Log in

Relevant bibliographies by topics / Multilayer shell / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Multilayer shell.

Dissertations / Theses on the topic 'Multilayer shell'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 31 dissertations / theses for your research on the topic 'Multilayer shell.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Gong, Yuxuan. "Dielectric and Structural Study of Bi2O3-BaO-CuO Glass Flux Additives Sintered Barium Titanate for Multilayer Capacitor Applications." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1368086374.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Harun, Zawati. "Simulation of drying for multilayer investment casting shells." Thesis, Swansea University, 2007. https://cronfa.swan.ac.uk/Record/cronfa42815.

Full text

Abstract:

The number of interacting variables influencing the drying of ceramic shells is large and to explore by experimental means is prohibitive. Therefore, the main advantage of the proposed theoretical model in this work, is that the effect of the drying conditions on their other important parameters (such as saturation, temperature, gas pressure) and transport properties (permeabilities, diffusivity) that control final properties of a multilayer ceramic shell can be investigated without extensive experimentation. This is very important in avoiding shell failure due to incomplete drying. Due to the

APA, Harvard, Vancouver, ISO, and other styles

3

Дубинка, С. Ю. "Моделювання теплових полів в багатошарових системах із заданими граничними умовами". Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/75674.

Full text

Abstract:

Сформована математична задача дослідження, визначені початкові та граничні умови поширення теплової енергії. Виконано моделювання теплового поля, що базувалось на рішенні диференціального рівняння теплопровідності. Розглянуто процес теплопередачі між матеріалами стінки. Розроблено математичну модель при переході температури в оболонці з покриттям. Розроблена комп’ютерна програма в середовищі Matlab. Програмно реалізований чисельний розрахунок температурного поля оболонки.

APA, Harvard, Vancouver, ISO, and other styles

4

Мисловська, М. С. "Розрахунок статичних і динамічних характеристик модифікованої конструкції пристрою автоматичного врівноважуючого пристрою". Master's thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/71740.

Full text

Abstract:

Об’єкт дослідження – процес навантаження і деформування багатошарових композитних торових оболонок. Мета роботи – полягає в розробці методики розрахунку термопружного напруженого стану композитних торових оболонок високого тиску. Методи дослідження – для розв’язання термопружної незв'язаної задачі застосовуються метод сплайн-колокацій, метод Фур’є, метод рядів Тейлора, метод ортогональної прогонки. На основі даних методів cтворений алгоритм і мовою програмування VISUALFORTRAN складена програма розрахунку напружено-деформованого стану багатошарових торових оболонок від дії статичного та темп

APA, Harvard, Vancouver, ISO, and other styles

5

Zhang, Zhifeng. "Bimetallic reversed core-shell nanoparticles : electrochemical synthesis, characterization and application /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202006%20ZHANG.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

BRISCHETTO, SALVATORE. "Classical and mixed multilayered plate/shell models for multifield problems analysis." Doctoral thesis, Politecnico di Torino, 2009. http://hdl.handle.net/11583/2497659.

Full text

Abstract:

Analytical and numerical models have been implemented in this work to study multifield problems for multilayered structures. The dissertation is organized in three main parts: - an extension of the geometrical relations and constitutive equations to multifield problems and multilayered plates and shells; - the introduction of Carrera’s Unified Formualtion (CUF), the use of variational statements, and their extension to multifield problems; - the results of several multifield couplings.

APA, Harvard, Vancouver, ISO, and other styles

7

Brischetto, Salvatore. "Classical and mixed multilayered plate/shell models for multifield problems analysis." Paris 10, 2009. http://www.theses.fr/2009PA100198.

Full text

Abstract:

Des approches analytiques et numériques ont été développées et implémentées dans ce travail afin d’étudier les structures multicouches sous sollicitations multi physiques. Le document est organisé en trois principales parties : une extension des relations géométriques et des lois de comportement aux problèmes multi physiques et aux plaques et coques multicouches; l’introduction de la CUF, des principes variationnels, et leur extension aux problèmes multi physiques; des résultats pour différents problèmes multi physiques couples. Les lois de comportement pour les problèmes multi physiques sont

APA, Harvard, Vancouver, ISO, and other styles

8

Dana, Maxime. "Développement de modèles vibro-acoustiques pour prédire le champ proche d’une coque cylindrique raidie munie de revêtements acoustiques." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI011.

