Thematische Bibliographien / Dynamic rigidity

Inhaltsverzeichnis

  1. Zeitschriftenartikel
  2. Dissertationen
  3. Bücher
  4. Buchteile
  5. Konferenzberichte
  6. Berichte der Organisationen

Auswahl der wissenschaftlichen Literatur zum Thema „Dynamic rigidity“

Autor: Grafiati
Veröffentlicht am 28. Juni 2021
Zuletzt aktualisiert am 1. Februar 2022

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Zeitschriftenartikel zum Thema "Dynamic rigidity"

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Song, Lu, und J. Michael Schurr. „Dynamic bending rigidity of DNA“. Biopolymers 30, Nr. 3-4 (1990): 229–37. http://dx.doi.org/10.1002/bip.360300302.

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Hou, Ya Li, und Wei Ping Mao. „Analysis of Static and Dynamic Stiffness for Coupled Double-Rotor Spindle System of High Speed Grinder“. Key Engineering Materials 522 (August 2012): 278–82. http://dx.doi.org/10.4028/www.scientific.net/kem.522.278.

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This study was focused on the theoretical modeling and numerical investigation about the dynamic and static stiffness of coupled double-rotor spindle system of high speed grinder. The moment balance and the transition matrix, the state vector, field matrix of spindle system of high speed grinder were analyzed and deduced. The theoretical models about dynamic and static stiffness were established using the transfer matrix method. The numerical results showed that increased rigidity of front bearing significantly increased static and dynamic rigidity of spindle end and the rigidity of front bearing increased, dynamic rigidity increased more significantly than static rigidity. Furthermore, it can be conclued that increased overhang length reduced dynamic and static rigidity of spindle end at an increasingly slower rate and the span of bearing increased, static and dynamic rigidities of spindle end were reduced
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Ye, L., D. A. Weitz, Ping Sheng, S. Bhattacharya, J. S. Huang und M. J. Higgins. „Dynamic rigidity percolation in inverted micelles“. Physical Review Letters 63, Nr. 3 (17.07.1989): 263–66. http://dx.doi.org/10.1103/physrevlett.63.263.

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Weber, Barbara, Shazia Sadiq und Manfred Reichert. „Beyond rigidity – dynamic process lifecycle support“. Computer Science - Research and Development 23, Nr. 2 (22.04.2009): 47–65. http://dx.doi.org/10.1007/s00450-009-0069-5.

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Liu, Shi Hao, Wen Hua Ye, Wei Fang Chen und Ting Zhang. „Simulation and Experiment Study for Spindle of Numerical Control Machine Tool“. Applied Mechanics and Materials 16-19 (Oktober 2009): 1289–93. http://dx.doi.org/10.4028/www.scientific.net/amm.16-19.1289.

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Processing precision of numerical control machine tool is decided by static rigidity and dynamic rigidity of spindle to a great extent. 3- D model of numerical control machine tool was established by using parametric modeling and virtual assembly function of Solidworks. Simultaneously, simulation and Experiment study of the spindle static rigidity was carried out, and practicability of the simulation analysis method was proved. The result indicates that the biggest deformation appears in the front of spindle. The static rigidity of spindle can been enhanced greatly by enhancing three carriage-feed system’s static rigidity of machine tool. The simulation for the dynamic rigidity of spindle indicates that the dynamic rigidity of spindle is uniformly distributed and resonance can be avoided effectively by the spindle when working.
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Tsuruta, K., und K. Kojima. „Dynamic Design Procedure for HVAC Ducts“. Journal of Pressure Vessel Technology 110, Nr. 4 (01.11.1988): 413–21. http://dx.doi.org/10.1115/1.3265624.

