Littérature scientifique sur le sujet « Castigliano »

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Articles de revues sur le sujet "Castigliano"

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Hartmann, F. « Castigliano and Sobolev ». ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik 65, no 2 (1985) : 121–25. http://dx.doi.org/10.1002/zamm.19850650213.

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Kondo, Kyohei. « On the Castigliano Theorems ». JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 52, no 606 (2004) : 316–27. http://dx.doi.org/10.2322/jjsass.52.316.

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Ward, J. P. « General Solutions Using the Castigliano Theorem ». International Journal of Mechanical Engineering Education 25, no 3 (juillet 1997) : 205–14. http://dx.doi.org/10.1177/030641909702500305.

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The Castigliano theorem of solid mechanics is normally used to obtain displacements at specific points on the surface of an elastic body. In this work it will be shown that by using fictitious forces placed in general positions the general solution for the displacement may be found without the need to solve a differential equation. The work also uses the technique to obtain an unusual derivation of the Euler-Bernoulli equation.
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Schoeftner, Juergen. « Extension of Castigliano’s method for isotropic beams ». Acta Mechanica 231, no 11 (19 août 2020) : 4621–40. http://dx.doi.org/10.1007/s00707-020-02762-z.

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Abstract In the present contribution Castigliano’s theorem is extended to find more accurate results for the deflection curves of beam-type structures. The notion extension in the context of the second Castigliano’s theorem means that all stress components are included for the computation of the complementary strain energy, and not only the dominant axial stress and the shear stress. The derivation shows that the partial derivative of the complementary strain energy with respect to a scalar dummy parameter is equal to the displacement field multiplied by the normalized traction vector caused by the dummy load distribution. Knowing the Airy stress function of an isotropic beam as a function of the bending moment, the normal force, the shear force and the axial and vertical load distributions, higher-order formulae for the deflection curves and the cross section rotation are obtained. The analytical results for statically determinate and indeterminate beams for various load cases are validated by analytical and finite element results. Furthermore, the results of the extended Castigliano theory (ECT) are compared to Bernoulli–Euler and Timoshenko results, which are special cases of ECT, if only the energies caused by the bending moment and the shear force are considered. It is shown that lower-order terms for the vertical deflection exist that yield more accurate results than the Timoshenko theory. Additionally, it is shown that a distributed load is responsible for shrinking or elongation in the axial direction.
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Goldmann, Lewis S. « A Numerical Lead Frame Compliance and Stress Model ». Journal of Electronic Packaging 116, no 1 (1 mars 1994) : 23–29. http://dx.doi.org/10.1115/1.2905489.

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A new method is presented to compute the mechanical compliance and thermal stress in surface mount leads of arbitrary shape. It involves expressing the profile polynomially by a computer-generated spline curve, and numerically integrating the generalized Castigliano formulas. Comparisons to data in the literature, generated by standard analytical and experimental techniques, show excellent agreement. An example is presented to show typical results obtainable by using the model.
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Tekavčić, Pavao. « Annibale Elia, Le verbe italien, Les complétives dans les phrases à un complé­ ment, Biblioteca della ricerca, Linguistica comparata diretta da Annibale Elia e Maurice Gross, vol. 1, Schena (Fasano di Puglia) -A.-G. Nizet (Parigi), 1984, 305 pp. » Linguistica 26, no 1 (1 décembre 1986) : 193–97. http://dx.doi.org/10.4312/linguistica.26.1.193-197.

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L'opera recensita costituisce il primo volume dei materiali per Ia comparazio­ ne della sintassi (nel nostro caso: dell'italiano e del francese) ed appartiene alia serie di ricerche su quello che è definito lexique-grammaire, ricerche che vengono effet­ tuate in diversi centri europei (Parigi, Napoli, Bari, Salerno, Palermo, Barcellona, Lisbona, Bremen, e Bochum). Le ricerche sulla sintassi italiana hanno i paralleli nel dominio degli altri idiomi romanzi: il francese (M. Gross), il castigliano (C. Subi­ rats) ed il portoghese (De Maceido Oliveira).
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Kurrer, K. E. « Zur Debatte um die Theoreme von Castigliano in der klassischen Baustatik ». Bautechnik 75, no 5 (mai 1998) : 311–22. http://dx.doi.org/10.1002/bate.199802590.