Full text

Abstract:

Les antennes SONAR sont utilisées en lutte sous-marine pour la détection acoustique des navires adverses. Leurs performances dépendent de la capacité de l'antenne et de son traitement par formation de voies à faire ressortir le signal à détecter, et à sa capacité à s'affranchir du bruit de fond environnant après traitement. On cherchera à développer des modèles vibro-acoustiques simulant la réponse en signal au niveau des capteurs d'une antenne de flanc fixée sur la coque résistante du bâtiment. Ces modèles devront prendre en compte des revêtements viscoélastiques fixés sur la coque d'acier et

APA, Harvard, Vancouver, ISO, and other styles

9

Arciniega, Aleman Roman Augusto. "On a tensor-based finite element model for the analysis of shell structures." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3156.

Full text

Abstract:

In the present study, we propose a computational model for the linear and nonlinear analysis of shell structures. We consider a tensor-based finite element formulation which describes the mathematical shell model in a natural and simple way by using curvilinear coordinates. To avoid membrane and shear locking we develop a family of high-order elements with Lagrangian interpolations. The approach is first applied to linear deformations based on a novel and consistent third-order shear deformation shell theory for bending of composite shells. No simplification other than the assumption of linear

APA, Harvard, Vancouver, ISO, and other styles

10

Khazeni, Nasser. "Synthesis And Characterization Of Zirconium Tungstate-zirconia Core-shell Composite Particles." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615316/index.pdf.

Full text

Abstract:

Thermal mismatch between different components of a system could cause of problems like residual stress induced cracking, thermal fatigue or even optical misalignment in certain high technology applications. Use of materials with customized thermal expansion coefficient is a counter-measure to resolve such problems. Zirconium tungstate (ZrW2O8) with negative thermal expansion coefficient is capable of being used in synthesis of composites with tailored coefficient of thermal expansion (CTE). In this work, the sol-gel method which had been already set up in our group was characterized and the so

APA, Harvard, Vancouver, ISO, and other styles

11

VALVANO, STEFANO. "Development of computational efficient shell formulation for analysis of multilayered structures subjected to mechanical, thermal, and electrical loadings." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2675350.

Full text

Abstract:

The aim of this work is the development of robust finite shell model suitable for numerical applications in solid mechanics with a remarkable reduction in computational cost. Two-dimensional (2D) structural models, commonly known as plates/shells, are for instance used in many applications to analyze the structural behavior of thin and slender bodies such as panels, domes, pressure vessels, and wing stiffened panels amongst others. These models reduce the three-dimensional 3D problem into a two-dimensional 2D problem, where variables depend on the in-plane axis coordinates. Two-dimensional ele

APA, Harvard, Vancouver, ISO, and other styles

12

Kpeky, Fessal. "Formulation et modélisation des vibrations par éléments finis de type solide-coque : application aux structures sandwichs viscoélastiques et piézoélectriques." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0008/document.

Full text

Abstract:

Cette thèse s’intéresse au développement d’éléments finis solide–coques dédiés à la modélisation de structures multicouches sollicitées en vibrations. En effet, la plupart des modèles multicouches dans la littérature présentent des limitations dans certaines configurations géométriques et matérielles. Face à ce constat et dans un souci de proposer un outil moins coûteux en temps de calcul, nous avons proposé une approche basée sur le concept solide–coques. Il s’agit d’éléments finis tridimensionnels dont le comportement a été amélioré par l’Assumed Strain Method. Dans un premier temps, nous av

APA, Harvard, Vancouver, ISO, and other styles

13

Cinefra, Maria. "Refined and advanced shell models for the analysis of advanced structures." Thesis, Paris 10, 2012. http://www.theses.fr/2012PA100051/document.

Full text

Abstract:

La thèse est décomposée en trois parties. Dans la première partie, les modèles de la CUF sont présentés. La CUF permet d’obtenir, dans un formalisme générale, de nombreux modèles qui diffèrent 1) selon l’ordre d’expansion dans l'épaisseur choisie pour les variables primaires; 2) selon le type de modèle: modèles couche équivalente (ESL) ou couche discrète (LW); 3) selon le principe variationnel : “Principle of Virtual Displacements” (raffinée) ou “Reissner’s Mixed Variational Theorem” (avancée). Des géométries cylindrique et à double courbure sont traités. La deuxième partie de la thèse est con

APA, Harvard, Vancouver, ISO, and other styles

14

Christé, Suzanne. "Preparation of multifunctional polymer@gold nanostructures and assembly into multilayered thin films for biosensing." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22571.

