Relevant bibliographies by topics / Closed orbit theory

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Closed orbit theory'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Closed orbit theory"

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BRACK, MATTHIAS, and JÉRÔME ROCCIA. "CLOSED-ORBIT THEORY FOR SPATIAL DENSITY OSCILLATIONS." International Journal of Modern Physics E 19, no. 04 (2010): 725–34. http://dx.doi.org/10.1142/s0218301310015163.

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We briefly review a recently developed semiclassical theory1 for quantum oscillations in the spatial (particle and kinetic energy) densities of finite fermion systems and present some examples of its results. We then discuss the inclusion of correlations (finite temperatures, pairing correlations) in the semiclassical theory.
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WALS, J., H. H. FIELDING, and H. B. VAN LINDEN VAN DEN HEUVELL. "RYDBERG ELECTRON DYNAMICS IN EXTERNAL FIELDS." Modern Physics Letters B 09, no. 30 (1995): 1845–71. http://dx.doi.org/10.1142/s0217984995001844.

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We review the role which classical trajectories play in quantum-mechanical systems in a more or less chronological order guided by experimental observations. The onset of a renewed interest in classical dynamics was catalysed by the observation of unknown features in the absorption spectra of atoms in the presence of external magnetic and electric fields. Although the most dominant features in these spectra can be accounted for by the simple quantisation conditions for classical electrons, the finer details require a more sophisticated approach. Starting from the Feynman path-integral formalis
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Bartsch, T., J. Main, and G. Wunner. "The hydrogen atom in an electric field: closed-orbit theory with bifurcating orbits." Journal of Physics B: Atomic, Molecular and Optical Physics 36, no. 6 (2003): 1231–54. http://dx.doi.org/10.1088/0953-4075/36/6/312.

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Wang, Fan, Jürgen Gauss, and Christoph van Wüllen. "Closed-shell coupled-cluster theory with spin-orbit coupling." Journal of Chemical Physics 129, no. 6 (2008): 064113. http://dx.doi.org/10.1063/1.2968136.

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Wang, Yi-hao, De-hua Wang, and Jian-wei Li. "Photodetachment of H– ion in a nonuniform electric field." Canadian Journal of Physics 91, no. 8 (2013): 650–57. http://dx.doi.org/10.1139/cjp-2013-0164.

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The photodetachment of H– ions in a nonuniform electric field has been investigated on the basis of closed orbit theory. Firstly, we give a clear physical description of the detached electron's movement in a nonuniform electric field. Then we put forward an analytical formula for calculating the photodetachment cross section of this system. Our study suggests besides the closed orbit previously reported for the photodetachment of H– in a uniform electric field, some additional closed orbits are produced owing to the effect of the nonuniform electric field. Compared with the photodetachment cro
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Sharipov, X. F., B. Boymatov, and N. Abriyev. "SINGULAR FOLIATION GENERATED BY AN ORBIT OF FAMILY OF VECTOR FIELDS." Advances in Mathematics: Scientific Journal 10, no. 4 (2021): 2141–47. http://dx.doi.org/10.37418/amsj.10.4.28.

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Geometry of orbit is a subject of many investigations because it has important role in many branches of mathematics such as dynamical systems, control theory. In this paper it is studied geometry of orbits of conformal vector fields. It is shown that orbits of conformal vector fields are integral submanifolds of completely integrable distributions. Also for Euclidean space it is proven that if all orbits have the same dimension they are closed subsets.
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Ginzburg, Viktor L., and Başak Z. Gürel. "Non-contractible periodic orbits in Hamiltonian dynamics on closed symplectic manifolds." Compositio Mathematica 152, no. 9 (2016): 1777–99. http://dx.doi.org/10.1112/s0010437x16007508.