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A.M. Ilkiu. « Aplicação do segundo teorema de Castigliano na solução de estruturas hiperestaticas ». Engenharia Civil UM, no 62 (20 décembre 2022) : 33–44. http://dx.doi.org/10.21814/ecum.4490.

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No presente artigo, apresentam-se estudos de casos de análise de estruturas estaticamente indeterminadas ou hiperestáticas, utiliza-se o segundo teorema de Castigliano e o “Theorem of Last Work” na determinação das constantes hiperestáticas. Consideram-se modelos de estruturas sujeitos a carregamentos diversos onde, as condições de contorno nos apoios externos sugeridos como redundante são identificadas e as incógnitas ou constantes hiperestáticas determinadas. Destacam-se as análises das equações clássicas apresentadas por Timoshenko S.P. e Young D.H. (1965) e das teorias elásticas no desenvolvimento dos modelos matemáticos. Utiliza-se da simulação numérica, através do programa de Elementos Finitos (FEA) Ansys onde, comparam se os resultados numéricos e analíticos que foram obtidos pelas equações do presente trabalho.
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Marotti de Sciarra, F. « Direct and dual theorems of castigliano and clapeyron for generalized elastic models ». Acta Mechanica 124, no 1-4 (mars 1997) : 107–30. http://dx.doi.org/10.1007/bf01213021.

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Tartabini, Veronica. « Verso un sapere sul sacro : dal misticismo spagnolo alla ragione poetica ». Bajo Palabra, no 25 (14 juin 2021) : 251–72. http://dx.doi.org/10.15366/bp2020.25.012.

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San Giovanni della Croce e Teresa d’Avila esercitarono la loro influenza sulle riflessioni di una delle protagoniste della filosofia spagnola del XX secolo: María Zambrano. Nel 1939, compiendo i primi passi del suo esilio in Messico, la filosofa scrisse sul grande mistico castigliano, ereditando la sua critica ad una concezione dell’uomo che possa prescindere dall’anima e dalle “viscere” dell’esistenza, dall’amore per la vita e le sue differenze, dall’unione di filosofia e poesia. In età matura, a Roma, la pensatrice malagueña scrive citando Santa Teresa e la sua visione della soggettività umana, ereditando i suoi insegnamenti per comprendere l’essere umano nella sua costante ricerca di unione con il sacro. Si tratta di una lunga tradizione di pensiero, che colloca la discepola di Ortega sulla scia dei grandi mistici spagnoli del XVI secolo.
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Thèses sur le sujet "Castigliano"

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Masala, Maurizio. « Il picariglio castigliano di Barezzo Barezzi : una versione seicentesca del Lazarillo de Tormes ». Paris 3, 2003. http://www.theses.fr/2003PA030110.

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Le sujet de la thèse est le Picariglio castigliano : une traduction italienne, par Barezzo Barezzi (Cremona 1560 - Venise 1643) du roman espagnol du seizième siècle Lazarillo de Tormes. Le Picariglio est publié à Venise par le même Barezzi en 1622 et réédité en 1635. Barezzi ajoute au texte original des matériaux de différent genre (nouvelles, sermons, proverbes. . . ) pour l'adapter aux goûts du public italien
The thesis is about the Picariglio castigliano: an Italian translation , by Barezzo Barezzi (Cremona 1560 - Venice 1643) of the sixteenth century Spanish novel Lazarillo de Tormes. The Picariglio is published in Venice by the same Barezzi in 1622 and reprinted in 1635. Barezzi adds plenty of different materials (short stories, sermons, proverbs. . . ) to the original text, in order to adapt it to the Italian literary tradition
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Ricci, Maria Teresa. « L'homme universel chez Baldassar Castiglione et Baltasar Gracian ». Clermont-Ferrand 2, 2002. http://www.theses.fr/2002CLF20013.

