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Gotowa bibliografia na temat „Dissipative analysis”

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Data publikacji: 17 lipca 2024

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Artykuły w czasopismach na temat "Dissipative analysis"

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DESMARAIS, MATHIEU, i RACHID AISSAOUI. "MODELING OF KNEE ARTICULAR CARTILAGE DISSIPATION DURING GAIT ANALYSIS". Journal of Mechanics in Medicine and Biology 08, nr 03 (wrzesień 2008): 377–94. http://dx.doi.org/10.1142/s021951940800267x.

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Articular cartilage dissipates contact loads according to three dissipative mechanisms: frictional drag, intrinsic viscoelasticity, and surface friction. Estimation of dissipation due to these three mechanisms during gait is required to understand the dissipative properties of articular cartilage. Fourteen healthy subjects performed a gait analysis on treadmill. Tibiofemoral contact forces were estimated from inverse dynamic analysis and from a reductionist knee contact model. These contact forces and the results obtained from a preloading creep simulation were introduced into a biphasic poroviscoelastic articular cartilage model, and a one-dimensional confined compression was performed. Articular dissipation from each dissipative mechanism was estimated. Sensitivity analysis was performed to determine the effects of material parameters and length of the preloading simulation on the patterns of the dissipative mechanisms. Dissipative force patterns for all dissipative mechanisms were found to be similar to those of tibiofemoral contact forces. Frictional drag was found to be the dominant dissipative mechanism. The initial permeability and the viscoelastic spectrum parameters were found to have an important impact on the magnitude of the peaks of dissipative patterns. If appropriate material parameters are introduced, this model could be used to compare the difference between healthy and osteoarthritic human articular cartilage.
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Taniue, Shogo, i Shuichi Kawashima. "Dissipative structure and asymptotic profiles for symmetric hyperbolic systems with memory". Journal of Hyperbolic Differential Equations 18, nr 02 (czerwiec 2021): 453–92. http://dx.doi.org/10.1142/s0219891621500144.

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We study symmetric hyperbolic systems with memory-type dissipation and investigate their dissipative structures under Craftsmanship condition. We treat two cases: memory-type diffusion and memory-type relaxation, and observe that the dissipative structures of these two cases are essentially different. Namely, we show that the dissipative structure of the system with memory-type diffusion is of the standard type, while that of the system with memory-type relaxation is of the regularity-loss type. Moreover, we investigate the asymptotic profiles of the solutions for [Formula: see text]. In the diffusion case, it is proved that the systems with memory and without memory have the same asymptotic profile for [Formula: see text], which is given by the superposition of linear diffusion waves. We have the same result also in the relaxation case under enough regularity assumption on the initial data.
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Fusco, G., i M. Oliva. "Dissipative systems with constraints". Journal of Differential Equations 63, nr 3 (lipiec 1986): 362–88. http://dx.doi.org/10.1016/0022-0396(86)90061-6.

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LIANG, JIANFENG. "HYPERBOLIC SMOOTHING EFFECT FOR SEMILINEAR WAVE EQUATIONS AT A FOCAL POINT". Journal of Hyperbolic Differential Equations 06, nr 01 (marzec 2009): 1–23. http://dx.doi.org/10.1142/s0219891609001745.

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For semi-linear dissipative wave equation □u + |ut|p - 1ut = 0, we consider finite energy solutions with singularities propagating along a focusing light cone. At the tip of cone, the singularities are focused and partially smoothed out under strong nonlinear dissipation, i.e. the solution gets up to 1/2 more L2 derivative after the focus. The smoothing phenomenon is in fact the result of simultaneous action of focusing and nonlinear dissipation.
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Wang, Tao, Ji-jun Ao i Mei-chun Yang. "A Classification of Fourth-Order Dissipative Differential Operators". Journal of Function Spaces 2020 (21.01.2020): 1–9. http://dx.doi.org/10.1155/2020/7510313.

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This paper is devoted to the classification of the fourth-order dissipative differential operators by the boundary conditions. Subject to certain conditions, we determine some nonself-adjoint boundary conditions that generate the fourth-order differential operators to be dissipative. And under certain conditions, we prove that these dissipative operators have no real eigenvalues.
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Bratteli, Ola, i Palle E. T. Jørgensen. "Conservative derivations and dissipative Laplacians". Journal of Functional Analysis 82, nr 2 (luty 1989): 404–11. http://dx.doi.org/10.1016/0022-1236(89)90077-3.

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Mustafayev, Heybetkulu. "Dissipative operators on Banach spaces". Journal of Functional Analysis 248, nr 2 (lipiec 2007): 428–47. http://dx.doi.org/10.1016/j.jfa.2007.02.004.

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Sun, Jinyi, i Lingjuan Zou. "Global Well-Posedness of the Dissipative Quasi-Geostrophic Equation with Dispersive Forcing". Axioms 11, nr 12 (12.12.2022): 720. http://dx.doi.org/10.3390/axioms11120720.

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The dissipative quasi-geostrophic equation with dispersive forcing is considered. By striking new balances between the dispersive effects of the dispersive forcing and the smoothing effects of the viscous dissipation, we obtain the global well-posedness for Cauchy problem of the dissipative quasi-geostrophic equation with dispersive forcing for arbitrary initial data, provided that the dispersive parameter is large enough.
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QU, Tonghuan, Shijie ZHU, Zhenqiang SONG i Kazuhiro OHYAMA. "Analysis on the Electrical Dissipation of a Dissipative Dielectric Elastomer Generator". Proceedings of Mechanical Engineering Congress, Japan 2021 (2021): J031–21. http://dx.doi.org/10.1299/jsmemecj.2021.j031-21.