Full text

Abstract:

Mestrado em Química Inorgânica e Materiais<br>O objetivo desta tese de mestrado era desenvolver nanoestruturas robustas e multifuncionais do tipo coroa@núcleo para servir como base num sensor biológico. A estabilidade e as propriedades óticas das nanopartículas de ouro (Au NPs), nomeadamente a ressonância de plasmão de superfície localizada (LSPR), tornam as excelentes candidatos para o desenvolvimento de biossensores baseados em SPR. No seguimento de um trabalho anterior, procedeu-se primeiro à otimização da encapsulação e funcionalização dasAu NPs. Em segundo lugar, preparou-se filmes finos

APA, Harvard, Vancouver, ISO, and other styles

15

Didier, Jérôme. "Etude du comportement au flambage des coques cylindriques multicouches métal/matériau mousse sous chargements combinés pression interne/cisaillement/flexion." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0069/document.

Full text

Abstract:

De nombreuses structures spatiales telles que les lanceurs sont équipées d’une mousse de protection thermique. Cette couche de matériau extrêmement léger présente d’excellentes propriétés d’isolation thermique mais des caractéristiques mécaniques très faibles. Il est ici proposé d’analyser le comportement au flambage de ce type de construction où une fine et légère structure, coque cylindrique en aluminium avec un ratio R/t de 665, est recouverte par une épaisse couche de mousse de faible densité. Afin d'évaluer l'effet du comportement au flambage de ce type de coque multicouche, des essais ex

APA, Harvard, Vancouver, ISO, and other styles

16

IURLARO, LUIGI. "Development of refined models for multilayered composite and sandwich structures: analytical formulation, FEM implementation and experimental assessment." Doctoral thesis, Politecnico di Torino, 2015. http://hdl.handle.net/11583/2606162.

Full text

Abstract:

Over the last three decades, composite materials have been increasingly used in different engineering field due to their high stiffness-to-weight and strength-to-weight ratios. Nowadays, relatively thick laminated composite and sandwich materials with one hundred or more layers find their applications in primary load-bearing structural components of the modern aircraft. To ensure a reliable design and failure prediction, accurate evaluation of the strain/stress state is mandatory. A high-fidelity analysis of multilayered composite and sandwich structures can be achieved by adopting detailed 3D

APA, Harvard, Vancouver, ISO, and other styles

17

Tran, Huu Viet. "Contribution à l’étude de flambage des coques cylindriques minces raidies et non-raidies : Vers une optimisation des règles de dimensionnement." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI067.

Full text

Abstract:

Ce travail de recherche répond aux besoins actuels et futurs dans le domaine de l’Aérospatial de faire évoluer les règles de dimensionnement au flambage des réservoirs structuraux de l’Etage Principal Cryogénique (EPC) des lanceurs. Ces réservoirs, composés de coques cylindriques, peuvent être associés à un faible raidissage en termes de masse ajoutée. L’objectif d’alléger le lanceur pour optimiser la charge utile, conduit au choix de coques constitutives de plus en plus minces, le risque de flambage sous diverses sollicitations est donc d’autant plus accru. Le dimensionnement au flambage de l

APA, Harvard, Vancouver, ISO, and other styles

18

Dau, Frédéric. "Un Elément fini C1 de coque à double courbure basé sur un modèle raffiné pour les problèmes linéaires et non linéaires de structures composites." Paris, ENSAM, 2004. http://www.theses.fr/2004ENAM0006.

Full text

Abstract:

Nous présentons dans ce travail un élément fini C1 de coque à double courbure pour répondre aux exigences actuelles de prédimensionnement des structures coques composites. Dans cet esprit, nous mettons en oeuvre un nouvel élément fini triangulaire, basé sur une méthode conforme:-dont la géométrie est décrite exactement par l'utilisation d'une carte explicite,-basé sur un modèle raffiné permettant de satisfaire la continuité des contraintes de cisaillement transverse aux interfaces et sur les faces libres de la coque et donc, de s'affranchir de l'emploi de coefficients correcteurs, dont les pri

APA, Harvard, Vancouver, ISO, and other styles

19

Данільцев, В. В. "Міцність конструкцій зі склопластику з міжшаровими дефектами структури матеріалу". Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/46034.

Full text

Abstract:

У дисертаційній роботі вирішений ряд важливих науково-технічних завдань, які включають в себе обґрунтування моделей і методик розрахунку напружено-деформованого та термопружного стану багатошарових оболонок обертання з міжшаровими дефектами структури. Розроблено та апробовано методику визначення інтегральних термопружних характеристик композитів шаруватої структури, запропоновано алгоритм визначення коефіцієнтів теплового лінійного розширення та теплопровідності багатошарового анізотропного матеріалу. Визначений термопружний деформований стан багатошарових оболонок обертання. Розв’язано задачу

APA, Harvard, Vancouver, ISO, and other styles

20

Crisafulli, Daniela. "Advanced modelling of multilayered composites and functionally graded structures by means of Unified Formulation." Thesis, Paris 10, 2013. http://www.theses.fr/2013PA100055/document.

