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Dissertations / Theses on the topic 'Non linear FEM analysis'

Author: Grafiati

Published: 18 April 2022

Last updated: 30 July 2025

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1

Ulfberg, Adrian. "Probabilistic non-linear finite element analysis of concrete buttress dams." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72701.

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Assessment of concrete buttress dams today consists of using analytical methods to investigate the stability in different failure modes. However, they simplify the problem at hand and neglect certain important features linked to geometry and thus not truthfully appraise the structures real stability. This could be economically costly in assessments of both existing dam structures as this would eventually lead to unwarranted rehabilitation. The same can be said for dams under design. Kalhovd dam is a concrete buttress dam that has recently undergone assessment where certain sections proved u

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2

Teklemariam, Daniel Mekonnen, and Bennie Hamunzala. "Design of Thick Concrete Beams : Using Non-Linear FEM." Thesis, KTH, Bro- och stålbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189141.

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The experimental studies performed on the behaviour of very thick concrete beams subjected to static loads have revealed that the shear mechanisms play an important role in the overall response and failure behaviour. The aim of this thesis is to recommend suitable design methods for thick concrete beams subjected to off-centre static concentrated load according Eurocode 2 by using non-linear finite element analysis (NLFEA). To achieve this task, Abaqus/Explicit has been used by employing constitutive material models to capture the material non-linearity and stiffness degradation of concrete. C

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3

Pablos, Rabano Alejandro. "Modeling of a PMSynRel stator with concentrated windings using FEM and non-linear reluctance networks." Thesis, KTH, Elektrisk energiomvandling, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124543.

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Permanent magnets synchronous reluctance (PMSynRel) motors are attractive due to their high torque density and because a lower quantity of permanent magnets is necessary in comparison with other permanent magnet machines. This thesis deals with the analysis of PMSynRel machines using a finite element method (FEM) and reluctance networks. First, a PMSynRel machine model is built in order to carry out simulations using a finite element method package. The effect of different design parameters such as the combination of the number of poles and slots, the number of flux barriers or the number of m

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4

Lee, Chun Hung. "Non-Linear Contact Analysis of Meshing Gears." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/236.

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Gear transmission systems are considered one of the critical aspects of vibration analysis, and it contains various potential faults such as misalignment, cracks, and noise. Therefore, it requires vibration monitoring to ensure the system is operating properly. Case mounted accelerometers are frequently used to monitor frequencies in a system. However, it is not a simple task to identify and interpret the acceleration data since there are many gear mesh frequencies present. One of the approaches utilized by researchers to perform gear diagnostic is Finite Element Modeling. This study focuses o

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5

Selli, Nicola. "Static and seismic analysis of a historic masonry building in San Pio delle Camere." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022.

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In February 2021, in San Pio delle Camere, on the Navelli plateau south-east of L'Aquila, a masonry building collapsed suddenly, after repair work had just begun on the damage caused by the 2009 earthquake. The current study, after a detailed examination of all the design documentation and the comparison of the post-earthquake damage with the results of the analysis on the model, finding an excellent correspondence, went to research the possible causes of the structural collapse, which occurred in static conditions. The masonry texture was then analysed, consisting of unworked natural stones o

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6

Ren, Honghao. "Experimental and numerical analysis of orthotropic deformations of wood using Finite Strain Theory (large deformations) and the Finite Element Method (FEM) in 2D." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-104778.

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This thesis involves the derivation of a constitutive model under large deformationtheory using Updated Lagrange method applied on an orthotropic material.Thefollowing aspects are included in this thesis work: introduction, theory, FEM implementation, derivation of constitutive model, calibration, result, discussion, conclusion and the future work. This thesis studies the deformation behavior of wood, which is widely used as aconstruction material, in an advanced and more detailed way by analyzing the mechanical properties of wood from both, the application in laboratory and theoreticalcalcula

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7

Jonsson, Karl. "Two Problems in non-linear PDE’s with Phase Transitions." Licentiate thesis, KTH, Matematik (Avd.), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223562.

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This thesis is in the field of non-linear partial differential equations (PDE), focusing on problems which show some type of phase-transition. A single phase Hele-Shaw flow models a Newtoninan fluid which is being injected in the space between two narrowly separated parallel planes. The time evolution of the space that the fluid occupies can be modelled by a semi-linear PDE. This is a problem within the field of free boundary problems. In the multi-phase problem we consider the time-evolution of a system of phases which interact according to the principle that the joint boundary which emerges

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8

Desai, D. A. "Comparative non-linear simulation of temperature profiles induced in an exhaust manifold during cold-starting." Journal for New Generation Sciences, Vol 8, Issue 1: Central University of Technology, Free State, Bloemfontein, 2010. http://hdl.handle.net/11462/549.