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Au XVIe et au XVIIe siècles, dans plusieurs pays d'Europe, et surtout en Italie, en France et en Espagne, sont écrits de nombreux traités de comportement, qui ont joué un rôle très important dans le développement de la civilisation européenne. Dans notre thèse, nous portons plus particulièrement notre attention sur le célèbre "Libro del Cortegiano" (1528) de B. Castiglione (1478-1529), et sur les écrits de B. Gracian (1601-1658), notamment "El Heroe" (1637), "El Discreto" (1646) et l'"Oraculo manual y arte de prudencia" (1647). Castiglione se proposant de décrire dans son oeuvre la "profession de la courtisanerie", à laquelle se consacrent nombre d'anciens chevaliers, nous induit à considérer l'idéal du "parfait courtisan" tout dabord comme l'expression de l'ancienne noblesse féodale, qui se voit transformer, à partir de la fin du Moyen âge, en une "caste" courtisane. L'idéal de l"homme universel" de Castiglione apparaît alors en ce sens comme l'expression de l'émergence d'un nouveau modèle de comportement social. Le modèle social créé par Gracian s'éloigne du cortegiano. Gracian donne des préceptes pour l'individu qui veut parvenir et se maintenir. A l'homme de cour de Castiglione, qui vit dans un monde enchanté, sous le signe de la "grâce", Gracian oppose l'homme du calcul qui vit dans un monde où homo homini lupus. A l'idéalisme de Castiglione, Gracian opposera le pragmatisme
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Poschenrieder, Sarah Theresa Verfasser], Kathrin [Akademischer Betreuer] [Gutachter] [Castiglione et Harald [Gutachter] Klein. « Prozess zur skalierbaren Herstellung von Nanokompartimenten aus ABA-Triblock-Copolymeren / Sarah Theresa Poschenrieder ; Gutachter : Kathrin Castiglione, Harald Klein ; Betreuer : Kathrin Castiglione ». München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1126115754/34.

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Klermund, Ludwig Johann Verfasser], Kathrin [Akademischer Betreuer] [Gutachter] [Castiglione et Dieter [Gutachter] Langosch. « Surface Functionalization of Nano-scale Membrane Reactors for Multienzyme Syntheses / Ludwig Johann Klermund ; Gutachter : Kathrin Castiglione, Dieter Langosch ; Betreuer : Kathrin Castiglione ». München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1131802373/34.

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Schwarzer, Tom Sebastian Verfasser], Kathrin [Akademischer Betreuer] [Gutachter] [Castiglione et Michael [Gutachter] Groll. « Membrane functionalization of nano-scale enzyme membrane reactors for asymmetric syntheses / Tom Sebastian Schwarzer ; Gutachter : Michael Groll, Kathrin Castiglione ; Betreuer : Kathrin Castiglione ». München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1142376656/34.

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Green, Rachel Karen. « Raising the curtain : The countess Virginie de Castiglione and tableau-vivant ». Thesis, University of Leeds, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494239.

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Cox, Virginia. « Speaking volumes : the uses of literary dialogue from Castiglione to Tasso ». Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333277.

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Santos, Daniel William da Silva. « Machiavelli e Castiglione : reflexos do Speculum Princeps no apogeu do renascimento ». Pontifícia Universidade Católica de São Paulo, 2009. https://tede2.pucsp.br/handle/handle/11823.