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Allahverdiev, B. P. "Dissipative Schrödinger Operators with Matrix Potentials". Potential Analysis 20, nr 4 (czerwiec 2004): 303–15. http://dx.doi.org/10.1023/b:pota.0000009815.97987.26.

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Rozprawy doktorskie na temat "Dissipative analysis"

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Gibson, Jonathan Brian. "Application and analysis of dissipative particle dynamics". Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367133.

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Eichenauer, Florian. "Analysis for dissipative Maxwell-Bloch type models". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2016. http://dx.doi.org/10.18452/17661.

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Die vorliegende Dissertation befasst sich mit der mathematischen Modellierung semi-klassischer Licht-Materie-Interaktion. Im semiklassischen Bild wird Materie durch eine Dichtematrix "rho" beschrieben. Das Konzept der Dichtematrizen ist quantenmechanischer Natur. Auf der anderen Seite wird Licht durch ein klassisches elektromagnetisches Feld "(E,H)" beschrieben. Wir stellen einen mathematischen Rahmen vor, in dem wir systematisch dissipative Effekte in die Liouville-von-Neumann-Gleichung inkludieren. Bei unserem Ansatz sticht ins Auge, dass Lösungen der resultierenden Gleichung eine intrinsische Liapunov-Funktion besitzen. Anschließend koppeln wir die resultierende Gleichung mit den Maxwell-Gleichungen und erhalten ein neues selbstkonsistentes, dissipatives Modell vom Maxwell-Bloch-Typ. Der Fokus dieser Arbeit liegt auf der intensiven mathematischen Studie des dissipativen Modells vom Maxwell-Bloch-Typ. Da das Modell Lipschitz-Stetigkeit vermissen lassen, kreieren wir eine regularisierte Version des Modells, das Lipschitz-stetig ist. Wir beschränken unsere Analyse im Wesentlichen auf die Lipschitz-stetige Regularisierung. Für regularisierte Versionen des dissipativen Modells zeigen wir die Existenz von Lösungen des zugehörigen Anfangswertproblems. Der Kern des Existenzbeweises besteht aus einem Resultat von ``compensated compactness'''', das von P. Gérard bewiesen wurde, sowie aus einem Lemma vom Rellich-Typ. In Teilen folgt dieser Beweis dem Vorgehen einer älteren Arbeit von J.-L. Joly, G. Métivier und J. Rauch.
This thesis deals with the mathematical modeling of semi-classical matter-light interaction. In the semi-classical picture, matter is described by a density matrix "rho", a quantum mechanical concept. Light on the other hand, is described by a classical electromagnetic field "(E,H)". We give a short overview of the physical background, introduce the usual coupling mechanism and derive the classical Maxwell-Bloch equations which have intensively been studied in the literature. Moreover, We introduce a mathematical framework in which we state a systematic approach to include dissipative effects in the Liouville-von-Neumann equation. The striking advantage of our approach is the intrinsic existence of a Liapunov function for solutions to the resulting evolution equation. Next, we couple the resulting equation to the Maxwell equations and arrive at a new self-consistent dissipative Maxwell-Bloch type model for semi-classical matter-light interaction. The main focus of this work lies on the intensive mathematical study of the dissipative Maxwell-Bloch type model. Since our model lacks Lipschitz continuity, we create a regularized version of the model that is Lipschitz continuous. We mostly restrict our analysis to the Lipschitz continuous regularization. For regularized versions of the dissipative Maxwell-Bloch type model, we prove existence of solutions to the corresponding Cauchy problem. The core of the proof is based on results from compensated compactness due to P. Gérard and a Rellich type lemma. In parts, this proof closely follows the lines of an earlier work due to J.-L. Joly, G. Métivier and J. Rauch.
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Gao, Dalong. "Control limitation analysis for dissipative passive haptic interfaces". Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-11112005-114601/.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2006.
Arkin, Ronald, Committee Member ; DeWeerth, Steve, Committee Member ; Vito, Raymond, Committee Member ; Ebert-Uphoff, Imme, Committee Member ; Book, Wayne, Committee Chair. Includes bibliographical references.
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Feng, Zhiguang, i 冯志光. "Dissipative control and filtering of singular systems". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50899612.

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This thesis is concerned with the dissipative control and filtering problems of singular systems. Four classes of singular systems are considered: delay-free singular systems, singular systems with constant time-delay, uncertain singular systems with time-varying delay and sensor failures, and singular Markovian jump systems with actuator failures. For delay-free singular systems, the system augmentation approach is employed to study the dissipative control and filtering problems. First, the approach is used to solve the dissipative control problem by static output-feedback for standard state-space systems which are the special cases of singular systems. For a continuous-time standard state-space system, the closed-loop system is represented in an augmented system form. Based on the augmented system, a necessary and sufficient dissipativity condition is proposed, which decouples the Lyapunov matrix and controller matrix. To further separate the Lyapunov matrix and the system matrices, an equivalent condition is obtained by introducing some slack matrices. Then, a necessary and sufficient condition for the existence of a static output-feedback controller is proposed, and an iterative algorithm is given to solve the condition. For discrete-time singular systems, by giving an equivalent representation of the solution set, a necessary and sufficient dissipativity condition is proposed in terms of strict linear matrix inequality (LMI) which can be easily solved by standard commercial software. Then a state-feedback controller design method is given based on the augmentation system approach. The method is extended to the static output-feedback control problem and the reduced-order dissipative filtering problem. For continuous-time singular time-delay systems, the problem of state-feedback dissipative control is considered. An improved delay-dependent dissipativity condition in terms of LMIs is established by employing the delay-partitioning technique, which guarantees a singular system to be admissible and dissipative. Based on this, a delay-dependent sufficient condition for the existence of a state-feedback controller is proposed to guarantee the admissibility and dissipativity of the closed-loop system. In addition to delay-dependence, the obtained results are also dependent on the level of dissipativity. Moreover, the results obtained unify existing results on H∞ performance analysis and passivity analysis for singular systems. For discrete-time singular systems with polytopic uncertainties, time-varying delay and sensor failures, the problem of robust reliable dissipative filtering is considered. The filter is designed by the reciprocally convex approach such that the filtering error singular system is admissible and strictly (Q, S, R)-dissipative. For singular systems with time-varying delay and sensor failures, a sufficient condition of reliable dissipative analysis is obtained in terms of LMIs. Then the result is extended to the uncertain case by introducing some variables to decouple the Lyapunov matrices and the filtering error system matrices. Moreover, a desired filter for uncertain singular systems with time-varying delay and sensor failures is obtained by solving a set of LMIs. For continuous-time singular Markovian jump systems with actuator failures, the problem of reliable dissipative control is addressed. Attention is focused on the state-feedback controller design method such that the closed-loop system is admissible and strictly (Q, S, R)-dissipative. A sufficient condition is obtained in terms of strict LMIs. Moreover, the results obtained unify existing results on H∞control and passive control on singular Markovian jump systems.
published_or_final_version
Mechanical Engineering
Doctoral
Doctor of Philosophy
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Dincer, Ayse. "Numerical And Experimental Analysis Of Dissipative Silencer Coupled With Quarter Wave Tube". Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615527/index.pdf.