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Published Article<br>The simulation of an exhaust manifold's thermal behaviour is an important concern for various reasons. Amongst them is the need to minimise catalyst light-offtime as significant exhaust emissions are generated within this period. Modelling such behaviour is not simplistic as it is governed by complex interactions between exhaust gas flow and the manifold itself. Computational fluid dynamics (CFD) is a powerful tool for such simulations. However its applicability for transient simulations is limited by high central processing unit (CPU) demands. The present study proposes a

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9

Gulavani, Omkar Vitthal. "Non-linear finite element analysis led design of a novel aircraft seat against certification specifications (CS 25.561)." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/8352.

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Seeking to quench airliners’ unending thirst for lightweight, reliable and more comfortable seating solutions, designers are developing a new generation of slim economy – class seats. Challenge in front of the designers is to carve out additional “living space”, as well as to give a “lie – flat” experience to air travellers with strict adherence to safety regulations. Present research tries to address all these industry needs through an innovative and novel “Sleep Seat”. A generous angle of recline (40 degree), movement of “Seat Pan” along the gradient, fixed outer shell of backrest, and uniqu

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10

Ferrari, Rosalba (ORCID:0000-0002-3989-713X). "An elastoplastic finite element formulation for the structural analysis of Truss frames with application to ha historical iron arch bridge." Doctoral thesis, Università degli studi di Bergamo, 2013. http://hdl.handle.net/10446/28959.

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This doctoral thesis presents a structural analysis of the Paderno d’Adda Bridge, an impressive iron arch viaduct built in 1889 and located in Lombardia region (Italy). The thesis falls in the context of a research activity started at University of Bergamo since 2005, that is still ongoing and aims to perform an evaluation of the present state of conservation of the bridge. In fact, the bridge is currently still in service and its important position in the context of transport network will soon lead to questions about its future destination, with particular attention to the evaluation of the

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11

Yan, Charlotte. "Vaildation of nonlinear FE-simulation for design improvement." Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-114592.

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The aim of the project is to develop a model, which is going to be used for mass reduction of a standard profile of aluminium seat rails in Aircraft structure. Using nonlinear analysis including plasticity and material failure laws the effect of changes in geometry vs. ultimate load is analysed (ABAQUS 6.11). First, the non-linear model used is validated with experimental testing: Boundary conditions and material properties are adjusted based on load displacement curves, strain gauges information and failure patterns. Less than 1% deviation is achieved between simulation and testing. An inclus

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12

Pham, Anh Tu. "Détermination numérique des propriétés de résistance de roches argileuses." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1237/document.

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Les capacités de résistance de l'argilite Callovo-Oxfordian (COx), qui est une roche hôte potentielle pour le dépôt souterrain profond de déchets radioactifs de haute activité en France, sont étudiées. À une échelle microscopique, des micros pores peuvent être observés dans la matrice. Une première étape d'homogénéisation a été réalisée afin d'évaluer le critère de résistance de la matrice. L'analyse microstructurale de ce matériau à quelques centaines d'échelle, référencée échelle échelle mésoscopique, montre une matrice argileuse et une distribution aléatoire d'inclusions minérales (quartz e

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13

Jindra, Daniel. "Stanovení požární odolnosti konstrukcí." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392030.

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Possibilities of modeling non-linear behavior of concrete within standard room temperatures and increased fire-load values using FEM software ANSYS are studied. Temperature dependences of material models are considered. Fire resistance of reinforced concrete and concrete-steel composite construction is analyzed. Fire loads are defined in accordance with relevant standards. Non-linear structural transient analyses are calculated after temperatures were determined by transient thermal analyses. Results obtained from analyses of simple reinforced concrete structure are compared with approach of i

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14

Singh, Subrat, and Shreedhara Sreehari Veditherakal. "CAE modelling of cast aluminium in automotive structures." Thesis, Linköpings universitet, Mekanik och hållfasthetslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-162190.