Full text

Abstract:

La plupart des problèmes d'ingénierie des deux derniers siècles ont été résolus grâce à des modèles structuraux pour poutres, plaques et coques. Les théories classiques, tels que Euler-Bernoulli, Navier et de Saint-Venant pour les poutres, et Kirchhoff-Love et Mindlin-Reissner pour plaques et coques, ont permis de réduire le problème générique 3-D, dans le problème unidimensionnel pour les poutres et deux dimensionnelle pour les coques et les plaques. Théories raffinés d'ordre supérieur ont été proposées au cours du temps, comme les modèles classiques ne consentez pas à d'obtenir une complète

APA, Harvard, Vancouver, ISO, and other styles

21

Paroissien, Jeanne. "Développement de modèles éléments finis de types volumique, volume-coque et volume-poutre pour l’analyse du comportement des structures multicouches en bois assemblées par des goujons." Electronic Thesis or Diss., Compiègne, 2025. http://www.theses.fr/2025COMP2844.

Full text

Abstract:

Les structures multicouches en bois, assemblées par des goujons en bois densifié, constituent une solution durable et innovante pour le secteur de la construction. Le développement de modèles prédictifs par éléments finis nécessite une représentation volumique de la géométrie pour modéliser le comportement mécanique complexe de ces structures. Cependant, les modèles volumiques sont couteux, notamment dans le cadre des études de variabilité et d’optimisation. Dans cette thèse, des approches de types volumique, volume-coque et volume-poutre, sont développées pour obtenir des modèles précis et qu

APA, Harvard, Vancouver, ISO, and other styles

22

Steeves, John Bradley. "Multilayer Active Shell Mirrors." Thesis, 2015. https://thesis.library.caltech.edu/8902/1/JohnSteeves_Thesis_2015_Final.pdf.

Full text

Abstract:

<p>This thesis presents a novel active mirror technology based on carbon fiber composites and replication manufacturing processes. Multiple additional layers are implemented into the structure in order to provide the reflective layer, actuation capabilities and electrode routing. The mirror is thin, lightweight, and has large actuation capabilities. These features, along with the associated manufacturing processes, represent a significant change in design compared to traditional optics. Structural redundancy in the form of added material or support structures is replaced by thin, unsupported l

APA, Harvard, Vancouver, ISO, and other styles

23

Ming-huai, Tsai, and 蔡明輝. "Preparation and Characterization of Au/Ag core/shell Nanoparticles and Au Nanoparticle multilayer." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/utas8u.

Full text

Abstract:

碩士<br>元培科學技術學院<br>影像醫學研究所<br>94<br>This thesis has three subjects which are preparation and characterization of gold/silver core/shell nanoparticles、preparation and characterization of silver nanoparticles use gamma-irradiation and preparation and characterization of gold nanoparticles multilayer. In the preparation of gold/silver core/shell nanoparticles、this research had demonstrated that employ different concentration of gold seed can produce different size of gold/silver core/shell nanoparticles. Moreover、change order of medicament、addition rate of reluctant、and addition opportune moment o

APA, Harvard, Vancouver, ISO, and other styles

24

蔡宜展. "Enhancing upconversion luminescence of Nd3+-doped NaYF4 multilayer core-shell nanoparticles in aqueous by low refractive index resonant waveguide grating." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/g4crrj.

Full text

Abstract:

碩士<br>國立中正大學<br>物理系研究所<br>105<br>The present work reports super-intensifying enhancement in the upconversion emission of Tm3+ in NaYF4 host matrix, via a two strategies, (a) fabrication of Nd3+-doped upconversion nanoparticles (UCNPs) with multilayer core-shell structure (NaYF4:Yb,Tm@NaYF4:Yb,Nd@NaYF4) and (b) deposition of Nd3+-doped UCNPs on the surface of low refractive index resonant waveguide grating (RWG) in aqueous environment. Firstly, a highly luminescent 795 nm excited Nd3+-doped upconversion nanoparticles (UCNPs) is synthesized to overcome the overheating effect and signiﬁcantly imp

APA, Harvard, Vancouver, ISO, and other styles

25

高雁綾. "Sensitivity assays for human cardiac troponin I using low refractive index resonant waveguide grating and Nd3+-doped NaYF4 multilayer core-shell structure upconversion bioprobes." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/34xrd7.