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We study Hamiltonian diffeomorphisms of closed symplectic manifolds with non-contractible periodic orbits. In a variety of settings, we show that the presence of one non-contractible periodic orbit of a Hamiltonian diffeomorphism of a closed toroidally monotone or toroidally negative monotone symplectic manifold implies the existence of infinitely many non-contractible periodic orbits in a specific collection of free homotopy classes. The main new ingredient in the proofs of these results is a filtration of Floer homology by the so-called augmented action. This action is independent of capping
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ROBINETT, R. W. "PERIODIC ORBIT THEORY ANALYSIS OF A FAMILY OF DEFORMED HEMISPHERICAL BILLIARD SYSTEMS." Surface Review and Letters 07, no. 01n02 (2000): 151–60. http://dx.doi.org/10.1142/s0218625x00000208.

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We present a periodic orbit theory analysis of a novel three-dimensional billiard system, namely a quasispherical cavity with infinite walls along the conical boundary defined by θ=Θ, where θ is the standard polar angle; for Θ=π/2 this reduces to the special case of a hemispherical infinite well, while for Θ=π it is a spherical well with points along the negative z axis excluded. We focus especially on the connections between subsets of the energy eigenvalue space and their contributions to qualitatively different classes of closed orbits.
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LEE, Min-Ho, Chang Woo BYUN, and Nark Nyul CHOI*. "Application of Closed Orbit Theory to Two-electron Atoms: Collinear Model." New Physics: Sae Mulli 63, no. 3 (2013): 274–79. http://dx.doi.org/10.3938/npsm.63.274.

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Kips, Annemieke, Wim Vassen, and Wim Hogervorst. "Application of closed-orbit theory to barium scaled-energy Stark spectra." Journal of Physics B: Atomic, Molecular and Optical Physics 33, no. 1 (1999): 109–21. http://dx.doi.org/10.1088/0953-4075/33/1/311.

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Dissertations / Theses on the topic "Closed orbit theory"

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Bates, Kenneth A. "Semiclassical analysis of perturbed two-electron states in barium." Columbus, OH : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1065906166.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xii, 170 p.: ill. (some col.). Includes abstract and vita. Advisor: Douglass Schumacher, Dept. of Physics. Includes bibliographical references (p. 125-130).
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Hernandez, Sonia active 21st century. "Low-thrust trajectory design techniques with a focus on maintaining constant energy." Thesis, 2014. http://hdl.handle.net/2152/25883.

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Analytical solutions to complex trajectory design problems are scarce, since only a few specific cases allow for closed-form solutions. The main purpose of this dissertation is to design simple algorithms for trajectory design using continuous thrust, with a focus on low-thrust applications. By “simple” here we seek to achieve algorithms that either admit an analytical solution, or require minimal input by the user and minimal computation time. The three main contributions of this dissertation are: designing Lyapunov-based closed-loop guidance laws for orbit transfers, finding semi-analytical
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Books on the topic "Closed orbit theory"

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Blundell, Katherine. 7. Eating more and growing bigger. Oxford University Press, 2015. http://dx.doi.org/10.1093/actrade/9780199602667.003.0007.

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How do black holes grow? There is a lot of matter orbiting around a black hole and this matter can interact with itself, but must observe the laws of gravity and conservation of angular momentum. ‘Eating more and growing bigger’ explains that the accreting matter is very often in the form of a disc. It goes on to discuss what accretion discs look like, how hot they are, and how you measure how fast a black hole is spinning. How close matter is able to orbit before being swallowed by the black hole tells you how fast the black hole itself must be spinning.
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Grivno, Max. 1. “The Land Flows with Milk and Honey”. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252036521.003.0002.

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This chapter examines northern Maryland's economy and workforce from the 1790s through the 1810s. The region had prospered during this period, given that the Napoleonic Wars disrupted farming and trade in Europe and the Caribbean, thus creating a void that allowed Americans to reap a windfall by supplying the belligerents and their colonies with foodstuffs. As commodity prices soared, northern Marylanders waded deeper into export markets and were drawn more closely into Baltimore's commercial orbit. In these heady decades, many people cast caution to the wind, speculating in land, purchasing c
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Hrushovski, Ehud, and François Loeser. Applications to the topology of Berkovich spaces. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691161686.003.0014.