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The study deals with investigation of acoustical characteristics of a hybrid silencer made up of a dissipative silencer and a quarter wave tube resonator. The theoretical and experimental analyses are performed to define acoustic characteristics of a simple expansion chamber and reactive perforated silencer, while the numerical and experimental solutions are presented for dissipative perforated silencer. Furthermore, the experiments and numerical solutions are extended to the hybrid silencer to find the effect of quarter wave tube resonator on the silencer performance. The experimental results of dissipative silencer are verified with theoretical solutions. The empirical expressions for acoustic impedance of perforation and filling material are presented in this study for use in a three-dimensional boundary element method (BEM). Besides, an experimental setup is also established to find the characteristic impedance and wavenumber of absorbing material to import BEM solution when the empirical expression cannot be used. The results found with BEM are compared by analytical and experimental results favorably.
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Ciornei, Mihaela-Cristina. "Rôle de l'inertie dans la dynamique dissipative du macrospin". Phd thesis, Ecole Polytechnique X, 2010. http://tel.archives-ouvertes.fr/tel-00460905.

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Cette thèse a le but d'introduire le concept de l'inertie dans la dynamique dissipative du macrospin. En suivant le travail de T. L. Gilbert dans cette direction, une masse est associée au macrospin, qui n'est pas liée au mouvement d'une masse réelle, mais à l'inertie du macrospin. Comme conséquence, une forme généralisée de l'équation dynamique du Gilbert tenant compte de l'inertie du macrospin est obtenue. A l'échelle d'une nanostructure ferromagnétique, les fluctuations sont relevantes. Le macrospin suit un mouvement Brownien dans l'espace de configuration correspondant (une sphère de rayon Ms). Pour faire une description de la dynamique du macrospin, une simple, rigoureuse et nouvelle théorie, celle de la thermodynamique mésoscopique hors équilibre est utilisée comme alternative au formalisme des processus stochastiques utilisé par W. F. Brown Jr. L'état de l'aimantation est décrit par un nombre de degrés de liberté qui influencent la dynamique du système : l'orientation m de l'aimantation décrite par les angles (θ, φ) et la vitesse u = dm/dt , ou le moment cinétique L. Une fonction de distribution f est introduite liée à la probabilité de trouver l'aimantation dans un état particulier (m, u) ou (m,L). La combination de la définition statistique de l'entropie comme une fonction de la probabilité, avec la méthodologie systèmatique de la thermodynamique hors equilibre résulte dans une théorie puissante décrivant pas seulement la dynamique moyennée du macrospin, mais aussi les fluctuations autour de la moyenne. Donc, une équation généralisée dynamique de Gilbert et une équation généralisée stochastique de Brown sont obtenues avec la théorie MNET. Un temps de relaxation est défini dépendent de l'inertie et du coefficient de dissipation du macrospin. Le comportement de l'aimantation impose deux régimes : un régime inertiel ou des temps courts t << τ , et le régime de diffusion ou des temps longs t >> τ . Un nouveau phénomène, la nutation, est prédite dans le régime inertiel, tandis que l'équation dynamique de Gilbert et l'équation stochastique de Brown sont obtenues aux temps longs. De plus, la question sur l'application de MNET dans le domaine de la spintronique est posée dans le contexte du spin transfer. Un modèle à deux fluides en rotation est présenté pour les spins s des électrons de conduction et les spins d des électrons constituant l'aimantation. Le modèle est intéressant proche de la interface normal-ferromagnet où se trouve accumulation de spin.
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Macias, Diaz Jorge. "A Numerical Method for Computing Radially Symmetric Solutions of a Dissipative Nonlinear Modified Klein-Gordon Equation". ScholarWorks@UNO, 2004. http://scholarworks.uno.edu/td/167.

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In this paper we develop a finite-difference scheme to approximate radially symmetric solutions of a dissipative nonlinear modified Klein-Gordon equation in an open sphere around the origin, with constant internal and external damping coefficients and nonlinear term of the form G' (w) = w ^p, with p an odd number greater than 1. We prove that our scheme is consistent of quadratic order, and provide a necessary condition for it to be stable order n. Part of our study will be devoted to study the effects of internal and external damping.
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Eichenauer, Florian [Verfasser], Alexander [Gutachter] Mielke, Matthias [Gutachter] Eller i Serhiy [Gutachter] Yanchuk. "Analysis for dissipative Maxwell-Bloch type models / Florian Eichenauer ; Gutachter: Alexander Mielke, Matthias Eller, Serhiy Yanchuk". Berlin : Mathematisch-Naturwissenschaftliche Fakultät, 2016. http://d-nb.info/1122167784/34.