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Design layout of ducts and supports systems which make up the heating, ventilating and air-conditioning systems (HVAC) is based upon the Japanese Industrial standard (JIS)[1] for hanger support systems conforming to SMACNA[2] standards of high-rigidity design, where emphasis is placed on buildings containing duct systems. However, since high-rigidity systems involve raising the rigidity of the total system, the weight and number of support structures have to be increased, thus posing economic problems. On the other hand, hanger systems are problematic due to their structural weakness. Therefore, we have tried to apply low-rigidity ducts and a support system which rely heavily on the strength of the ducts themselves. To accomplish this we tried to lengthen the duct support span, to lighten the support structures, and to establish a reasonable design method for the duct system. Further, the effectiveness of the present design margin can be confirmed by a duct system test using a shaker table. Our study mainly consisted of experiments: performing duct element tests to study rigidity and strength, using the shaker table to estimate dynamic characteristics and response characteristics of a duct system model, and studying the calculations of the duct beam model.
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Shan, Li Jun, Wei Dong He und Tian Min Guan. „Analysis of Nonlinear Characteristics of Double-Crank Ring-Plate-Typed Pin-Cycloid Gear Planetary Drive“. Advanced Materials Research 44-46 (Juni 2008): 711–16. http://dx.doi.org/10.4028/www.scientific.net/amr.44-46.711.

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Double-crank ring-plate-typed pin-cycloid gear planetary drive conquers shortcomings of a traditional pin-cycloid gear planetary drive, whose load-capacity is restricted by rotation-arm bearing dimension. The load-capacity of this kind of new drive is improved greatly and the efficiency of whole machine is 94%. In order to know dynamics reliability of this drive , nonlinear characteristics of double-crank ring-plate-typed pin-cycloid gear planetary drive are analyzed from two sides of transmission error and dynamic meshing process in this paper. A sensitive analytic mathematic model of rod dimension error is set up by kinematics theory. Based on ring-plate-type cycloid drive dynamic meshing characteristics, a rigidity-flexibility combined model of pin-cycloid planetary drive is set up by ANSYS/LS-DYNA module. Meshing process between pin-cycloid gear is simulated by FEM. Instantaneous stress, distortion and dynamic meshing rigidity are computed. Analytical results show that nonlinear meshing rigidity and transmission errors are two main dynamic exciters which cause prototype to vibrate. So, rod dimension error should be reduced in order to increase meshing accuracy, and meshing rigidity of new prototype should be increased in order to reduce vibration. Nonlinear characteristics of the drive can offer some theoretical bases for design of new prototype.
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Bao, Limin, Masayuki Takatera und Akira Shinohara. „Dynamic and Static Flexural Rigidity of Fabric.“ Sen'i Gakkaishi 49, Nr. 12 (1993): 642–47. http://dx.doi.org/10.2115/fiber.49.12_642.

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YATSUN, E. I., О. S. ZUBKOVA, A. V. GORDEYKOV und D. A. ZUBKOV. „INCREASING THE DYNAMIC RIGIDITY OF BORING BARS“. Fundamental and Applied Problems of Engineering and Technology 3 (2020): 45–49. http://dx.doi.org/10.33979/2073-7408-2020-341-3-45-49.

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The article presents the design of an anti–vibration holder, the use of which in the processing of materials by cutting will reduce the level of self–generated vibrations that occur in tool systems. The advantages of the holder are the simplicity of construction and installation of the damping element; the ability to install various types of cutting heads on the holder. As an example, the possibility of using a holder when boring a hole in a thin–walled part is considered. A fragment of the part drawing and the boring scheme is shown. The influence of processing conditions on the tool deviation from the processed surface is studied. Graphs of the dependencies of the deflection of the forming point on the radial component of the cutting force, the departure of the holder, the diameter of the holder, and the elastic modulus of the holder material are constructed. Conclusions are made about the applicability of such holders.
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Lu, Zhi Gang, Guo Jian Li und Wen Wu Jiang. „Analysis of Dynamic Performance Testing of Bridge Based on Finite Element and Dynamic Load Test“. Applied Mechanics and Materials 178-181 (Mai 2012): 2323–28. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.2323.

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Using the Jianninxia Bridge as the experiment object, we set dynamic loading test on it, and did theoretical analysis on its natural vibration characteristics by using large-scale general finite-element software. After the comparative analysis between the collected datas and the theoretical analysis datas, we find that the measurement of the natural vibration frequency is greater than the theoretical analysis value; and the measured value of impact coefficient is less than the theoretical value; therefore, it indicates that this bridge’s actual structural rigidity is greater than its theoretical rigidity, but lack of the impact resistance.
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Dissertationen zum Thema "Dynamic rigidity"

1

Zhong, Min. „Dynamic analysis of cables with variable flexural rigidity“. Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/6990.

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Gerhardt, Thomas. „Chromatographic cell separation based on size and rigidity using dynamic microstructures“. Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/26672.