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This chapter presents various applications to the topology of classical Berkovich spaces. It deduces from the main theorem several new results on the topology of V(superscript an) which were not known previously in such a level of generality. In particular, it shows that V(superscript an) admits a strong deformation retraction to a subspace homeomorphic to a finite simplicial complex and that V(superscript an) is locally contractible. The chapter also proves the existence of strong retractions to skeleta for analytifications of definable subsets of quasi-projective varieties and goes on to pro
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Schrijver, Karel. The Birth of Stars and Planets. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198799894.003.0005.

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Exoplanets were discovered only a century after the true nature of stars was revealed, and yet—as explained in this chapter—their existences are inseparably linked. The birth of stars in densely packed nurseries obscured by gas and dust initially hid how planetary systems formed around these stars. With powerful new telescopes, capable of looking from the infrared to X-rays, a complete picture has emerged. But first, astronomers had to work out the properties of the stars themselves so that eventually their planetary systems could be understood: planets can change orbits, toss asteroids about
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Book chapters on the topic "Closed orbit theory"

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Falb, Peter. "The Geometric Quotient Theorem: Closed Orbits." In Methods of Algebraic Geometry in Control Theory: Part I. Birkhäuser Boston, 1990. http://dx.doi.org/10.1007/978-1-4684-9221-7_16.

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Vadim, Kaloshin, and Zhang Ke. "Weak KAM Theory and Forcing Equivalence." In Arnold Diffusion for Smooth Systems of Two and a Half Degrees of Freedom. Princeton University Press, 2020. http://dx.doi.org/10.23943/princeton/9780691202525.003.0006.

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This chapter describes weak Kolmogorov-Arnold-Moser (KAM) theory and forcing relation. One change from the standard presentation is that one needs to modify the definition of Tonelli Hamiltonians to allow different periods in the t component. The chapter points out an alternative definition of the alpha function, namely, one can replace the class of minimal measures with the class of closed measures. It then considers a dual setting which corresponds to forward dynamic. It also looks at elementary solutions, static classes, and Peierls barrier. In many parts of the proof, the chapter studies the hyperbolic property of a minimizing orbit, for which the concept of Green bundles is very useful.
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Yung, Yuk L., and William B. DeMore. "Venus." In Photochemistry of Planetary Atmospheres. Oxford University Press, 1999. http://dx.doi.org/10.1093/oso/9780195105018.003.0011.

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Venus has been visited by a number of spacecraft. Those most important in advancing our understanding of the atmosphere include Mariner 10 (1974), Pioneer Venus (1978- 1992), and the series of Venera probes by the former USSR (1982-1986). The Pioneer Venus orbiter conducted more than a decade of monitoring of the upper atmosphere of Venus. The spacecraft data are supplemented by telescopic and satellite (in Earth orbit) observations. The astronomical data for Venus are summarized in table 8.1. Venus is a close but slightly smaller sibling of Earth. The radius is 6051 km, as compared to Earth's 6371 km. The mass is 4.87 x 1024 kg, a little less than Earth's 5.98 x 1024 kg. The gravity of Venus is 8.87 ms-2, as compared to Earth's 9.82 ms-2. The dynamical and orbital parameters of Venus are very different from those of Earth. The rotation of Venus is retrograde, with a period of 225 days. The planet has little obliquity, and its orbit is close to being circular. Thus there is little seasonal variation in insolation over a Cytherian year. Perhaps the greatest surprise about Venus is its dense, dry, and hot atmosphere of 92 bar (see figure 8.1). This is all the more surprising because the planet is completely covered by thick clouds. Figure 8.2 shows the altitude profiles of three modes of cloud particles in the middle atmosphere. The high albedo of Venus implies that the planet receives less energy from the sun than Earth despite its closer proximity to the sun. However, the surface of Venus is hot, with a temperature of 733 K, attributed to the greenhouse effect. The bulk of our knowledge of the atmosphere of Venus is derived from observations in the middle atmosphere (60-100 km altitude). At cloud-top levels (65 km), groundbased ultraviolet (UV) observations revealed a 4-5 day period, east-to-west circulation that is 60 times faster than the solid surface. The mechanism for generating this superrotation is not well understood. The net result of this rotation is that it gives the upper atmosphere an effective diurnal cycle of 4-5 days.
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Milnor, John. "Arithmetic of Unicritical Polynomial Maps." In Frontiers in Complex Dynamics, edited by Araceli Bonifant, Mikhail Lyubich, and Scott Sutherland. Princeton University Press, 2014. http://dx.doi.org/10.23943/princeton/9780691159294.003.0002.