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Tassotti, Luca. "Seismic analysis and design of innovative steel and concrete hybrid coupled wall systems". Doctoral thesis, Università Politecnica delle Marche, 2015. http://hdl.handle.net/11566/242920.

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L’applicazione del concetto di fusibile strutturale nei sistemi sismo-resistenti ha portato allo sviluppo di diverse soluzioni strutturali, tra queste sono compresi i promettenti sistemi ibridi acciaio calcestruzzo. Questi sistemi sono ottenuti tramite una combinazione in serie di elementi in acciaio e in calcestruzzo armato con l’obiettivo di sfruttare al loro meglio le potenzialità di ciascun materiale. In questo lavoro viene indagato il comportamento sismico del sistema innovativo ibrido a parete accoppiata (HCSW), sviluppato nel progetto di ricerca europeo INNO-HYCO (INNOvative HYbrid and COmposite steel-concrete structural solutions for building in seismic area). La soluzione sismo-resistente è composta da una parete in calcestruzzo armato accoppiata a colonne laterali di acciaio tramite link sostituibili con l’obiettivo di sfruttare sia la rigidezza della parete, necessaria a limitare il danneggiamento della costruzione sotto l’azione di terremoti di bassa intensità, che la duttilità dei link di acciaio, necessaria a dissipare l’energia dei sismi di medio-alta intensità. Il comportamento sismico del sistema viene valutato tramite analisi statiche non lineari (pushover) e analisi dinamiche non lineari incrementali (IDA). Per questi scopi, inizialmente è stato progettato un insieme di casi studio realistici, poi è stato sviluppato un modello agli elementi finiti a fibre, validato successivamente tramite confronti con risultati sperimentali comprendendo quantità di risposta locali e globali. Infine, viene mostrata una selezione dei risultati ottenuti, includendo parametri di risposta locale e globale, per mettere in luce le potenzialità dei sistemi innovativi proposti e la concreta possibilità di sviluppare un comportamento duttile nel quale le deformazioni plastiche nei link sono attese prima dello snervamento della parete. Inoltre, i risultati finali permettono di fornire un supporto per l’identificazione delle soluzioni ottimali che potrebbero risultare competitive rispetto a sistemi esistenti.
The concept of structural fuse applied to earthquake resistant systems has led to the development of several seismic-resistant structural solutions, including interesting steel and concrete hybrid systems. These systems are obtained through a combination in series of steel elements and reinforced concrete elements with the aim of exploiting at their best the potentialities of each material. In this work the seismic behaviour of an innovative hybrid coupled shear wall (HCSW) system, developed in the European research project INNO-HYCO (INNOvative HYbrid and COmposite steel-concrete structural solutions for building in seismic area), is investigated. The earthquake resistant solution is composed by a reinforced concrete wall coupled to steel side columns by means of easily replaceable steel links with the objective to exploit both the stiffness of reinforced concrete wall, necessary to limit building damage under low-intensity earthquakes, and the ductility of steel links, necessary to dissipate energy under medium- and high-intensity earthquakes. The seismic behaviour of the system is assessed through nonlinear static (pushover) analysis and multi-record nonlinear incremental dynamic analysis (IDA). For this purpose, firstly a set of realistic case studies is designed, then a finite element model is developed into the platform Opensees and validated through comparisons against experimental tests including local and global responses quantities. A selection of results including global and local response quantities is shown in order to highlight the potentialities of the proposed innovative HCSW systems and the actual possibility to develop a ductile behaviour where plastic deformation are attained in the steel links before yielding in the reinforced concrete wall. The final results permit to provide a support for the identification of optimal solutions that could be competitive against existing seismic resistant structural systems.
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Moraux, Didier. "Amélioration du comportement dynamique général d'une structure mécanique par l'extension du concept de réanalyse à la réanalyse modale dissipative et à la réanalyse de la réponse forcée". Valenciennes, 1993. https://ged.uphf.fr/nuxeo/site/esupversions/689e15e0-4c62-4547-8b38-b7a6dbb9be3b.

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Il existe encore actuellement des lacunes importantes dans le domaine de la réanalyse modale et, plus encore, dans celui de la réanalyse en vibrations forcées. On se propose ici d'étendre davantage le champ d'application du concept de réanalyse. En matière de réanalyse modale, notre souci a été de reprendre les développements de méthodes déjà performantes dans le domaine conservatif pour les étendre au domaine dissipatif. Pour cela, nous avons amélioré les formulations de la méthode aux réceptances et de la méthode aux partitions, aboutissant à des algorithmes numériques efficaces. En ce qui concerne la méthode aux réceptances, la considération du cas particulier d'un apport d'amortissement a partir d'un système initial conservatif, a permis d'obtenir un algorithme simplifie performant. Les bons résultats numériques et les faibles temps de calcul illustrent les qualités des méthodes étudiées. En matière de réanalyse de la réponse forcée, nous nous sommes donne pour tâche de développer une méthode issue de la réanalyse statique et de pousser plus avant les investigations d'une approche initialement proposée par Palazzolo. La formulation est également étendue aux sollicitations quelconques périodiques par l'emploi d'une décomposition en séries de Fourier. Les bons résultats obtenus démontrent les bonnes dispositions des méthodes retenues
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Książki na temat "Dissipative analysis"

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Brogliato, Bernard, Bernhard Maschke, Rogelio Lozano i Olav Egeland. Dissipative Systems Analysis and Control. London: Springer London, 2007. http://dx.doi.org/10.1007/978-1-84628-517-2.