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Made available in DSpace on 2016-04-27T17:27:30Z (GMT). No. of bitstreams: 1 Daniel William da Silva Santos.pdf: 736281 bytes, checksum: 32a148fafc696dad08ac576fdcd21ed7 (MD5) Previous issue date: 2009-09-30
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The present research seeks to investigate the disparity reasons that comes out between Il Principe, of Niccolò Machiavelli, and the Book Fourth by Il Cortegiano, of Baldassare Castiglione, which is about the indicated behavior for the governing class that is looking for possession and power exercise; a fact that put such books inside the same literature genres Speculum Princeps. This kind of genre also constitute a object of study through which it s possible to point out the reasons why, even having a common origin, the referred books end different perspectives for giving advices to the governing class. So, this distinction seems to be based on the different interpretations of theoretical elements among those that articulate in Speculum Princeps genre since The Old Age. Therefore, as this research intends to point out, what is created among the thoughts expressed by Machiavelli and Castiglione isn t a rupture, as its particularities would suggest, but a tension, due to the confront that these works allow to see certain contiguity
A presente pesquisa busca investigar as razões das disparidades que afloram do confronto entre Il Principe, de Niccolò Machiavelli, e o Livro Quarto de Il Cortegiano, de Baldassare Castiglione, no que concerne à conduta indicada aos governantes com vistas à posse e exercício do poder; fator em virtude do qual tais obras inscrevem-se igualmente no interior do gênero literário Speculum Princeps. Esse gênero, por seu turno, também constitui objeto de análise, por meio da qual é possível evidenciar as razões pelas quais, mesmo possuindo uma ascendência comum, as referidas obras encerram perspectivas distintas quanto ao aconselhamento dos governantes. Com efeito, tal distinção parece fundar-se nas diferentes interpretações dos elementos teóricos que se articulam na história do gênero Speculum Princeps desde a Antiguidade. Portanto, como o estudo ora empreendido pretende mostrar, o que se engendra entre as reflexões expressas por Machiavelli e Castiglione não é uma ruptura, como suas particularidades poderiam sugerir, senão uma tensão, posto que o cotejo de suas obras permite vislumbrar certa contiguidade
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VAGNI, GIACOMO. « BALDASSAR CASTIGLIONE - CESARE GONZAGA. Rime e Tirsi. Edizione critica e commentata ». Doctoral thesis, Università Cattolica del Sacro Cuore, 2013. http://hdl.handle.net/10280/1861.

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Il lavoro si propone di dare l’edizione critica e commentata della produzione poetica volgare di Baldassar Castiglione e Cesare Gonzaga. Esso ricostruisce dettagliatamente la fortuna e la tradizione dei testi, indagando il contesto storico e geografico in cui le liriche dei due mantovani furono diffuse. Sono affrontati problemi attributivi, con l’espunzione di un testo apocrifo assegnato dalla vulgata a Castiglione, e la pubblicazione di diversi inediti. Il corpus totale delle rime extravaganti si attesta così a 32 componimenti, comprese le sei poesie che compongono la piccola silloge dedicata ad Elisabetta Gonzaga dai due cugini. I testi con tradizione multipla sono dotati di due fasce di apparato, di tipo negativo, in cui si raccolgono le varianti di tradizione, rispettivamente sostanziali e grafico-morfologiche. Il commento discute i rari casi in cui è possibile attribuire le varianti redazionali all’autore. Seguono le ottave pastorali del "Tirsi". Il commento ai testi, attraverso il reperimento di modelli e luoghi paralleli, oltre ad illustrare la progressiva adesione alla rigorosa imitazione petrarchesca (da Rvf e Trionfi) proposta dal Bembo, mostra il rapporto dei due autori con la poesia cortigiana contemporanea.
The paper aims to give a critical and annotated edition of vernacular poems by Baldassar Castiglione and Cesare Gonzaga. It reconstructs in detail the history of the circulation and tradition of the poems, and it examinates the historical and geographical context in which the texts were copied and spread. Attribution problems are discussed, an apocryphal poem is expunged from Castiglione’s corpus, unpublished texts are published. The whole corpus is composed of 32 texts, including the little collection of six lyric poems dedicated to Elisabetta Gonzaga. The negative apparatus is divided into two parts, where text variants and morphological differences between the witnesses are shown. Lyric poems are followed by the eclogue ‘Tirsi’. A commentary is provided, where models and parallel places are illustrated, aiming to highlight how the two poets pursued a faithful imitation of Petrarch poetry, following Pietro Bembo’s teachings, and showing their debts with the XVth Century court poetry.
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VAGNI, GIACOMO. « BALDASSAR CASTIGLIONE - CESARE GONZAGA. Rime e Tirsi. Edizione critica e commentata ». Doctoral thesis, Università Cattolica del Sacro Cuore, 2013. http://hdl.handle.net/10280/1861.