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This chapter studies complex polynomials with only one critical point, relating arithmetic properties of the coefficients to those of periodic orbits and their multipliers and external rays. It first defines the complex polynomial maps of degree n ≥ 2, and draws an alternate normal form for studying periodic orbits. The chapter also discusses the notation for the integral closure. Next, the chapter discusses several statements about periodic orbits. It then proceeds to lay out the proofs of these statements, in the process detailing some basic properties of the integral closure. Finally, the chapter closes with a discussion of the critically finite case.
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Ehrenfeld, David. "Obsolescence." In Swimming Lessons. Oxford University Press, 2002. http://dx.doi.org/10.1093/oso/9780195148527.003.0016.

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At the end of the Cretaceous period, the last dinosaurs disappeared from the earth, setting off an evolutionary jubilee among the Milquetoast-like mammals that survived them, and preparing the ground for what was to become, 65 million years later, a permanent source of gainful occupation for scientists whose job it is to wonder why the dinosaurs died out. Scores of reasons have been given for this remarkable concatenation of extinctions. Global climate and sea level were changed by a city-sized asteroid striking the earth near what is now the Yucatan, or by a massive set of volcanic eruptions, or by the solar system passing through the core of a giant molecular cloud, perhaps colliding with a supercomet loosened from the Oort cluster, which orbits the Sun beyond Pluto. Theories of catastrophic extinction abound. Some of the most daring even conjure up the specter of an unseen companion star to our Sun, named Nemesis, whose eccentric orbit brings a wave of potentially deadly comet showers—and extinctions—every 26 million years. But there are also paleontologists who argue that the dinosaurs went away gradually, not suddenly, over a period of millions of years, and that toward the end they coexisted with the earliest hooved mammals, including ancestors of horses, cows, and sheep. If extinction was gradual, a different line of thought opens up: perhaps the dinosaurs died out because they couldn’t adapt and compete in a changing world. The big lummoxes were obsolete. I heard about the dinosaurs’ obsolescence back in my student days. It was as satisfying a notion then as it is today, especially if you didn’t think about it too hard. Here were these lumbering, pea-brained reptiles, barely able to walk and chew gum at the same time, while all around and underneath them, cleverly hiding behind clumps of primitive vegetation and cleverly burrowing in tunnels in the ground, were the nerdy but smart little mammals about to emerge from the shadows and begin their ascent to glory—somewhat, it occurs to me now, like Bill Gates in the waning days of heavy manufacturing.
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Chambers, John, and Jacqueline Mitton. "The Outermost Solar System." In From Dust to Life. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691175706.003.0014.

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This chapter illustrates how, until the mid-20th century, little was known about the true nature of asteroids and comets. Asteroids looked like single points of light through a telescope, and astronomers tended to think of them as miniature planets, albeit ones with somewhat more elliptical and inclined orbits. Comets seemed to constitute a separate family, distinct from asteroids. They grew much brighter as they approached the Sun, becoming enormously extended objects with a diffuse coma and one or more tails that could extend for millions of kilometers. The most puzzling aspect of comets was how they had managed to survive for the age of the solar system. Comets had such low masses that they could not be measured, yet they shed large amounts of material each time they passed close to the Sun to form their coma and tails.
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Verschuur, Gerrit L. "Offering Odds on Impact." In Impact! Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195101058.003.0016.