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Lozano, Rogelio, Bernard Brogliato, Olav Egeland i Bernhard Maschke. Dissipative Systems Analysis and Control. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-3668-2.

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Brogliato, Bernard, Rogelio Lozano, Bernhard Maschke i Olav Egeland. Dissipative Systems Analysis and Control. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-19420-8.

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Tarasov, Vasily E. Quantum mechanics of non-Hamiltonian and dissipative systems. Amsterdam: Elsevier, 2008.

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Japan) RIMS Workshop on "Pattern Formation Problems in Dissipative Systems" and "Mathematical Modeling and Analysis for Nonlinear Phenomena" (2007 Kyoto. Workshops on "pattern formation problems in dissipative systems" and "mathematical modeling and analysis for nonlinear phenomena.". Kyoto, Japan: Research Institute for Mathematical Sciences, Kyoto University, 2007.

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Yeffet, Amir. A non-dissipative staggered fourth-order accurate explicit finite difference scheme for the time-domain Maxwell's equations. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1999.

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Yeffet, Amir. A non-dissipative staggered fourth-order accurate explicit finite difference scheme for the time-domain Maxwell's equations. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1999.

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Yeffet, Amir. A non-dissipative staggered fourth-order accurate explicit finite difference scheme for the time-domain Maxwell's equations. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1999.

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Yeffet, Amir. A non-dissipative staggered fourth-order accurate explicit finite difference scheme for the time-domain Maxwell's equations. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1999.

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Yeffet, Amir. A non-dissipative staggered fourth-order accurate explicit finite difference scheme for the time-domain Maxwell's equations. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1999.

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Części książek na temat "Dissipative analysis"

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Lozano, Rogelio, Bernard Brogliato, Olav Egeland i Bernhard Maschke. "Dissipative Systems". W Dissipative Systems Analysis and Control, 111–66. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-3668-2_4.

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Brogliato, Bernard, Rogelio Lozano, Bernhard Maschke i Olav Egeland. "Dissipative Systems". W Dissipative Systems Analysis and Control, 263–355. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-19420-8_4.

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Brogliato, Bernard, Bernhard Maschke, Rogelio Lozano i Olav Egeland. "Dissipative Systems". W Dissipative Systems Analysis and Control, 177–256. London: Springer London, 2007. http://dx.doi.org/10.1007/978-1-84628-517-2_4.

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Cheng, Daizhan, Xiaoming Hu i Tielong Shen. "Dissipative Systems". W Analysis and Design of Nonlinear Control Systems, 379–401. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-11550-9_13.

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Lozano, Rogelio, Bernard Brogliato, Olav Egeland i Bernhard Maschke. "Dissipative Physical Systems". W Dissipative Systems Analysis and Control, 167–225. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-3668-2_5.

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Brogliato, Bernard, Rogelio Lozano, Bernhard Maschke i Olav Egeland. "Dissipative Physical Systems". W Dissipative Systems Analysis and Control, 429–90. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-19420-8_6.

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Brogliato, Bernard, Bernhard Maschke, Rogelio Lozano i Olav Egeland. "Dissipative Physical Systems". W Dissipative Systems Analysis and Control, 315–71. London: Springer London, 2007. http://dx.doi.org/10.1007/978-1-84628-517-2_6.

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Brogliato, Bernard, Rogelio Lozano, Bernhard Maschke i Olav Egeland. "Stability of Dissipative Systems". W Dissipative Systems Analysis and Control, 357–427. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-19420-8_5.

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Brogliato, Bernard, Bernhard Maschke, Rogelio Lozano i Olav Egeland. "Stability of Dissipative Systems". W Dissipative Systems Analysis and Control, 257–313. London: Springer London, 2007. http://dx.doi.org/10.1007/978-1-84628-517-2_5.

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Lozano, Rogelio, Bernard Brogliato, Olav Egeland i Bernhard Maschke. "Introduction". W Dissipative Systems Analysis and Control, 1–7. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-3668-2_1.

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Streszczenia konferencji na temat "Dissipative analysis"

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Modin, K., C. Führer, G. Soöderlind, Theodore E. Simos, George Psihoyios i Ch Tsitouras. "Geometric Integration of Weakly Dissipative Systems". W NUMERICAL ANALYSIS AND APPLIED MATHEMATICS: International Conference on Numerical Analysis and Applied Mathematics 2009: Volume 1 and Volume 2. AIP, 2009. http://dx.doi.org/10.1063/1.3241619.

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Nastri, Elide, Rosario Montuori, Vincenzo Piluso i Alessandro Pisapia. "Design procedure for dissipative replaceable link frames". W INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS: ICNAAM2022. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0210483.

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Kirillov, Oleg N., i Ferdinand Verhulst. "Sensitivity Analysis of Dissipative Reversible and Hamiltonian Systems: A Survey". W ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-10449.

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The paradox of destabilization of a conservative or non-conservative system by small dissipation, or Ziegler’s paradox (1952), has stimulated an ever growing interest in the sensitivity of reversible and Hamiltonian systems with respect to dissipative perturbations. Since the last decade it has been widely accepted that dissipation-induced instabilities are closely related to singularities arising on the stability boundary. What is less known is that the first complete explanation of Ziegler’s paradox by means of the Whitney umbrella singularity dates back to 1956. We revisit this undeservedly forgotten pioneering result by Oene Bottema that outstripped later findings for about half a century. We discuss subsequent developments of the perturbation analysis of dissipation-induced instabilities and applications over this period, involving structural stability of matrices, Krein collision, Hamilton-Hopf bifurcation and related bifurcations.
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Imai, R., J. Takahashi, T. Oyama i Y. Yamanaka. "Semiclassical analysis of driven-dissipative excitonic condensation". W PROCEEDINGS OF THE 14TH ASIA-PACIFIC PHYSICS CONFERENCE. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0037248.