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Il lavoro si propone di dare l’edizione critica e commentata della produzione poetica volgare di Baldassar Castiglione e Cesare Gonzaga. Esso ricostruisce dettagliatamente la fortuna e la tradizione dei testi, indagando il contesto storico e geografico in cui le liriche dei due mantovani furono diffuse. Sono affrontati problemi attributivi, con l’espunzione di un testo apocrifo assegnato dalla vulgata a Castiglione, e la pubblicazione di diversi inediti. Il corpus totale delle rime extravaganti si attesta così a 32 componimenti, comprese le sei poesie che compongono la piccola silloge dedicata ad Elisabetta Gonzaga dai due cugini. I testi con tradizione multipla sono dotati di due fasce di apparato, di tipo negativo, in cui si raccolgono le varianti di tradizione, rispettivamente sostanziali e grafico-morfologiche. Il commento discute i rari casi in cui è possibile attribuire le varianti redazionali all’autore. Seguono le ottave pastorali del "Tirsi". Il commento ai testi, attraverso il reperimento di modelli e luoghi paralleli, oltre ad illustrare la progressiva adesione alla rigorosa imitazione petrarchesca (da Rvf e Trionfi) proposta dal Bembo, mostra il rapporto dei due autori con la poesia cortigiana contemporanea.
The paper aims to give a critical and annotated edition of vernacular poems by Baldassar Castiglione and Cesare Gonzaga. It reconstructs in detail the history of the circulation and tradition of the poems, and it examinates the historical and geographical context in which the texts were copied and spread. Attribution problems are discussed, an apocryphal poem is expunged from Castiglione’s corpus, unpublished texts are published. The whole corpus is composed of 32 texts, including the little collection of six lyric poems dedicated to Elisabetta Gonzaga. The negative apparatus is divided into two parts, where text variants and morphological differences between the witnesses are shown. Lyric poems are followed by the eclogue ‘Tirsi’. A commentary is provided, where models and parallel places are illustrated, aiming to highlight how the two poets pursued a faithful imitation of Petrarch poetry, following Pietro Bembo’s teachings, and showing their debts with the XVth Century court poetry.
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Livres sur le sujet "Castigliano"

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Saavedra, Miguel de Cervantes. Novelas ejemplares : Il novelliere castigliano ; Novelle. Padova : Unipress, 2008.

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Fernández de Villegas, Pedro, 1453-1536 et Dante Alighieri 1265-1321, dir. Dante nel Rinascimento castigliano : L'Infierno di Pedro Fernández de Villegas. Napoli : T. Pironti, 2011.

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Il Picariglio castigliano di Barezzo Barezzi : Una versione seicentesca del Lazarillo de Tormes. Roma : Bulzoni, 2004.

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I viaggi dei cavalieri : Tempo e spazio nel romanzo cavalleresco castigliano, secoli XIV-XVI. Soveria Mannelli (Catanzaro) : Rubbettino, 2009.

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Il potere della parola : Il castigliano nel Cinquecento tra Italia e Spagna : grammatica, ideologia, traduzione. Manziana (Roma) : Vecchiarelli, 2012.

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Calef, Paola. Il primo Dante in castigliano : Il codice madrileno della Commedia con la traduzione attribuita a Enrique de Villena. Alessandria : Edizioni dell'Orso, 2013.

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Grossmann, Maria. Colori e lessico : Studi sulla struttura semantica degli aggettivi di colore in catalano, castigliano, italiano, romeno, latino ed ungherese. Tübingen : G. Narr, 1988.