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The separation of cells by phenotype from heterogeneous mixtures, such as whole blood, is important in a wide range of fields in medicine and biology. Cell separation methods can be classified as either chemical or physical. Chemical separation methods are based on affinity capture and flow cytometry to label and select for specific target cell species. These techniques can be limited by the lack of specific chemistry that uniquely select for the target cell types, including the inability to extract viable cells for propagation in culture. When chemical separation methods cannot be applied, it is sometimes possible to discriminate cells based on their physical properties. As material systems, cells have an enormous range in size and rigidity and these differences can be exploited to achieve separation. Recent advances in microfabrication and microfluidic technologies have presented several innovative methods to approach mechanical cell separation. Our research leverages key characteristics of microfluidic technologies to approach cell separation in a manner similar to liquid chromatography. In chromatography, target species are separated from mixtures by imparting different velocities based on interactions with the column. We apply this process to separate cells based on differences in their size and rigidity using a microfluidic channel with dynamic geometry. This channel is formed between a static surface, containing a series of traps, and a flexible membrane. The device is fabricated using standard microfabrication methods, including photolithography and multi-layer soft lithography. As the cell mixture is flowed through the channel, the height of the channel is varied repeatedly causing periodic entrapment of the larger and more rigid cells, which impart a reduced average velocity to these cells compared to smaller and more deformable cells. Using this technique, we demonstrated chromatographic separation of L5178Y mouse lymphoma cells, representing larger and more rigid species, from human red blood cells, representing smaller and less rigid species. The ratio of the velocities of the target versus background cell types depends upon the duty cycle of the oscillation. We demonstrate the accumulation of mouse lymphoma cells in the microfluidic channel while maintaining cell viability. The system is simple, low-cost and label free.
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Fraser, Elsje S. „Computational modelling of concrete footing rotational rigidity“. Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/1967.

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Alhazmi, Mohammed. „Effect of ocular rigidity upon the dynamic characteristics of saccadic, smooth pursuit and disparity vergence eye movements“. Thesis, Glasgow Caledonian University, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.676478.

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Eye movements are important to fixate or track an object of interest in the visual field. Eye movements are coordinated by six extraocular muscles (EOM) [1, 2]. These EOMs are responsible for ensuring that the visual axes of both eyes are parallel to each other [1, 2]. The effect of variation in refractive error upon eye movements has not received the same attention in the literature as the sensory aspect. Axial length varies considerably with refractive error [3-8]. Subjects with myopia have been found to have considerably larger eyes, with a longer axial length and lower ocular rigidity [3-5, 7, 8], compared to subjects who are emmetropic or hyperopic [3, 4, 6, 9]. It has also been shown that subjects with hyperopia have significantly smaller eyes with shorter axial lengths [6] and higher ocular rigidity [9]. Despite these marked differences in the physical characteristics of the eye between subjects, little work has been done to examine whether axial length or ocular rigidity influences eye movement response characteristics. The effect of variations in the structural characteristics of the eye upon the eye movement characteristics were explored in this PhD work by measuring eye movements under a number of experimental saccadic, smooth pursuit and vergence paradigms in 93 young visually normal subjects. This thesis showed that the characteristics of saccadic eye movements varied systematically with ocular rigidity. Subjects with lower ocular rigidity (always myopic) produced saccades with significantly slower peak velocity and a longer time to peak velocity. Conversely, subjects with high ocular rigidity (hyperopic) produced saccades with significantly faster peak velocity and a shorter time to peak velocity compared to both emmetropes (medium ocular rigidity) and myopes. Smooth pursuit responses to sinusoidal stimulus movement also varied significantly with ocular rigidity. Subjects with lower ocular rigidity (myopic) showed significantly lower response gain and larger phase lag. Hyperopes showed significantly more accurate responses with higher response gain and lower phase lag compared to emmetropes and myopes. Disparity vergence responses to a sinusoidal moving 3D stimulus varied systematically with ocular rigidity. The high ocular rigidity hyperopic eyes showed significantly higher response gain and lower phase lag than the other two refractive groups. The low ocular rigidity myopic eyes exhibited significantly lower response gain and longer phase lag than the medium ocular rigidity emmetropic eyes. The viewing time has a significant influence upon response quality as both response gain and phase lag deteriorates significantly over a very short period of time. In conclusion, it has been shown in this thesis and for the first time that the dynamic characteristics of saccadic, smooth pursuit and disparity vergence eye movements vary systematically with the structural characteristics of the globe. The results of this work provide substantial evidence of the influence of ocular rigidity upon the characteristics of eye movements.
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Kusi-Sekyere, Benjamin. „Macroeconomic effects of low-inflation targets and downward nominal wage rigidity in a dynamic stochastic general equilibrium model“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ62646.pdf.