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Ye Li i Yueyuan Fan. "Performance analysis of stress dissipative structure sensor". W 2010 International Conference on Future Information Technology and Management Engineering (FITME). IEEE, 2010. http://dx.doi.org/10.1109/fitme.2010.5655538.

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Golishev, N. V., S. V. Motorin, A. V. Botvinkov i A. U. Lapay. "Analysis of dissipative systems using nonlinear programming". W 2012 IEEE 11th International Conference on Actual Problems of Electronics Instrument Engineering (APEIE). IEEE, 2012. http://dx.doi.org/10.1109/apeie.2012.6629056.

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Ciani, F. S., P. Bonfiglio i Stefano Piva. "Spectral analysis of a dissipative turbulent flow". W 10th International Symposium on Turbulence, Heat and Mass Transfer, THMT-23, Rome, Italy, 11-15 September 2023. Connecticut: Begellhouse, 2023. http://dx.doi.org/10.1615/ichmt.thmt-23.320.

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Ciani, F. S., P. Bonfiglio i Stefano Piva. "Spectral analysis of a dissipative turbulent flow". W 10th International Symposium on Turbulence, Heat and Mass Transfer, THMT-23, Rome, Italy, 11-15 September 2023. Connecticut: Begellhouse, 2023. http://dx.doi.org/10.1615/thmt-23.320.

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PEREIRA, ML, i SNY GERGES. "EXPERIMENTAL AND NUMERICAL ANALYSIS OF DISSIPATIVE SILENCERS". W Inter-Noise 1996. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/19653.

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Miyatake, Yuto, i Takayasu Matsuo. "Energy conservative/dissipative H1-Galerkin semi-discretizations for partial differential equations". W NUMERICAL ANALYSIS AND APPLIED MATHEMATICS ICNAAM 2012: International Conference of Numerical Analysis and Applied Mathematics. AIP, 2012. http://dx.doi.org/10.1063/1.4756385.

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Raporty organizacyjne na temat "Dissipative analysis"

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Brooks, J. N., D. N. Ruzic, D. B. Hayden i R. B. Jr Turkot. Surface erosion issues and analysis for dissipative divertors. Office of Scientific and Technical Information (OSTI), sierpień 1994. http://dx.doi.org/10.2172/10158166.

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LI, Chunyu, Jing WU i Luqi XIE. SEISMIC PERFORMANCE ANALYSIS OF FABRICATED CONCRETE FRAME WITH REPLACEABLE ENERGY DISSIPATION CONNECTORS. The Hong Kong Institute of Steel Construction, grudzień 2018. http://dx.doi.org/10.18057/icass2018.p.106.

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Lokke, Arnkjell, i Anil Chopra. Direct-Finite-Element Method for Nonlinear Earthquake Analysis of Concrete Dams Including Dam–Water–Foundation Rock Interaction. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, marzec 2019. http://dx.doi.org/10.55461/crjy2161.

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Evaluating the seismic performance of concrete dams requires nonlinear dynamic analysis of two- or three-dimensional dam–water–foundation rock systems that include all the factors known to be significant in the earthquake response of dams. Such analyses are greatly complicated by interaction between the structure, the impounded reservoir and the deformable foundation rock that supports it, and the fact that the fluid and foundation domains extend to large distances. Presented in this report is the development of a direct finite-element (FE) method for nonlinear earthquake analysis of two- and three-dimensional dam–water–foundation rock systems. The analysis procedure applies standard viscous-damper absorbing boundaries to model the semi-unbounded fluid and foundation domains, and specifies at these boundaries effective earthquake forces determined from a ground motion defined at a control point on the ground surface. This report is organized in three parts, with a common notation list, references, and appendices at the end of the report. Part I develops the direct FE method for 2D dam–water–foundation rock systems. The underlying analytical framework of treating dam–water–foundation rock interaction as a scattering problem, wherein the dam perturbs an assumed "free-field" state of the system, is presented, and by applying these concepts to a bounded FE model with viscous-damper boundaries to truncate the semi-unbounded domains, the analysis procedure is derived. Step-by-step procedures for computing effective earthquake forces from analysis of two 1D free-field systems are presented, and the procedure is validated by computing frequency response functions and transient response of an idealized dam–water–foundation rock system and comparing against independent benchmark results. This direct FE method is generalized to 3D systems in Part II of this report. While the fundamental concepts of treating interaction as a scattering problem are similar for 2D and 3D systems, the derivation and implementation of the method for 3D systems is much more involved. Effective earthquake forces must now be computed by analyzing a set of 1D and 2D systems derived from the boundaries of the free-field systems, which requires extensive book-keeping and data transfer for large 3D models. To reduce these requirements and facilitate implementation of the direct FE method for 3D systems, convenient simplifications of the procedure are proposed and their effectiveness demonstrated. Part III of the report proposes to use the direct FE method for conducting the large number of nonlinear response history analyses (RHAs) required for performance-based earthquake engineering (PBEE) of concrete dams, and discusses practical modeling considerations for two of the most influential aspects of these analyses: nonlinear mechanisms and energy dissipation (damping). The findings have broad implications for modeling of energy dissipation and calibration of damping values for concrete dam analyses. At the end of Part III, the direct FE method is implemented with a commercial FE program and used to compute the nonlinear response of an actual arch dam. These nonlinear results, although limited in their scope, demonstrate the capabilities and effectiveness of the direct FE method to compute the types of nonlinear engineering response quantities required for PBEE of concrete dams.
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Manzini, Gianmarco, Hashem Mohamed Mourad, Paola Francesca Antonietti, Italo Mazzieri i Marco Verani. The arbitrary-order virtual element method for linear elastodynamics models. Convergence, stability and dispersion-dissipation analysis. Office of Scientific and Technical Information (OSTI), maj 2020. http://dx.doi.org/10.2172/1630838.