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Ferrari, Paolo. Achille Castiglioni. [Paris] : Centre Georges Pompidou,Centre de Creation Industrielle, 1985.

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Steven, Guarnaccia, dir. Achille Castiglioni. Mantova : Corraini, 2000.

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Salvatore, Cristina. Niccolò Castiglioni. Milan : Ricordi, 2005.

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Chapitres de livres sur le sujet "Castigliano"

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Göldner, Hans, et Franz Holzweißig. « Sätze von Castigliano ». Dans Leitfaden der Technischen Mechanik, 276–305. Heidelberg : Steinkopff, 1988. http://dx.doi.org/10.1007/978-3-662-12252-5_15.

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Hartmann, F. « Castigliano and sobolev ». Dans Lecture Notes in Mathematics, 137–52. Berlin, Heidelberg : Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/bfb0076268.

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Berger, Joachim. « Verfahren von Castigliano ». Dans Technische Mechanik für Ingenieure, 418–43. Wiesbaden : Vieweg+Teubner Verlag, 1994. http://dx.doi.org/10.1007/978-3-322-89898-2_25.

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Mayr, Martin. « Satz von CASTIGLIANO ». Dans Technische Mechanik, 398–405. 9e éd. München : Carl Hanser Verlag GmbH & Co. KG, 2021. http://dx.doi.org/10.3139/9783446469525.055.

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Göldner, Hans, et Wolfgang Pfefferkorn. « Satz von Castigliano ». Dans Technische Mechanik, 161–73. Wiesbaden : Vieweg+Teubner Verlag, 1988. http://dx.doi.org/10.1007/978-3-322-86316-4_12.

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Kessel, Siegfried, et Dirk Fröhling. « Der Satz von Castigliano ». Dans Technische Mechanik - Engineering Mechanics, 85–93. Wiesbaden : Vieweg+Teubner Verlag, 2012. http://dx.doi.org/10.1007/978-3-8348-2182-9_11.

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Kessel, Siegfried, et Dirk Fröhling. « Der Satz von Castigliano ». Dans Technische Mechanik / Technical Mechanics, 85–93. Wiesbaden : Vieweg+Teubner Verlag, 1998. http://dx.doi.org/10.1007/978-3-322-82998-6_11.

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Spura, Christian. « Sätze von Castigliano, Menabrea und Engesser ». Dans Energiemethoden der Technischen Mechanik, 155–77. Wiesbaden : Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-29574-5_8.

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Capecchi, Danilo, et Giuseppe Ruta. « I teoremi di minimo di Menabrea e Castigliano ». Dans UNITEXT, 171–238. Milano : Springer Milan, 2011. http://dx.doi.org/10.1007/978-88-470-1714-6_4.

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Ricklin, Thomas. « Alfonso X 'el Sabio' e la filosofia in castigliano. Le dimensioni di un progetto culturale reale-immaginario ». Dans Textes et Etudes du Moyen Âge, 207–45. Turnhout : Brepols Publishers, 2003. http://dx.doi.org/10.1484/m.tema-eb.4.00096.

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Actes de conférences sur le sujet "Castigliano"

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Lindkvist, Lars. « Stiffness Model of Coiled Springs Including the Axial Asymmetry due to the Helical Geometry ». Dans ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0247.

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Abstract The stiffness of a short section of a coiled spring is derived by writing the elastic energy in the spring wire, considering its actual geometric form, and then applying the Castigliano theorem. The resulting linear stiffness model includes the effects of pitch, curvature of the wire and distortion due to normal and transverse forces in the wire. Further, the starting and ending points of the spring wire are taken into consideration. This stiffness model is used to derive the locally linearized stiffness matrix for a complete coiled spring that is laterally loaded. The stiffness matrix is evaluated by first calculating the non-linear deformation for a given external load and then linearizing the analysis about that equilibrium point. The deformation is calculated by summing the contributions from a number of small spring elements for which the deformations are considered to be linear. The natural frequencies of a mechanical system consisting of a rigid body and a laterally loaded spring are calculated and compared with experimental results. These experiments clearly verify the proposed theoretical stiffness matrix for the complete spring and detect the rotational asymmetry of the spring.
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Ding, Mei. « Appreciation of Giuseppe Castiglione ‘s Baizi painting ». Dans proceedings of the 2nd International Conference on Literature, Art and Human Development (ICLAHD 2020). Paris, France : Atlantis Press, 2020. http://dx.doi.org/10.2991/assehr.k.201215.522.