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Lekeš, Petr. „Návrh a optimalizace tělesa vřeteníku pro obráběcí stroj“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444267.

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This diploma thesis deals with the design and optimization of a headstock for machine tool. Thesis was focused to comparison of several types of slide-ways and linear guides of headstock, considering their static and dynamic rigidity. An overview in the field of machine tools, their static and dynamic properties, use materials and design of headstocks, considering types of guideways, types of guideways drives and types of drives of spindle was made. Among the other main goals is included design of several types of guideway of headstock for horizontal machine tool, elaboration of computational models and evaluation of results.
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Sanroman, Cervero Claudia. „The influence of torsional resistance of the deck on the dynamic response of a high-speed railway bridge : Case study: Ulla River Viaduct“. Thesis, KTH, Bro- och stålbyggnad, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210558.

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Understanding how different parameters affect the dynamic response of high-speed railway bridges is crucial to selecting an efficient structural form. Despite existing numerous publications within this field, only few address the importance of torsional deformations. The main objective of this thesis is to investigate the influence of the torsional resistance of the deck on the dynamic response of an existing bridge. Ulla River Viaduct is presented as a case study, allowing to analyse some aspects of its design and what their alteration entails. To this end, 6 different 3D FE models are compared, 5 of which show a modification from the original configuration. In addition, several positions of the train are considered to contrast the effects when the torsional modes are excited. The performed dynamic calculations are based on the implicit direct integration procedure. The analysis of the case study demonstrates the benefit of closing the torsional circuit of the deck. The results also evidence the need of including torsional effects in its dynamic assessment when low values of torsional rigidity are considered. All this is not easy when simplified 2D or 3D beam models are used. As a final remark, the original design of the Ulla River Viaduct is found highly efficient from a dynamical point of view.
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Lefeuvre, Thibault. „Sur la rigidité des variétés riemanniennes“. Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS562/document.

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Une variété riemannienne est dite rigide lorsque la longueur des géodésiques périodiques (cas des variétés fermées) ou des géodésiques diffusées (cas des variétés ouvertes) permet de reconstruire globalement la géométrie de la variété. Cette notion trouve naturellement son origine dans des dispositifs d’imagerie numérique tels que la tomographie par rayons X. Grâce une approche résolument analytique initiée par Guillarmou et fondée sur de l’analyse microlocale (plus particulièrement sur certaines techniques récentes dues à Faure-Sjostrand et Dyatlov-Zworski permettant une étude analytique fine des flots Anosov), nous montrons que le spectre marqué des longueurs, c’est-à-dire la donnée des longueurs des géodésiques périodiques marquées par l’homotopie, d’une variété fermée Anosov ou Anosov à pointes hyperboliques détermine localement la métrique de la variété. Dans le cas d’une variété ouverte avec ensemble capté hyperbolique, nous montrons que la distance marquée au bord, c’est-à-dire la donnée de la longueur des géodésiques diffusées marquées par l’homotopie, détermine localement la métrique. Enfin, dans le cas d’une surface asymptotiquement hyperbolique, nous montrons qu’une notion de distance renormalisée entre paire de points au bord à l’infini permet de reconstruire globalement la géométrie de la surface
A Riemannian manifold is said to be rigid if the length of periodic geodesics (in the case of a closed manifold) or scattered geodesics (in the case of an open manifold) allows to recover the full geometry of the manifold. This notion naturally arises in imaging devices such as X-ray tomography. Thanks to a analytic framework introduced by Guillarmou and based on microlocal analysis (and more precisely on the analytic study of hyperbolic flows of Faure-Sjostrand and Dyatlov-Zworski), we show that the marked length spectrum, that is the lengths of the periodic geodesics marked by homotopy, of a closed Anosov manifold or of an Anosov manifold with hyperbolic cusps locally determines its metric. In the case of an open manifold with hyperbolic trapped set, we show that the length of the scattered geodesics marked by homotopy locally determines the metric. Eventually, in the case of an asymptotically hyperbolic surface, we show that a suitable notion of renormalized distance between pair of points on the boundary at infinity allows to globally reconstruct the geometry of the surface
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Yao, Fang. „Hazard functions and macroeconomic dynamics“. Doctoral thesis, Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät, 2011. http://dx.doi.org/10.18452/16280.

