems to be a key issue to optimize their extraction. As a consequence, we subsequently examined the feasibility of a PEF pre-treatment of relatively low humidity grape pomace for the enhancement of bioactive compounds extraction. We demonstrated that a relatively dry pomace (RH ≈ 55 %) can be effectively treated by PEF after optimal densification using a suitable configuration of the PEF cell. The PEF pre-treatment of a densified fermented grape pomace, at moderate electric field strengths, requires less output current and lower specific energy and is also more efficient for the selective recovery of anthocyanins than Hi-PEF pre-treatment of an aqueous suspension of grape pomace. We finally focused on the treatment of rehydrated grape pomace following the diffusion step. The enhancement of pressing of the grape pomace by ohmic heating allowed the recovery of two fractions: a solid fibrous residue partly dehydrated which could be further valorized as an agro-material or in feeding, and an extract, particularly rich in bioactive components.The technical-economic assessment shows that the successive application of electro-technologies (pre-treatment of grape pomace in dry environment by PEF followed by a pressing step assisted by ohmic heating) lead to an improvement of extraction yields of about 30 % compared to the conventional method. This mass improvement offset the increased production costs (+ 2.7 % compared to the conventional process) by reducing the total production costs of the extract (7.3 €/kg vs 9.4 €/kg for the conventional process).
79

Utveckla en FE-modell för att studera effekten av presspassning på en hypoid växelsats / Developing an FE model to study the ffect of press-fit on a hypoid gear set

Padmanabhan, Maadhav January 2017 (has links)
Gears are an integral part of devices ranging from simple wrist watches to complex systems like automotive and wave energy converters. They play a very important role in the transfer of torque. There are several types of gears to be chosen from, depending on the application. This thesis work deals exclusively with hypoid gears. A hypoid gear is a type of bevel gear, that transmits torque between two non-parallel shafts. It is similar to a spiral bevel gear, except that the pinion axis can be oset. It is this ability to offset, that renders hypoidgears as highly sought-after gears for automotive applications. It is crucial that these hypoid gears are designed efficiently and that their life before failure is predictable, to a reasonable degree of accuracy. To enable such predictions, this thesis makes an effort to build a finite element (FE) model. With the developed FE model, a study of the effect of press-fit on the ring gear's root bending stresses, that is present in a hypoid gear set of a car's Rear-Drive Unit (RDU), was carried out. The FE model was built on three different software - Transmission 3D (T3D), Hypoid Face Milled (HFM) and MSC Marc (Marc). The effect of press-fit on root bending stresses of the ring gear was first analyzed on T3D. To determine if the press-fit was correctly induced, the model was rebuilt and analyzed on Marc. HFM was used to determine the effect of inclusion of different components on the root bending stresses. Additionally,the HFM model was also replicated on Marc and a press-fit of 100m was induced. This was done to see if modelling the press-fit on HFM gave similar results to that of T3D and if using HFM in conjunction with Marclead to a better modelling procedure. It was found that the maximum root bending stresses increased linearly with increasing press-fit dimension. It was also found that the inclusion of different parts does not cause a significant increase in root bending stresses, except for the inclusion of differential cage. The effect of press-fit could not be quantified despite knowing that it affects the root bending stresses. When the same analysis done on HFM or T3D was done on Marc, there wasa 10% increase in stresses at highly stressed zone in Marc model of T3D; there was 10-15% increase in stresse sat highly stressed zone in the HFM model of Marc. Hence, quantification remained an impediment. It was not possible to quantify the error that occurred during the migration of analysis from HFM or T3D to Marc. However, potential causes of these errors could be the error in computation of bearing forces and difference in the definition of contacts in the software. Owing to large computational time and limited working period, all the analysis on Marc was carried out for one position and for the first time step of the gear mesh. If the errors in migration of analysis from one software to another could be quantified, then this modelling can be used to estimate the contribution of press-fit to rootbending stresses on the ring-gear. Although the contact pattern comparison between the virtual models andthe physical test suggests that HFM is a more trustworthy software, it is recommended to conduct some straingauge measurements on different ring gear teeth and then compare the results with those of the virtual model. / Kugghjul är en integrerad del av utrustningar som sträcker sig fråan enkla armbandsur till komplexa system som bilar eller vågfrakftverkomvandlare. De spelar en mycket viktig roll vid överföring av vridmoment. Det finns flera typer av kugghjul som man kan välja från, beroende på applikationen. Detta projekt handlar exklusivt om hypoidväaxlar. En hypoidväxel är en typ av vinkelväxel som överför vridmoment mellan två icke parallella axlar. Det liknar ett spiralformat växel, förutom att kugghjulets axel kan förskjutas. Det är denna förmåga att kompensera, vilket gör hypoidväxlar en mycket eftertraktade redskap för fordonsapplikationer. Det är avgörande att dessa hypoid-redskap är konstrueras effektivt och att deras liv före misslyckande ar förutsägbart, i en rimlig grad av noggrannhet. För att möjliggöra sådana Förutsägelser gör denna avhandling ett försök att bygga en finita-element (FE) modell. Med den utvecklade FE-modellen utfördes en studie av effekten av presspassning pa ringvaxelns rotböjspänningar, som finns i en hypoid växelsats av en bilens Bakre enhet (RDU). FE-modellen byggdes på tre olika programvaror: Transmission 3D (T3D), Hypoid Face Milled (HFM) och MSCMarc (Marc). Effekten av presspassning på riggböjspänningarna hos ringväxeln analyserades först på T3D. För att bestämma om presspassningen var korrekt inducerad, byggdes modellen och analyserades på Marc. HFM användes för att bestämma effekten av inkludering av olika komponenter på rotböjspänningarna. Dessutom replikerades HFM-modellen också på Marc och en presspassning på 100 microns inducerades. Detta gjordes för att se om modellering av presspass på HFM gav liknande resultat som T3D och om man använde HFM i kombination med Marc leder det till ett bättre modelleringsförfarande. Det visade sig att de maximala rotböjspänningarna ökade linjärt med ökande presspassningsdimension. Det konstaterades ocksåa att införandet av olika delar inte orsakar en signifikant ökning av rotböjspänningar, utom införandet av differentialbur. Effekten av presspassning kunde inte kvantifieras trots att man vet det påverkar rotböjspänningarna. När samma analys gjord på HFM eller T3D gjordes på Marc, fanns det en 10% ökning av späanningar vid starkt stressad zon i Marc-modellen av T3D; det var 10-15% ökning av spänningar vid starkt stressad zon i HFM-modellen av Marc. Därför förblev kvantifiering ett hinder. Det var inte möjligt att kvantifiera felet som inträffade under analysanalysen från HFM eller T3D till Marc. Dock kan potentiella orsaker till dessa fel vara felet vid beräkning av bärkrafter och skillnad i definitionen av kontakter i programvaran. På grund av stor beräkningstid och begränsad arbetstid utfördes all analys på Marc för bara en position och för det forsta steget av växelns nät. Om felen i migration av analys från en programvara till en annan kunde kvantifieras, då kan denna modellering användas för att beräkna bidragen från presspassning till rotböjspänningar på ringväxeln. Även om kontaktmönstersjämforelsen mellan de virtuella modellerna och det fysiska testet föreslår att HFM är en mer pålitlig programvara, rekommenderas det att utföra en viss belastning Mätmätningar på olika ringväxeltänder och sedan jämföra sedan resultaten med dem från virtuella modellen.
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The Missa Assumpta est Maria of Marc-Antoine Charpentier /

Couse, Andrew Jerome January 1989 (has links)
No description available.

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