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There is no doubt that the earth continues to be struck by objects from space. Most of the impactors are very tiny, such as those that produce common meteor trails, and major collisions no longer happen very often. But if a large object, a half kilometer across say, were to strike our planet, the consequences would be devastating. In 1989 an asteroid large enough to bring civilization to the brink of total destruction missed earth by 6 hours and this close encounter in itself should be enough to give us food for thought. There will be other close shaves in the years to come, but no one can predict just when or how close. Only time will tell. Fortunately there are several dedicated groups of astronomers around the world searching for near-earth asteroids (NEAs) in order to catalog their existence and figure orbits lest any should be on a collision course. As a result of their efforts, crucial data are being obtained that will allow the probability of impact to be more accurately estimated, even if only in a statistical sense. The best anyone can do, or will ever be able to do, is to offer odds on the chance of collisions. Odds on comet impact, in the form of estimates of the period between such events, have been published for two centuries. Each generation no doubt felt that the latest estimates were superior to those that went before. For example, in 1861 James Watson, in A Popular Treatise on Comets, said that “it has been found by actual calculation, from the theory of probabilities, that if the nucleus of a comet having a diameter equal to only one fourth part of that of the earth...the probability of receiving a shock from it, is only one in two hundred and eighty-one millions.” This estimate was also quoted by Thomas Dick in 1840 who, in turn, credited it to Francois Arago for calculating this around 1800.
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Schwartz, Richard Evan. "Pinwheels and Quarter Turns." In The Plaid Model. Princeton University Press, 2019. http://dx.doi.org/10.23943/princeton/9780691181387.003.0015.

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This chapter is the first of three that will prove a generalization of the Graph Master Picture Theorem which works for any convex polygon P without parallel sides. The final result is Theorem 16.9, though Theorems 15.1 and 16.1 are even more general. Let θ‎ denote the second iterate of the outer billiards map defined on R <sup>2</sup> − P. Section 14.2 generalizes a construction in [S1] and defines a map closely related to θ‎, called the pinwheel map. Section 14.3 shows that, for the purposes of studying unbounded orbits, the pinwheel map carries all the information contained in θ‎. Section 14.4 will defines another dynamical system called a quarter turn composition. A QTC is a certain kind of piecewise affine map of the infinite strip S of width 1 centered on the X-axis. Section 14.5 shows that the pinwheel map naturally gives rise to a QTC and indeed the pinwheel map and the QTC are conjugate. Section 14.6 explains how this all works for kites.
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Martín, Marina. "Borges, the Apologist for Idealism." In The Paideia Archive: Twentieth World Congress of Philosophy. Philosophy Documentation Center, 1998. http://dx.doi.org/10.5840/wcp20-paideia199825427.

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In Nueva refutación del tiempo, Borges explicitly interprets both Berkeley and Hume as genuine exponents and "apologists" of idealism. We may not owe Berkeley the discovery of a doctrine which according to Borges is practically as "ancient" and "popular" as metaphysics itself. However, his arguments connote a unique philosophical achievement. Borges himself adheres to these arguments and goes beyond them. He makes Berkeley's doctrine flow into Hume's which in turn flows into the uniform ocean of pantheistic idealism as envisioned by Schopenhauer and by Oriental philosophy. A close reading of the story "Tlön, Uqbar, Orbis Tertius" shows how the epistemology inherent in the language descriptions of this planet leads its metaphysicians to move from the underlying Berkeleian-Humean principles to the acceptance of pantheistic idealism. This story is not only a subtle, imaginative fantasy; it is also a work of intellectual elegance reading deep into the problem of knowledge of the external world. Berkeley and Hume devoted their whole attention to this issue and developed views that could adequately address the problem. Borges avoids arguing whether their doctrine falls under the denomination of "immaterialism," "phenomenalism" or "idealism." He seems either to deliberately ignore this scholarly dispute or to go beyond it in an effort to let the texts speak for themselves. Thus, Berkeley's Principles, and Hume's Treatise and first Enquiry show a common fact: the world is mind-dependent.
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Tuck, Adrian F. "Generalized Scale Invariance." In Atmospheric Turbulence. Oxford University Press, 2008. http://dx.doi.org/10.1093/oso/9780199236534.003.0007.