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In dieser Arbeit werden die Folgen der Calvo-Annahme in dynamischen makroökonomischen Modellen untersucht. Dafür wird die Calvo-Annahme unter Anwendung des Konzepts der statistischen Hazardfunktion verallgemeinert. Ich untersuche zwei mögliche Anwendungen dieses Ansatzes innerhalb von DSGE-Modellen. Im ersten Artikel zeige ich, dass der Zugewinn an Handhabbarkeit, der aus der Calvo-Annahme für Neu-Keynesianische Modelle folgt, mit unerwünschten Folgen in Bezug auf die Inflationsdynamiken einher geht. Der zweite Artikel schätzt die aggregierte Hazardfunktion unter Verwendung des theoretischen Rahmens des ersten Artikels. Es zeigt sich, dass die Annahme einer konstanten Hazardfunktion, die aus der Calvo-Annahme folgt, von den Daten eindeutig abgelehnt wird. Im dritten Artikel analysiere ich die Implikationen der empirisch geschätzten Hazardfunktion für die Persistenz von Inflation und die Geldpolitik. Die Untersuchungen zeigen, dass mittels der empirisch plausiblen aggregierten Hazardfunktion Zeitreihen simuliert werden können, die mit der Persistenz der inflatorischen Lücke im US Verbraucherpreisindex konsistent sind. Anhand dieser Ergebnisse komme ich zu dem Schluss, dass die Hazardfunktion eine entscheidende Rolle für die dynamischen Eigenschaften von Inflation spielt. Der letzte Artikel wendet den selben Modellierungsansatz auf ein Real-Business-Cycle Model mit rigidem Arbeitsmarkt an. Unter Verwendung eines allgemeineren stochastischen Anpassungsprozess stelle ich fest, dass die Arbeitsmarktdynamiken von einem Parameter beinflusst werden, der das Monotonieverhalten der Hazardfunktion bestimmt. Insbesondere steigt die Volatilität des Beschäftigungsniveaus, wohingegen dessen Persistenz mit zunehmendem Parameterwert abnimmt.
The Calvo assumption (Calvo, 1983) is widely used in the macroeconomic literature to model market frictions that limit the ability of economic agents to re-optimize their control variables. In spite of its virtues, the Calvo assumption also implies singular adjustment behavior at the firm level as well as a restrictive aggregation mechanism for the whole economy. In this study, I examine implications of the Calvo assumption for macroeconomic dynamics. To do so, I extend the Calvo assumption to a more general case based on the concept of the statistical hazard function. Two applications of this approach are studied in the DSGE framework. In the first essay, I apply this approach to a New Keynesian model, and demonstrate that tractability gained from the Calvo pricing assumption is costly in terms of inflation dynamics. The second essay estimates aggregate price reset hazard function using the theoretical framework constructed in the first essay, and shows that the constant hazard function implied by the Calvo assumption is strongly rejected by the aggregate data. In the third essay, I further explore implications of the empirically based hazard function for inflation persistence and monetary policy. I find that the empirically plausible aggregate price reset hazard function can generate simulated data that are consistent with inflation gap persistence found in the US CPI data. Based on these results, I conclude that the price reset hazard function plays a crucial role for generating inflation dynamics. The last essay applies the same modeling approach to a RBC model with employment rigidity. I find that, when introducing a more general stochastic adjustment process, the employment dynamics vary with a parameter, which determines the monotonic property of the hazard function. In particular, the volatility of employment is increasing, but the persistence is decreasing in the value of the parameter.
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Pinto, Alberto Adrego. „Convergence of renormalisation and rigidity of dynamical systems“. Thesis, University of Warwick, 1991. http://wrap.warwick.ac.uk/65255/.