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Feng, Kai, et Shigehiko Kaneko. « Link-Spring Model of Bump-Type Foil Bearings ». Dans ASME Turbo Expo 2009 : Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59260.

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The field experiences of gas foil bearings (GFBs) from the 1960s prove that GFBs offer several advantages over traditional oil bearings and rolling element bearings. They have the potential to be applied in a wide spectrum of turbomachinery. Bump-type foil bearings, which are considered as the best structure for GFBs, can be simply described as a hydrodynamic bearing utilizing the ambient air as the lubricant and a smooth shell supported by a corrugated bump foil as the bearing surface. However, the performance predictions of bump-type foil bearings are difficult due to mechanical complexity of the support elastic structure, especially for the effects of four factors, elasticity of bump foil, interaction forces between bumps, friction forces at contact surfaces, and local deflection of top foil. In this investigation, an analytical model of bump-type foil bearings considering the effects of all above factors is presented. In this model, each bump of the bump strip is simplified to two rigid links and a horizontally spaced spring, whose stiffness is determined from Castigliano’ theorem. Then, interaction forces and friction forces can be coupled with the bump flexibility though the horizontal elementary spring. The local deflection of top foil is described using a Finite Element model and added to the film thickness for the pressure prediction with the Reynolds’ equation. The bump deflections of a strip with ten bumps under different load distributions are calculated with the presented model and the predictions show consistency with published results. Moreover, the predicted bearing load and film thickness of a full bump-type foil bearing using this model are very close to the experimental data. Also, radial clearance and friction force variations in the foil bearing are noted to change the stiffness of bump significantly. And the predictions from the calculation with a proper selection of radial clearance and friction coefficients show extremely good agreement with the experimental data. The assumption of minimum reachable film thickness is based on experimental data to determine the load capacity of bearing. The results demonstrate that the radial clearance of foil bearing has an optimum value for the maximum load capacity.
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Aydın, Yasemin O¨, Kevin C. Galloway, Yigit Yazicioglu et Daniel E. Koditschek. « Modeling the Compliance of a Variable Stiffness C-Shaped Leg Using Castigliano’s Theorem ». Dans ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-29190.

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This paper discusses the application of Castigliano’s Theorem to a half circular beam intended for use as a shaped, tunable, passively compliant robot leg. We present closed-form equations characterizing the deflection behavior of the beam (whose compliance properties vary along the leg) under appropriate loads. We compare the accuracy of this analytical representation to that of a Pseudo Rigid Body (PRB) approximation in predicting the data obtained by measuring the deflection of a physical half-circular beam under the application of known static loads. We briefly discuss the further application of the new model for solving the dynamic equations of a hexapod robot with a C-shaped leg.
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Odom, E. M., et C. J. Egelhoff. « Teaching deflection of stepped shafts : Castigliano's theorem, dummy loads, heaviside step functions and numerical integration ». Dans 2011 Frontiers in Education Conference (FIE). IEEE, 2011. http://dx.doi.org/10.1109/fie.2011.6143039.

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Chen, Guimin, Fulei Ma, Ruiyu Bai, Spencer P. Magleby et Larry L. Howell. « A Framework for Energy-Based Kinetostatic Modeling of Compliant Mechanisms ». Dans ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68205.