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In the automobile industry, there is a big push for the automotive car manufacturers to base engineering decisions on the results of Computer Aided Engineering (CAE) solutions, and to transform the prototyping and testing, from a costly iterative process to a final verification and validation step. The variability in components material properties and environmental conditions together with the lack of knowledge about the underlying physics of complex systems often make it impractical to make reliable predictions based on only deterministic CAE models. One such area is the CAE modelling of cast

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15

Denimal, Enora. "Prédiction des instabilités de frottement par méta-modélisation et approches fréquentielles : Application au crissement de frein automobile." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEC039/document.

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Le crissement de frein est une nuisance sonore qui représente des coûts importants pour l'industrie automobile. Il tire son origine dans des phénomènes complexes à l'interface frottante entre les plaquettes de frein et le disque. L'analyse de stabilité reste aujourd'hui la méthode privilégiée dans l'industrie pour prédire la stabilité d'un système de frein malgré ses aspects sur- et sous-prédictifs.Afin de construire un système de frein robuste, il est nécessaire de trouver la technologie qui permette de limiter les instabilités malgré certains paramètres incertains présents dans le système. A

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16

Saint-Georges, Pascal. "Iterative Solution of Linear Systems for FEM Structural Analysis." Doctoral thesis, Universite Libre de Bruxelles, 1996. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212345.

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17

Strandell, Gustaf. "Linear and Non-linear Deformations of Stochastic Processes." Doctoral thesis, Uppsala : Matematiska institutionen, Univ. [distributr], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3689.

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18

Jeang, Fure Lin. "Non-linear analysis of concrete fracture /." Thesis, Connect to this title online; UW restricted, 1985. http://hdl.handle.net/1773/10133.

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19

Patil, Anupkumar. "Non-linear dynamical analysis of biosignals." Thesis, University of Strathclyde, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.502349.

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Biosignals are physiological signals that are recorded from various parts of the body. Some of the major biosignals are electromyograms (EMG), electroencephalograms (EEG) and electrocardiograms (ECG). These signals are of great clinical and diagnostic importance, and are analysed to understand their behaviour and to extract maximum information from them. However, they tend to be random and unpredictable in nature (non-linear). Conventional linear methods of analysis are insufficient. Hence, analysis using non-linear and dynamical system theory, chaos theory and fractal dimensions, is proving t

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20

Saneinejad, Abolghasem. "Non-linear analysis of infilled frames." Thesis, University of Sheffield, 1990. http://etheses.whiterose.ac.uk/1801/.

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This thesis is concerned with the analysis of building frames acting compositely with infilling wall panels. The significance of the composite action is emphasized and previous work on infilled frames is reviewed. The existing methods of analysis are categorized and their analytical assumptions are highlighted. It is concluded that more accurate results may be obtained from the development of a non-linear finite element analysis. The finite element method is reviewed and new elements for representing beams, interfaces and loading are developed. Failure criteria for concrete under multiaxial st

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21

Almeida, Ricardo Miguel Moreira de. "Foundations of nonstandard non-linear analysis." Doctoral thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/2937.

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Doutoramento em Matemática<br>Esta tese insere-se na área da análise não-standard não linear. São dois os objectivos principais deste trabalho. Um deles envolve diferenciabilidade de funções e o outro geometria diferencial. O nosso trabalho é dividido em três partes. Na primeira apresentamos uma caracterização não-standard de conjuntos compactos conexos em espaços métricos. Na segunda parte exibimos alguns resultados envolvendo o teorema do valor médio para espaços normados. De seguida é apresentado um novo tipo de diferenciabilidade, a mu-diferenciabilidade. Fazemos um estudo exaustivo das pr

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22

Zhou, Zhengming. "Non-linear elastic modelling of coupled deformation, heat, air and moisture transfer in unsaturated soil." Thesis, Cardiff University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360637.

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23

Pecorella, Daniele. "Methodology for the design and optimization of a morphing wing droop-nose structure for greener aircraft." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022.

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Droop-Nose Leading Edge (DNLE) morphing wings are one of the most promising devices in order to achieve aerodynamic drag and noise reduction during take-off and landing phases. An accurate design of these structures could lead to the decrease of aircraft fuel consumption in the perspective of reaching a greener aviation, following the objectives indicated by Flightpath 2050 issued by the E.U. However, due to the challenges related to the realization of this technology and TRL reached, DNLE are more likely implemented in Unmanned Aerial Systems (UAS) for testing and evaluation purposes. In the

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24

Moeanaddin, Rahim. "Aspects of non-linear time series analysis." Thesis, University of Kent, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328463.