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Motivated by problems in the theory of renormalisation of dynamical systems, we study the properties of Markov families and fractals defined by embedded trees. Our main results concern the classification of Ck+a structures. Two topologically equivalent Markov families are Ck+a conjugate if they converge together rapidly enough. This result implies that the attractors of two systems at the accumulation point of periodic doubling are C2.11 conjugate. We also introduce and study the limit set of an exponential determined Markov family.
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Bücher zum Thema "Dynamic rigidity"

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Andresen, Florian. Exploring Meso-Level Dynamic Capabilities to Address the Capability Rigidity Paradox. Wiesbaden: Springer Fachmedien Wiesbaden, 2021. http://dx.doi.org/10.1007/978-3-658-32006-5.

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Burger, Marc, und Alessandra Iozzi, Hrsg. Rigidity in Dynamics and Geometry. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04743-9.

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Pinto, Alberto Adrego. Convergence of renormalisation and rigidity of dynamical systems. [s.l.]: typescript, 1991.

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Babillot, Martine. Rigidité, groupe fondamental et dynamique. Paris: SMF, 2002.

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Christoffel, Kai. The role of real wage rigidity and labor market frictions for unemployment and inflation dynamics. Bonn, Germany: IZA, 2005.

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Burger, Marc. Rigidity in Dynamics and Geometry: Contributions from the Programme Ergodic Theory, Geometric Rigidity and Number Theory, Isaac Newton Institute for the Mathematical Sciences Cambridge, United Kingdom, 5 January - 7 July 2000. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002.

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Hans, Duistermaat, und Śniatycki Jędrzej, Hrsg. Geometry of nonholonomically constrained systems. Singapore: World Scientific, 2010.

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Cushman, Richard H. Geometry of nonholonomically constrained systems. New Jersey: World Scientific, 2009.

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Cushman, Richard H. Geometry of nonholonomically constrained systems. New Jersey: World Scientific, 2009.

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Cushman, Richard H. Geometry of nonholonomically constrained systems. New Jersey: World Scientific, 2009.

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Buchteile zum Thema "Dynamic rigidity"

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Zhang, Zhengyou, und Olivier Faugeras. „Matching and Rigidity Constraints“. In 3D Dynamic Scene Analysis, 81–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-58148-9_6.

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Greiner, Alfred, und Bettina Fincke. „The Role of Real Wage Rigidity and Unemployment“. In Dynamic Modeling and Econometrics in Economics and Finance, 111–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01745-2_5.

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Ruthotto, Lars, Erlend Hodneland und Jan Modersitzki. „Registration of Dynamic Contrast Enhanced MRI with Local Rigidity Constraint“. In Biomedical Image Registration, 190–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31340-0_20.

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Andresen, Florian. „Introduction“. In Exploring Meso-Level Dynamic Capabilities to Address the Capability Rigidity Paradox, 1–14. Wiesbaden: Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-32006-5_1.

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Andresen, Florian. „Theoretical Framework“. In Exploring Meso-Level Dynamic Capabilities to Address the Capability Rigidity Paradox, 15–92. Wiesbaden: Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-32006-5_2.

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Andresen, Florian. „Empirical Methodology“. In Exploring Meso-Level Dynamic Capabilities to Address the Capability Rigidity Paradox, 93–124. Wiesbaden: Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-32006-5_3.

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Andresen, Florian. „Findings“. In Exploring Meso-Level Dynamic Capabilities to Address the Capability Rigidity Paradox, 125–237. Wiesbaden: Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-32006-5_4.

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Andresen, Florian. „Discussion“. In Exploring Meso-Level Dynamic Capabilities to Address the Capability Rigidity Paradox, 239–69. Wiesbaden: Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-32006-5_5.

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Andresen, Florian. „Conclusions“. In Exploring Meso-Level Dynamic Capabilities to Address the Capability Rigidity Paradox, 271–76. Wiesbaden: Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-32006-5_6.

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Lv, Zhaoyang, Kihwan Kim, Alejandro Troccoli, Deqing Sun, James M. Rehg und Jan Kautz. „Learning Rigidity in Dynamic Scenes with a Moving Camera for 3D Motion Field Estimation“. In Computer Vision – ECCV 2018, 484–501. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01228-1_29.

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Konferenzberichte zum Thema "Dynamic rigidity"

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Olszewski, Jakub. „Investigation of dynamic rigidity of direct driven rotary table“. In 2012 13th International Carpathian Control Conference (ICCC). IEEE, 2012. http://dx.doi.org/10.1109/carpathiancc.2012.6228700.