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Although energy-based methods have advantages over the Newtonian methods for kinetostatic modeling, the geometric nonlinearities inherent in deflections of compliant mechanisms preclude most of the energy-based theorems. Castigliano’s first theorem and the Crotti-Engesser theorem, which don’t require the problem being solved to be linear, are selected to construct the energy-based kinetostatic modeling framework for compliant mechanisms in this work. Utilization of these two theorems requires explicitly formulating the strain energy in terms of deflections and the complementary strain energy in terms of loads, which are derived based on the beam constraint model. The kinetostatic modeling of two compliant mechanisms are provided to demonstrate the effectiveness of using Castigliano’s first theorem and the Crotti-Engesser theorem with the explicit formulations in this framework. Future work will be focused on incorporating use of the principle of minimum strain energy and the principle of minimum complementary strain energy.
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Meghdari, A. « A Variational Approach for Modeling Flexibility Effects in Manipulator Arms ». Dans ASME 1990 Design Technical Conferences. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/detc1990-0100.

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Abstract This paper presents a general technique to model flexible components (mainly links and joints flexibilities are considered) of manipulator arms based on the Castigliano’s theorem of least work. The robotic arms flexibility properties are derived and represented by the matrix of compliance coefficients. Such expressions can be used to determine the errors due to the robotic tip deformations under the application of a set of applied loads at the tip in Cartesian space. Once these deformations are computed, they may be used to correct for the positional errors arisen from the robotic structural deformations in the motion control algorithms.
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Esteki, H., et A. Hasannia. « Multi-Objective Optimization of Piezoelectric Microactuator Using Genetic Algorithms ». Dans ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66909.

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In flex-tensional piezoactuators, due to the low displacement of piezostacks, a compliant mechanism is used to amplify displacement of piezostack. In this paper, optimization of a compliant mechanism with corner-filleted flexure hinges is carried out using real-coded genetic algorithms (GAs) to avoid trapping in local optimums. The objective functions are displacement amplification and stiffness of mechanism and design variables are cross-sectional size and material used. The constraints which are applied on mechanism are based on piezostack dimensions and manufacturing limits. Displacement amplification and stiffness are calculated using strain energy and Castigliano’s displacement theorem.
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Antoine, J. F., G. Abba et C. Sauvey. « Approximate Explicit Calculation of First Vibration Frequencies of an Unsymmetrical High Speed Rotor ». Dans ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-55133.

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In order to easily predict and optimize the dynamic behavior of a high speed switched reluctance motor, a full analytic model, that gives directly and quickly the three first eigenfrequencies of the rotor, is proposed. The rotor is modelled as a 3 DOF Timoshenko’s beam model. The stiffness matrix is calculated with the Castigliano’s second theorem in structural analysis, which allows to obtain explicitly the eigenfrequencies expression and prevents to use classical finite element analysis. The influence of design and material modifications is studied and the dynamic behavior quickly predicted. The calculation time needed for testing a geometry is strongly smaller than with a finite element analysis.
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Liu, Pengbo, Songsong Lu, Peng Yan et Zhen Zhang. « Kinetostatics Modeling and Decoupling Analysis of a Crosshair Flexures-Based Nanopositioner ». Dans ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68097.

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In the present paper, we take the input and output decoupling into account and propose a 2-DOF parallel nanopositioner, which is composed of lever amplification mechanisms, compound parallelogram mechanisms and novel crosshair flexures. In order to demonstrate the decoupling performance improvement of the crosshair flexures, the stiffness model of the crosshair flexures and the kinetostatics model of the nanopositioner are established based on Castigliano’s theorem and the compliance matrix method. Accordingly, the input and output decoupling compliance matrix models are derived to demonstrate the excellent decoupling property of the crosshair flexures based nanopositioner, which is further verified by finite-element analysis and experimental results. The open-loop experiments on the prototype stage demonstrate the maximum stroke of the nanopositioner is up to 65μm and the cross axis coupling errors are less than 1.6%.
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Rapports d'organisations sur le sujet "Castigliano"

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Chanse, Victoria, et Jennifer Salazar. Castiglion del Bosco. Landscape Architecture Foundation, 2012. http://dx.doi.org/10.31353/cs0260.

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