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25

Tomlin, Alison Sarah. "Bifurcation analysis for non-linear chemical kinetics." Thesis, University of Leeds, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255345.

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26

NOGUEIRA, CHRISTIANNE DE LYRA. "NON LINEAR ANALYSIS OF EXCAVATIONS AND EMBANKMENTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1998. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=2136@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>O principal objetivo desta tese consiste no desenvolvimento e aplicação de um programa computacional, ANLOG (Análise Não Linear de Obras Geotécnicas), para análises de problemas geotécnicos com acoplamento de fluxo e deformação, e considerando relações constitutivas não lineares na modelagem do solo. A nível global, a solução do sistema de equação não linear originado da formulação via MEF deste problema é feita através do método de Newton-Raphson Modificado com incrementos automáticos de carga e tempo. Enquanto que, a ní

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27

Mallinder, P. A. "The non-linear analysis of masonry arches." Thesis, Sheffield Hallam University, 1988. http://shura.shu.ac.uk/20006/.

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The objective of the research programme has been to investigate the problems besetting the national masonry arch bridge stock and topropose enhanced means of appraisal accordingly. The programme has involved site assessments and limited experimentation together with limit state and serviceability analyses. All theoretical and empirical studies have been mounted as micro-computer software and are supported by computer graphics. Throughout, the accent is on engineering requirements in practice; the almost universal absence of as-built drawings and the involvement of natural materials whose mecha

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28

Wang, Wei. "CAUSAL MEDIATION ANALYSIS FOR NON-LINEAR MODELS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1332961697.

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29

Kahraman, Ahmet. "Non-linear dynamic analysis of geared systems /." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487676847117141.

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30

Cain, Jeffrey S. (Jeffrey Stuart) Carleton University Dissertation Engineering Mechanical and Aerospace. "Non-linear analysis of a gyroscopic rotor." Ottawa, 1996.

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31

Latini, Corazzini Valentina. "Non-linear dynamic analysis of offshore structures." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amslaurea.unibo.it/359/.

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32

Su, Fei. "Statistical analysis of non-linear diffusion process." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/2776.

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In this paper, we study the problem of statistical inference of continuous-time diffusion processes and their higher-order analogues, and develop methods for modeling threshold diffusion processes in particular. The limiting properties of such estimators are also discussed. We also proposed the likelihood ratio test statistics for testing threshold diffusion process against its linear alternative. We begin in Chapter 1 with an introduction of continuous-time non-linear diffusion processes where I summarized the literature on model estimation. The most natural extension from affine to non-linea

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33

Frazer, Gordon John. "Aspects of time-varying non Gaussian non-linear signal analysis." Thesis, Queensland University of Technology, 1996. https://eprints.qut.edu.au/105546/1/T%28BE%26E%29%201032%20Aspects%20of%20time-varying%20non-Gaussian%20non-linear%20signal%20analysis.pdf.

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This thesis addresses problems in the field of time-varying, non-Gaussian, non-linear signal processing. It concentrates on developing results in the areas of time-frequency signal analysis and higher-order spectra which are linked by the developing area of time-varying higher-order spectra. Motivation comes from applying procedures developed to underwater acoustic signals. Reviews of time-frequency analysis and higher-order spectra precede the research contributions. Three appendices cover: a review of the multiple-window spectrum estimation method, an improved procedure for computing analyt

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34

Chadwick, Mark Anthony. "Identification and analysis of linear and non-linear fast-sampled systems." Thesis, University of Sheffield, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489362.

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This thesis presents an investigation into the identification and analysis of and non-linear fast-sampled systems. Traditionally, discrete-time sampled-data systems are represented using shift-operator parameterisations utilising the d-operator. An alternative parameterisation using the q-operator is explored and shown to maintain a close correspondence to the continuous-time. This approach offers the ability to unify discrete and continuous-time theory as each can be considered a special case of the d-operator approach. In addition, these parameterisations possess numerical advantages when co

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35

Moro, Lorenzo. "Structure borne noise due to marine diesel engines: experimental study and numerical simulation for the prediction of the dynamic behaviour of resilient mounts." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11114.