Full text

Abstract:

碩士<br>國立中正大學<br>物理系研究所<br>106<br>Highly luminescent 793 nm excited Nd3 +-doped up-conversion nanoparticles (UCNPs) have shown great promise in bio-applications, benefiting from the high tissue penetration depth and low tissue overheating effect at 793 nm. Furthermore, as the Nd3+-doped UCNPs are deposited on a low refractive index resonant waveguide grating (RWG) in aqueous environment, UCL generated from the UCNPs can be greatly enhanced thanks to the guided mode resonance (GMR) enhanced excitation field atop of the RWG. Therefore, the combination of UCNPs bioprobe and low refractive index RW

APA, Harvard, Vancouver, ISO, and other styles

26

Wu, Yi-Hsien, and 吳宜憲. "A generalized thermoelasticity problem of multilayered conical shells." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/03079841614371827940.

Full text

Abstract:

博士<br>國立中興大學<br>應用數學系<br>92<br>The problem of the two-dimensional axisymmetric quasi-static coupled thermoelastic transient response for the laminated circular conical shells and rotating annular multilayered cylinder subjected to arbitrary boundary conditions is presented. The analysis is carried out using a hybrid Laplace transformation and finite difference method. The present method divides the governing differential equations and boundary conditions into the finite difference method and then removes the time dependences from the discretized equations with the Laplace transform. The soluti

APA, Harvard, Vancouver, ISO, and other styles

27

Khatri, Kamal N. "Vibration and damping analysis of multilayered conical shells." Thesis, 1989. http://localhost:8080/iit/handle/2074/4961.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Wu, Jang-Ann, and 吳正安. "Application of the DQM to the Multilayered Cylindrical Shells." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/12642424250613808703.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Chen, Zhi-Long, and 陳志龍. "Preparation and Electromagnetic Properties of Multilayered Core-Shell Structure of Polyaniline/Silica-Coated Iron Oxide Nanoparticles." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/05947487694382888041.

Full text

Abstract:

碩士<br>國立高雄應用科技大學<br>化學工程系碩士班<br>95<br>The purpose of this article is to carry out studies on synthesis and characterization of the multilayered polyaniline/silica-coated iron oxide nanocomposites. Two synthesis steps are involved in this work, first is about the preparation of core-shell silica-coated iron oxide nanoparticles. The core-shell structured nanoparticles can be prepared through the well known Stöber process. Second is concerning about the synthesis of multilayered core-shell structure of polyaniline/silica-coated iron oxide nanocomposites by in-situ polymerizing polyaniline on the

APA, Harvard, Vancouver, ISO, and other styles

30

Li, Po-Hsing, and 李柏興. "Preparation and Electromagnetic Properties of Multilayered Core-Shell Structure of Polypyrrole/Silica-Coated Ni-Zn ferrite Nanoparticles." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/97729334576098433916.

Full text

Abstract:

碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系<br>98<br>Polypyrrole coated-silica/Ni-Zn ferrite(PPy/SiO2/Ni-Zn ferrite) composites were synthesized by an in-situ polymerization method, where pyrrole (Py), cetyltrimethyl ammonium brombide (CTAB), camphorsulfonic acid(CSA) and SiO2/Ni-Zn ferrite nanoparticle act as monomer, surfactant and nuclear, respectively, in which the SiO2/Ni-Zn ferrite nanoparticle was prepared by the combination of the combustion and the modified Stöber method. Results showed that the thickness of silica coating on the surface of Ni-Zn ferrites nanoparticles increased gradually with inc

APA, Harvard, Vancouver, ISO, and other styles

31

Sipahi, Rabia. "Alginate-Based Edible Coating to Enhance Quality and Shelf-Life of Fresh-Cut Watermelon (Citrullus Lanatus)." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11866.

Full text

Abstract:

Fresh-cut watermelon is appreciated for its taste, flavor, and juiciness. However, there are challenges in maintaining the freshness since fresh-cut processing of fruits promotes faster deterioration. Our objective was to determine the effectiveness of multilayered antimicrobial edible coating on the shelf-life of fresh-cut watermelon while keeping its original attributes for longer, without affecting its sensory properties. A set of solutions containing sodium alginate (0.5, 1, 2% w/w), beta-cyclodextrin, trans-cinnamaldehyde (antimicrobial agent), pectin, and calcium lactate were used as coa

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!