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Bryant, Mary, Duncan Bryant, Leigh Provost, Nia Hurst, Maya McHugh, Anna Wargula i Tori Tomiczek. Wave attenuation of coastal mangroves at a near-prototype scale. Engineer Research and Development Center (U.S.), wrzesień 2022. http://dx.doi.org/10.21079/11681/45565.

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A physical model study investigating the dissipation of wave energy by a 1:2.1 scale North American red mangrove forest was performed in a large-scale flume. The objectives were to measure the amount of wave attenuation afforded by mangroves, identify key hydrodynamic parameters influencing wave attenuation, and provide methodologies for application. Seventy-two hydrodynamic conditions, comprising irregular and regular waves, were tested. The analysis related the dissipation to three formulations that can provide estimates of wave attenuation for flood risk management projects considering mangroves: damping coefficient β, drag coefficient C𝐷, and Manning’s roughness coefficient 𝑛. The attenuation of the incident wave height through the 15.12 m long, 1:2.1 scale mangrove forest was exponential in form and varied from 13%–77%. Water depth and incident wave height strongly influenced the amount of wave attenuation. Accounting for differences in water depth using the sub-merged volume fraction resulted in a common fit of the damping coefficient as a function of relative wave height and wave steepness. The drag coefficient demonstrated a stronger relationship with the Keulegan–Carpenter number than the Reynolds number. The linear relationship between relative depth and Manning’s 𝑛 was stronger than that between Manning’s 𝑛 and either relative wave height or wave steepness.
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Sherwood, C. R., W. E. Asher i A. S. Ogston. Estimation of turbulence-dissipation rates and gas-transfer velocities in a surf pool: Analysis of the results from WABEX-93. Office of Scientific and Technical Information (OSTI), lipiec 1995. http://dx.doi.org/10.2172/100414.

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Moum, James N. Nonlinear Internal Waves - A Wave-Tracking Experiment to Assess Nonlinear Internal Wave Generation, Structure, Evolution and Dissipation over the NJ Shelf / Analysis. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 2008. http://dx.doi.org/10.21236/ada534110.

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Gambill, Daniel, Matthew Stoklosa, Sean Matus, Heidi Howard i Garrett Feezor. White Sands Missile Range Thurgood Canyon watershed : analysis of Range Road 7 for development of best management practices and recommendations. Engineer Research and Development Center (U.S.), wrzesień 2022. http://dx.doi.org/10.21079/11681/45622.

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Thurgood Canyon, located on White Sands Missile Range (WSMR), contains an alluvial fan that is bisected by a primary installation road and is in the proximity of sensitive fish habitats. This project was initiated to determine if and how sensitive fish habitats at the base of the fan are impacted by the existing drainage infrastructure and to assess the condition and sustainability of the existing transportation infrastructure. Findings show that the current drainage infrastructure maintains flow energy and sediment carrying capacity further down the fan than would occur in its absence. However, frequent to moderately rare (small to medium) flood events dissipate over 2 km from sensitive habitat, and overland flow and sediment do not reach the base of the fan. Controlled flow diversion is recommended upstream of the road to mitigate infrastructure or habitat impacts during very rare (very large) flood events. A comprehensive operation and management approach is presented to achieve sustainable transportation infrastructure and reduce the likelihood of impacts to the sensitive habitat.
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Wu, Yingjie, Selim Gunay i Khalid Mosalam. Hybrid Simulations for the Seismic Evaluation of Resilient Highway Bridge Systems. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, listopad 2020. http://dx.doi.org/10.55461/ytgv8834.