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2013/2014<br>Gli alti livelli di comfort che sono richiesti oggigiorno a bordo di navi da crociera e mega-yachts, portano i progettisti a concentrare la loro attenzione sul problema del rumore strutturale. I motori diesel quattro tempi che sono installati a bordo nave come motori principali o diesel generatori, sono tra le principali sorgenti di rumore strutturale. Per questa ragione, al fine di ridurre l’energia vibrazionale generata da queste sorgenti e trasmessa, tramite le strutture nave, ai locali alloggio, i motori diesel sono sospesi mediante elementi resilienti. Tali elementi resilient

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36

Morgenthaler, Michael J. E. "Non-linear optical studies of surfaces." Thesis, Heriot-Watt University, 1993. http://hdl.handle.net/10399/1430.

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37

Wilson, Jonathan P. "Non-linear dynamics and power systems." Thesis, University of Bath, 2000. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341136.

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38

Kang, Lan. "Linear and non-linear free vibration analysis of plates and shallow shells." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0025/MQ30714.pdf.

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39

Subramaniam, Laxman. "Linear and non-linear free vibration analysis of axisymmetric solids and structures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0011/MQ30743.pdf.

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40

Stang, Jorgen. "Iterative methods for linear and geometrically non-linear parallel finite element analysis." Thesis, Heriot-Watt University, 1995. http://hdl.handle.net/10399/743.

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41

Nemakhavhani, Daniel Phuluwani. "Palatalization and labialization in Tshivenda : a linear and non-linear phonological analysis." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52984.

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Thesis (MA)--Stellenbosch University, 2002.<br>ENGLISH ABSTRACT: This study focuses on two phonological processes occurring in Venda, i.e. on palatalization and labialization. Two phonological models are applied to describe these phenomena: a traditional (linear) phonological model, the Transformational Generative model of Chomsky and Halle (1968), and a non-linear Feature Geometry model of Clements (1985). This was done in order to ascertain which model would be more effective in its coverage of these sound changes. The core concepts of each model were described and the sound system of

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42

Le, Thanh Nam. "Non-linear Dynamic analysis of corotational beam structures." Thesis, KTH, Bro- och stålbyggnad, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-36799.

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43

Ntantis, Efstratios. "Capability expansion of non-linear gas path analysis." Thesis, Cranfield University, 2008. http://dspace.lib.cranfield.ac.uk/handle/1826/3790.

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The performance diagnostics of any engine model is accomplished by estimating a set of internal engine health parameters from available sensor measurements. These sensors which comprises of a variety of gas path measurements e.g. pressures, temperatures, fuel flow and spool speeds provide information regarding the health of the engine. No physical measurement, however, elaborate or precise, or how often repeated, can ever completely eliminate the universal presence of measurement uncertainties. Instrument measurements are often distorted by noise and bias, thereby masking the true condition of

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44

Kenyon, Jonn Mark. "Non-linear analysis of reinforced concrete plane frames /." Title page, table of contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phk368.pdf.

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45

Hata, Misako. "Non linear tolerance analysis by response surface methodology." Ohio : Ohio University, 2001. http://www.ohiolink.edu/etd/view.cgi?ohiou1173897314.

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46

Elizalde, Siller Hugo Ramon. "Non-linear modal analysis methods for engineering structures." Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419886.

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47

Chaikittiratana, Arisara. "Non-linear viscoelastic strain analysis for engineering polymers." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342239.

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48

Afroozi, Milani Mohammad. "Non-linear analysis of optical and microwave sources." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6675/.

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Due to the ever increasing need for better and more capable communication systems, a large quantity of research is focused on the design and simulation of different sections of communication systems including the communication sources. Due to the massive cost of the fabrication involved in designing new communication sources, the accurate modelling and design of these sources using Computer Aided Design is of great interest. In this thesis fundamentals of laser modelling and nonlinear microwave antenna design; followed by reviewing the most important works carried out by other researchers in t

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49

Hong, Andrew C. (Andrew Choon-Ki). "Non-linear analysis of cello pitch and timbre." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/67119.

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50

Madigoe, Mashikane William. "Syllable structure processes in Northern Sotho : a linear and non-linear phonological analysis." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53608.

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Thesis (MA)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: This study intends to describe and explain syllable structure processes in Northern Sotho. It deals with phonological processes such as vowel deletion, semivocalization and semivowel insertion. The major aim of these processes is to restore the preferred ICVI syllable structure which has been violated by morphological processes such as passive, diminutive, the construction of absolute pronouns, etc. Two phonological models are applied with the intention to determine the one that presents the most credible explanation for th

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