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Probability distributions plotted to date from large volumes of high quality atmospheric observations invariably have ‘long tails’: relatively rare but intense events make significant contributions to the mean. Atmospheric fields are intermittent. Gaussian distributions, which are assumed to accompany second moment statistics and power spectra, are not seen. An inherently stochastic approach, that of statistical multifractals, was developed as generalized scale invariance by Schertzer and Lovejoy (1985, 1987, 1991); it incorporates intermittency and anisotropy in a way Kolmogorov theory does not. Generalized scale invariance demands in application to the atmosphere large volumes of high quality data, obtained in simple and representative coordinate systems in a way that is as extensive as possible in both space and time. In theory, these could be obtained for the whole globe by satellites from orbit, but in practice their high velocities and low spatial resolution have to date restricted them to an insufficient range of scales, particularly if averaging over scale height-like depths in the vertical is to be avoided; analysis has been successfully performed on cloud images, however (Lovejoy et al. 2001). Some suitable data were obtained as an accidental by-product of the systematic exploration of the rapid (1–4% per day) ozone loss in the Antarctic and Arctic lower stratospheric vortices during winter and spring by the high-flying ER-2 research aircraft in the late 1980s through to 2000. Data initially at 1Hz and later at 5Hz allowed horizontal resolution of wind speed, temperature, and pressure at approximately 200 m and later at 40 m, with ozone available at 1 Hz, over the long, direct flight tracks necessitated by the distances involved between the airfield and the vortex. Some later flights also had data from other chemical instruments, such as nitrous oxide, N2O, reactive nitrogen, NOy, and chlorine monoxide, ClO, which could sustain at least an analysis for H1, the most robust of the three scaling exponents. Better than four decades of horizontal scale were available for 1Hz and 5Hz data. Since then, a lesser volume of adequate data has been obtained away from the polar regions by the WB57F.
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Conference papers on the topic "Closed orbit theory"

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Edney, Stephen L. "Optimized Short Bearing Theory for Squeeze Film Dampers." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59283.

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It is well established that classical short bearing theory can be applied to assess squeeze film dampers whirling in circular centered orbits. This theory yields accurate values for the stiffness and damping coefficients for designs with small length-to-diameter (L/D) ratios (typically less than 0.5) whirling at amplitudes of less than half the damper radial clearance. For L/D ratio designs above 0.5 and/or whirling amplitudes approaching the damper radial clearance, the short bearing theory increasingly overestimates the stiffness and damping coefficients that stretch its applicability for so
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Jazar, G. Nakhaie, M. Mahinfalah, M. Rastgaar Aagaah, and F. Fahimi. "Analysis of Solitary Waves in Arteries." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/vib-48565.

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Solitary waves are coincided with separaterices, which surrounds an equilibrium point with characteristics like a center, a sink, or a source. The existence of closed or spiral orbits in phase plane predicts the existence of such an equilibrium point. If there exists another saddle point near that equilibrium point, separatrix orbit appears. In order to prove the existence of solution for any kind of boundary value problem, we need to apply a fixed-point theorem. We have used the Schauder’s fixed-point theorem to show that there exists at least one nontrivial solution for equation of wave moti
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Pennacchi, Paolo, and Lucia Frosini. "Computational Model for Calculating the Dynamical Behaviour of Generators Caused by Unbalanced Magnetic Pull and Experimental Validation." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35333.

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This paper presents the modelling of the unbalanced magnetic pull (UMP) in generators and its experimental validation in a real machine. UMP is one of most relevant effects of electromechanical interactions in rotating machinery and manifests itself when rotor eccentricity causes an imbalance of the electromagnetic forces acting upon rotor and stator surfaces, so that a net radial force is developed. In small and stiff machines, like electrical motors, this phenomenon can be avoided by means of carefully assembling and manufacturing. On the contrary, big generators of power plants, supported b
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El-Shafei, A. "Modeling Finite Squeeze Film Dampers." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30637.