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Bridges often serve as key links in local and national transportation networks. Bridge closures can result in severe costs, not only in the form of repair or replacement, but also in the form of economic losses related to medium- and long-term interruption of businesses and disruption to surrounding communities. In addition, continuous functionality of bridges is very important after any seismic event for emergency response and recovery purposes. Considering the importance of these structures, the associated structural design philosophy is shifting from collapse prevention to maintaining functionality in the aftermath of moderate to strong earthquakes, referred to as “resiliency” in earthquake engineering research. Moreover, the associated construction philosophy is being modernized with the utilization of accelerated bridge construction (ABC) techniques, which strive to reduce the impact of construction on traffic, society, economy and on-site safety. This report presents two bridge systems that target the aforementioned issues. A study that combined numerical and experimental research was undertaken to characterize the seismic performance of these bridge systems. The first part of the study focuses on the structural system-level response of highway bridges that incorporate a class of innovative connecting devices called the “V-connector,”, which can be used to connect two components in a structural system, e.g., the column and the bridge deck, or the column and its foundation. This device, designed by ACII, Inc., results in an isolation surface at the connection plane via a connector rod placed in a V-shaped tube that is embedded into the concrete. Energy dissipation is provided by friction between a special washer located around the V-shaped tube and a top plate. Because of the period elongation due to the isolation layer and the limited amount of force transferred by the relatively flexible connector rod, bridge columns are protected from experiencing damage, thus leading to improved seismic behavior. The V-connector system also facilitates the ABC by allowing on-site assembly of prefabricated structural parts including those of the V-connector. A single-column, two-span highway bridge located in Northern California was used for the proof-of-concept of the proposed V-connector protective system. The V-connector was designed to result in an elastic bridge response based on nonlinear dynamic analyses of the bridge model with the V-connector. Accordingly, a one-third scale V-connector was fabricated based on a set of selected design parameters. A quasi-static cyclic test was first conducted to characterize the force-displacement relationship of the V-connector, followed by a hybrid simulation (HS) test in the longitudinal direction of the bridge to verify the intended linear elastic response of the bridge system. In the HS test, all bridge components were analytically modeled except for the V-connector, which was simulated as the experimental substructure in a specially designed and constructed test setup. Linear elastic bridge response was confirmed according to the HS results. The response of the bridge with the V-connector was compared against that of the as-built bridge without the V-connector, which experienced significant column damage. These results justified the effectiveness of this innovative device. The second part of the study presents the HS test conducted on a one-third scale two-column bridge bent with self-centering columns (broadly defined as “resilient columns” in this study) to reduce (or ultimately eliminate) any residual drifts. The comparison of the HS test with a previously conducted shaking table test on an identical bridge bent is one of the highlights of this study. The concept of resiliency was incorporated in the design of the bridge bent columns characterized by a well-balanced combination of self-centering, rocking, and energy-dissipating mechanisms. This combination is expected to lead to minimum damage and low levels of residual drifts. The ABC is achieved by utilizing precast columns and end members (cap beam and foundation) through an innovative socket connection. In order to conduct the HS test, a new hybrid simulation system (HSS) was developed, utilizing commonly available software and hardware components in most structural laboratories including: a computational platform using Matlab/Simulink [MathWorks 2015], an interface hardware/software platform dSPACE [2017], and MTS controllers and data acquisition (DAQ) system for the utilized actuators and sensors. Proper operation of the HSS was verified using a trial run without the test specimen before the actual HS test. In the conducted HS test, the two-column bridge bent was simulated as the experimental substructure while modeling the horizontal and vertical inertia masses and corresponding mass proportional damping in the computer. The same ground motions from the shaking table test, consisting of one horizontal component and the vertical component, were applied as input excitations to the equations of motion in the HS. Good matching was obtained between the shaking table and the HS test results, demonstrating the appropriateness of the defined governing equations of motion and the employed damping model, in addition to the reliability of the developed HSS with minimum simulation errors. The small residual drifts and the minimum level of structural damage at large peak drift levels demonstrated the superior seismic response of the innovative design of the bridge bent with self-centering columns. The reliability of the developed HS approach motivated performing a follow-up HS study focusing on the transverse direction of the bridge, where the entire two-span bridge deck and its abutments represented the computational substructure, while the two-column bridge bent was the physical substructure. This investigation was effective in shedding light on the system-level performance of the entire bridge system that incorporated innovative bridge bent design beyond what can be achieved via shaking table tests, which are usually limited by large-scale bridge system testing capacities.
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Gunay, Selim, Fan Hu, Khalid Mosalam, Arpit Nema, Jose Restrepo, Adam Zsarnoczay i Jack Baker. Blind Prediction of Shaking Table Tests of a New Bridge Bent Design. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, listopad 2020. http://dx.doi.org/10.55461/svks9397.

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Considering the importance of the transportation network and bridge structures, the associated seismic design philosophy is shifting from the basic collapse prevention objective to maintaining functionality on the community scale in the aftermath of moderate to strong earthquakes (i.e., resiliency). In addition to performance, the associated construction philosophy is also being modernized, with the utilization of accelerated bridge construction (ABC) techniques to reduce impacts of construction work on traffic, society, economy, and on-site safety during construction. Recent years have seen several developments towards the design of low-damage bridges and ABC. According to the results of conducted tests, these systems have significant potential to achieve the intended community resiliency objectives. Taking advantage of such potential in the standard design and analysis processes requires proper modeling that adequately characterizes the behavior and response of these bridge systems. To evaluate the current practices and abilities of the structural engineering community to model this type of resiliency-oriented bridges, the Pacific Earthquake Engineering Research Center (PEER) organized a blind prediction contest of a two-column bridge bent consisting of columns with enhanced response characteristics achieved by a well-balanced contribution of self-centering, rocking, and energy dissipation. The parameters of this blind prediction competition are described in this report, and the predictions submitted by different teams are analyzed. In general, forces are predicted better than displacements. The post-tension bar forces and residual displacements are predicted with the best and least accuracy, respectively. Some of the predicted quantities are observed to have coefficient of variation (COV) values larger than 50%; however, in general, the scatter in the predictions amongst different teams is not significantly large. Applied ground motions (GM) in shaking table tests consisted of a series of naturally recorded earthquake acceleration signals, where GM1 is found to be the largest contributor to the displacement error for most of the teams, and GM7 is the largest contributor to the force (hence, the acceleration) error. The large contribution of GM1 to the displacement error is due to the elastic response in GM1 and the errors stemming from the incorrect estimation of the period and damping ratio. The contribution of GM7 to the force error is due to the errors in the estimation of the base-shear capacity. Several teams were able to predict forces and accelerations with only moderate bias. Displacements, however, were systematically underestimated by almost every team. This suggests that there is a general problem either in the assumptions made or the models used to simulate the response of this type of bridge bent with enhanced response characteristics. Predictions of the best-performing teams were consistently and substantially better than average in all response quantities. The engineering community would benefit from learning details of the approach of the best teams and the factors that caused the models of other teams to fail to produce similarly good results. Blind prediction contests provide: (1) very useful information regarding areas where current numerical models might be improved; and (2) quantitative data regarding the uncertainty of analytical models for use in performance-based earthquake engineering evaluations. Such blind prediction contests should be encouraged for other experimental research activities and are planned to be conducted annually by PEER.
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