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Gordeev, B. A., S. N. Okhulkov, P. A. Zlobin und A. S. Plekhov. „Extreme values revelation of magnetorheological transformers dynamic rigidity of hydromounts“. In 2016 2nd International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2016. http://dx.doi.org/10.1109/icieam.2016.7911549.

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Shibaoka, Mikio, Kaoru Kusaka, Yasushi Nakanishi und Yoshiharu Itai. „New Approach to High Rigidity Body Construction Using Dynamic Analysis“. In SAE 2003 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-1332.

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Maslov, Igor V., Raymond McCafferty und James P. Rea. „Finite Element Analysis of Dynamic Rigidity of Diesel Engine Housing“. In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0152.

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Abstract High levels of dynamic loads in a modem diesel engine take place at low frequencies and are connected with the forced vibration of the engine under the action of excitation gas and inertia forces. The lower range of these frequencies are equivalent to the speed of the engine (two stroke) and half engine speed (four stroke). They lead to high stress levels and deformations and often cause internal damage or component failure as well as increasing vibration transmitted to the foundation. One of the most important factors in improving the reliability and durability of engine components and reducing the level of vibration is providing sufficient rigidity for the engine housing. Careful choice of the main dimensions and design parameters will greatly influence engine performance. An engineering approach to the Finite Element analysis of low frequency forced vibration is proposed for the elastic system including crankshaft, engine housing, elastic mounting and foundation. This approach is applied to the analysis of medium speed marine diesel engines with particular attention being paid to the analysis of the rigidity of the engine housing. A solution procedure is proposed to define the loads transmitted from the crankshaft to the main bearings. The procedure takes into account the reciprocal influence of elastic and inertial characteristics of the crankshaft and the engine housing mounting on the elastic foundation, alteration of load amplitudes according to the angular position of the crankshaft, and hydrodynamic behaviour of the lubricating oil film in the contact zone.
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Wang, Xiao-Yang, und Zheng Zhou. „Dynamic analysis of angular contact ball bearing with oil film rigidity“. In The 2nd Annual 2016 International Conference on Mechanical Engineering and Control System (MECS2016). WORLD SCIENTIFIC, 2017. http://dx.doi.org/10.1142/9789813208414_0005.

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Terumichi, Yoshiaki, Yoshihiro Suda und Kiyoshi Sogabe. „Dynamics of Rolling Wheel With Contact Rigidity and Slip“. In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21331.

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Abstract In this paper, we discuss the dynamics of a rolling wheel with contact rigidity and slip. We propose the approach, using the distance between the center of the wheel and the contact point as an index to the elastic contact for this problem. We discussed about the generation and disappearance condition of slip with dynamic load and initial vertical displacement, using some results for simple cases. It is shown that contact rigidity influences on the time when slip generates or disappears and duration time of slip. It is also clarified that when the friction force reaches the tangent force after slip, slip does not always stop.
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Haecker, Annika-verena, Gabriel N. Carryon, James L. Tangorra und Thomas Sattel. „Neural-Based Control of Compliant Foils With Spanwise Flexibility“. In ASME 2019 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/dscc2019-9045.

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Abstract The ability to change the spatial distribution of a compliant foil’s flexural rigidity can enhance the foil’s swimming performance capabilities but pose challenges to neural-based control of these types of foils. The same property that makes these foil’s effective propulsors also makes them challenging to control with a neural oscillator, namely the variation in the mechanical properties will cause the amplitude and phase of the sensory feedback signal to vary depending upon the placement of the sensor. In this study we investigate the effect of sensor placement on the entrainment characteristics of a coupled-system consisting of a neural oscillator driving a series of compliant foils with spanwise flexibility (i.e. spatially varying mechanical properties in the dorsal-ventral direction). We find that acquiring sensory feedback from the foil’s stiff region produces a broader range of frequencies over which entrainment occurs compared to acquiring feedback from the compliant region of a foil. Additionally, we characterize the thrust and lift forces generated by spanwise foils as a function of the foil’s flapping frequency and flexural rigidity.
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Liu, Shuguo, Jun Wang, Jie Hong und Dayi Zhang. „Dynamics Design of the Aero-Engine Rotor Joint Structures Based on Experimental and Numerical Study“. In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22199.