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Most closed form solutions of Reynolds’ equation assume either a short bearing approximation or a long bearing approximation. These closed form approximations are used in rotordynamic simulation applications, otherwise a Finite Difference solution of Reynolds’ equation would be prohibitively time consuming. Recently, there have been proposed series solutions for Reynolds’ equation for special cases. In this paper, a perturbation solution to the governing equations is proposed to obtain a closed form solution of Reynolds’ equation for a finite squeeze film damper executing a circular centered o
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Birukov, I. N., V. A. Moiseev, and P. N. Ostroumov. "Simulation of the closed orbit distortion and correction in the 600 MeV proton storage ring." In Advanced beam dynamics workshop on effects of errors in accelerators, their diagnosis and corrections. AIP, 1992. http://dx.doi.org/10.1063/1.42302.

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Yin, Decao, and Carl M. Larsen. "Forced Motion Experiments With Measured Motions From Flexible Beam Tests Under Uniform and Sheared Flows." In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-83160.

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Hydrodynamic forces on a cylinder under realistic combinations of in-line (IL) and cross-flow (CF) vortex induced vibrations (VIV) have been investigated. Signals of strain gauges and accelerometers from the Norwegian Deepwater Programme (NDP) tests with a long, slender beam were used to identify cross section orbits. 19 cross sections almost evenly distributed along the pipe were selected, and their motions were applied in controlled motion experiments with a rigid cylinder. Dimensionless parameters like Reynolds number and non-dimensional frequency were identical for the two sets of experime
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Wu, Jie, Decao Yin, Halvor Lie, et al. "On the Occurrence of Higher Harmonics in the VIV Response." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-42061.

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Vortex Induced Vibrations (VIV) can lead to fast accumulation of fatigue damage and increased drag loads on slender marine structures. A cylinder subjected to VIV can vibrate in both in-line (IL) and cross-flow (CF) directions. The CF response is dominated by the primary shedding frequency and the IL response frequency is often two times of the primary CF frequency. In addition, higher harmonics can also be present. The third order harmonics are more pronounced when the motion orbit of the cylinder is close to “figure 8″ shape and cylinder is moving against the flow at its largest transverse m
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Shen, Yu, Steeve Montminy, and Wanping Zheng. "Design and Dynamical Analysis of a SAR Membrane Antenna Deployable Structure." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14464.

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Large deployable membrane antennas for Synthetic Aperture Radar (SAR) satellites have attracted much attention for their low mass, high packaging efficiency, and low fabrication cost. An extendible support structure (ESS) could be used to deploy and support a multi-layer membrane antenna in a precise configuration once it is deployed on orbit. In this paper, an ESS for a membrane antenna with several foldable frames is designed. The ESS can be synchronously deployed by a six-bar-linkage mechanism and several closed-cable loops. A kinematical model of the deployable mechanism is developed to ob
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Bowkett, Joseph, and Rudranarayan Mukherjee. "Comparison of Control Methods for Two-Link Planar Flexible Manipulator." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67937.

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While the majority of terrestrial multi-link manipulators can be considered in a purely kinematic sense due to their high stiffness, the launch mass restrictions of aerospace applications such as in-orbit assembly of large space structures result in low stiffness links being employed, meaning dynamics can no longer be ignored. This paper seeks to investigate the suitability of several different open and closed loop control techniques for application to the problem of end effector position control with minimal vibration for a low stiffness space based manipulator. Simulations of a representativ
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Timokha, Alexander N., and Ihor A. Raynovskyy. "Resonant Steady-State Sloshing in Upright Tanks: Effect of Three-Dimensional Excitations and Viscosity." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77534.

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Bearing in mind recent experimental and theoretical results showing that viscous damping can qualitatively affect resonant sloshing in clean tanks, the Narimanov-Moiseev multimodal sloshing theory for an upright circular container is revised to analytically analyze steady-state surface waves when the container performs a small-amplitude sway/roll/pitch/surge prescribed periodic motion with the forcing frequency close to the lowest natural sloshing frequency. The revised theory is applicable for the radius-scaled mean liquid depths h &gt; 1 providing the secondary resonance phenomenon does not
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