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This study investigated the rigidity and contact state of joint structures that influenced the rotor dynamic characteristics and imbalance response, and the curve for variable structure parameters and the external load. The consideration of rotor joint structures dynamics design was also discussed. The finite-element models were established by using 3D solid elements and surface-to-surface nonlinear contact elements between the interfaces for numerical analysis. The rotor dynamic characteristics were affected by the rigidity of joint structures, and the rotor imbalance response was affected by the contact state of the interfaces. The experimentation for measuring the static rigidity and dynamic contact state of bolted joints with different experimental cycles were performed. Both numerical simulation and experimental results showed that: Firstly, the stiffness of joint structures was not constant. There was a critical load Fcr, when the external load was less than Fcr, the stiffness of joint structures was K1; when the external load was more than Fcr, the bend stiffness of joint structures would drop to K2. The critical load Fcr was influenced by the length of interfaces and preload. Secondly, the contact state of joint structure interfaces varied after a long time of operating with alternating loads. The rotor imbalance was increased by fatigue damage accumulation and irreversible deformation. The study results show that the rigidity and contact state of joint structures vary with external loads and geometry structures, and would affect the rotor system operating. It is advisable to consider the influence of the position, structural parameter and external load of the rotor joint structures on aero-engine structure dynamics design.
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Garavaglia, Lorenzo, Elena Beretta, Sandra Strazzer, Felice Sala, Morena Delle Fave, Fabio Brunati, Francesca Passaretti und Simone Pittaccio. „Dynamic Splints, Functionally-Customized With Nitinol, Can Reduce Joint Rigidity in Pediatric Subjects With Spasticity“. In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14246.

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Neuromuscular diseases as a consequence of brain damage are complex phenomena involving disuse, immobility, brain tissue remodeling and cortical function remapping. They may have various causes and strike any part of the population. The vicious circle leading to a worsening of the patients’ conditions proceeds through muscle shortening by contractures, disruption of the normal reflex behavior and sensory problems, development of spasticity [1]. Physical rehabilitation alone or in association with surgery or pharmacological treatments can be useful in limiting those degenerations. Besides manual rehabilitation, splints and braces are prescribed to control the limb posture and obtain stretching of the muscles. The role of those orthoses is to maintain the paretic limb in a set ‘physiological’ position and let it relax into that posture, in an attempt to reduce muscle rigidity and contractures. However applying a fixed constraint to the limb and waiting for relaxation to take place, may cause discomfort, pain, skin rash, and sundry different complications [2]. Also, any residual voluntary movement is prevented by a fixed-angle splinting. In addition, all these negative characteristics limit tolerability and daily application times. This work presents a different way to promote limb repositioning, based on the application of NiTi-alloy-based dynamic splints, which favor mobility and any residual use of the affected limb. Furthermore it suggests that application of mild contact forces prolonged in time has the advantage of feeling less painful and uncomfortable for the patients, improving overall treatment tolerability.
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Barry, O. R., J. W. Zu und D. C. D. Oguamanam. „Free Vibration Analysis of a Beam With an Attached In-Span Beam With Tip Mass“. In ASME 2013 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/dscc2013-3733.

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A double-beam system is used to model a single conductor transmission line with a stockbridge damper. The base beam represents the conductor and is subjected to an axial tensile load. The in-span beam with a tip mass at each end models the Stockbridge damper and it is arbitrarily attached to the base beam. Using Hamilton’s principle, the system equations of motion are derived and an expression is presented for the frequency equation. The formulation is validated with finite element results in the literature. Parametric studies are done to investigate the influence of the flexural rigidity and location of the in-span beam on the lowest five natural frequencies of the system. Investigation is also performed to examine the effect of the distance separating to two beams.
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Berichte der Organisationen zum Thema "Dynamic rigidity"

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Smart, D. F., M. A. Shea, M. J. Golightly, M. Weyland und A. S. Johnson. Evaluation of the Dynamic Cutoff Rigidity Model Using Dosimetry Data From the STS-28 Flight. Fort Belvoir, VA: Defense Technical Information Center, Januar 2003. http://dx.doi.org/10.21236/ada423844.

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Smart, D. F., und M. A. Shea. The Space-Developed Dynamic Vertical Cutoff Rigidity Model and its Applicability to Aircraft Radiation Dose. Fort Belvoir, VA: Defense Technical Information Center, Februar 2003. http://dx.doi.org/10.21236/ada423850.

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