Relevant bibliographies by topics / Isotropic cylinder

Contents

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

Academic literature on the topic 'Isotropic cylinder'

Author: Grafiati
Published: 28 May 2022
Last updated: 29 May 2022

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Journal articles on the topic "Isotropic cylinder"

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Rattanawangcharoen, N., A. H. Shah, and S. K. Datta. "Reflection of Waves at the Free Edge of a Laminated Circular Cylinder." Journal of Applied Mechanics 61, no. 2 (June 1, 1994): 323–29. http://dx.doi.org/10.1115/1.2901448.

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A wave function expansion method is employed to solve the reflection problem of time-harmonic elastic waves incident upon the free edge of a semi-infinite laminated circular cylinder. Wave functions are obtained using a propagator matrix approach for laminated isotropic cylinders and by a Rayleigh-Ritz type approximation for laminated composite cylinders. The least-square technique as well as the variational method are employed to evaluate the complex amplitudes and the energy flux associated with the reflected waves. To validate the solutions and present algorithm, results are compared with analytical solutions whenever available. Examples include free-end reflection of waves in an isotropic solid rod, a two-layered isotropic cylinder, and a four-ply [ + 15/ −15/ +15/ −15] graphite/epoxy cylinder. Numerical experimentation shows that the least-square method provides poor results for the laminated anisotropic cylinder compared to those obtained through the variational technique.
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Pankaj, Thakur. "Elastic-plastic transition stresses in a transversely isotropic thick-walled cylinder subjected to internal pressure and steady-state temperature." Thermal Science 13, no. 4 (2009): 107–18. http://dx.doi.org/10.2298/tsci0904107p.

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Elastic-plastic transitional stresses in a transversely isotropic thick-walled cylinder subjected to internal pressure and steady-state temperature have been derived by using Seth's transition theory. The combined effects of pressure and temperature has been presented graphically and discussed. It has been observed that at room temperature, thick-walled cylinder made of isotropic material yields at a high pressure at the internal surface as compared to cylinder made of transversely isotropic material. With the introduction of thermal effects isotropic/transversely isotropic cylinder yields at a lower pressure whereas cylinder made of isotropic material requires less percentage increase in pressure to become fully-plastic from its initial yielding as compared to cylinder made of transversely isotropic material.
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Shanker, B., C. N. Nath, S. A. Shah, and P. M. Reddy. "Vibrations in a Fluid-Loaded Poroelastic Hollow Cylinder Surrounded by a Fluid in Plane-Strain Form." International Journal of Applied Mechanics and Engineering 18, no. 1 (March 1, 2013): 189–216. http://dx.doi.org/10.2478/ijame-2013-0013.

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Plane-strain vibrations in a fluid-loaded poroelastic hollow cylinder surrounded by a fluid are investigated employing Biot’s theory of wave propagation in poroelastic media. The poroelastic hollow cylinder is homogeneous and isotropic, while the inner and outer fluids are homogeneous, isotropic and inviscid. The frequency equation of the fluid-loaded poroelastic cylinder surrounded by a fluid is obtained along with several particular cases, namely, fluid-loaded poroelastic cylinder, fluid-loaded bore, poroelastic cylinder surrounded by a fluid and poroelastic solid cylinder submerged in a fluid. The frequency equations are obtained for axially symmetric, flexural and anti-symmetric vibrations each for a pervious and an impervious surface. Nondimensional frequency for propagating modes is computed as a function of the ratio of thickness to the inner radius of the core. The results are presented graphically for two types of poroelastic cylinders and then discussed.
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Aggarwal, A. K., Richa Sharma, and Sanjeev Sharma. "Collapse Pressure Analysis of Transversely Isotropic Thick-Walled Cylinder Using Lebesgue Strain Measure and Transition Theory." Scientific World Journal 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/240954.

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The objective of this paper is to provide guidance for the design of the thick-walled cylinder made up of transversely isotropic material so that collapse of cylinder due to influence of internal and external pressure can be avoided. The concept of transition theory based on Lebesgue strain measure has been used to simplify the constitutive equations. Results have been analyzed theoretically and discussed numerically. From this analysis, it has been concluded that, under the influence of internal and external pressure, circular cylinder made up of transversely isotropic material (beryl) is on the safer side of the design as compared to the cylinders made up of isotropic material (steel). This is because of the reason that percentage increase in effective pressure required for initial yielding to become fully plastic is high for beryl as compared to steel which leads to the idea of “stress saving” that reduces the possibility of collapse of thick-walled cylinder due to internal and external pressure.
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Chau, K. T. "Vibrations of Transversely Isotropic Finite Circular Cylinders." Journal of Applied Mechanics 61, no. 4 (December 1, 1994): 964–70. http://dx.doi.org/10.1115/1.2901587.

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This paper investigates the exact frequency equations for all the possible natural vibrations in a transversely isotropic cylinder of finite length. Two wave potentials are used to uncouple the equations of motion; the resulting hyperbolic equations are solved analytically for the vibration frequencies of a finite cylinder with zero shear tractions and zero axial displacement on the end surfaces and with zero tractions on the curved surfaces. In general, the mode shapes and the frequency equations of vibrations depend on both the range of the frequency and the elastic properties of the material. The vibration frequencies for sapphire cylinders are studied as an example. Two limiting cases are also considered: the long bar limit equals the frequency equation for the longitudinal vibration of bars obtained by Morse (1954) and by Lord Rayleigh (1945); and the frequency equation for thin disks (small length/radius ratio) is also obtained. The frequency for the first axisymmetric mode agrees with the experimental observation by Lusher and Hardy (1988) to within one percent. Natural frequencies for the first three longitudinal and circumferential modes are plotted for all cylinder geometries. The lowest frequency always corresponds to the first nonsymmetric mode regardless of the dimension of the cylinder. For axisymmetric vibration modes, numerical plots show that double roots exist in the frequency equations; such doublets were observed experimentally by Booker and Sagar (1971).
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Tsai, Y. M. "Longitudinal Motion of a Thick Transversely Isotropic Hollow Cylinder." Journal of Pressure Vessel Technology 113, no. 4 (November 1, 1991): 585–89. http://dx.doi.org/10.1115/1.2928799.

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The propagation of a longitudinal harmonic wave in a transversely isotropic shell has been investigated in the development of ultrasonic techniques for thick hollow composite cylinders. The characteristic equation for satisfying the stress-fee inner and outer cylindrical boundaries has been obtained in an exact form in terms of the wavelength, the cylinder radii and the material constants. The phase velocity of the fundamental mode is calculated for a wide range of the wavelength for various cylinder radii for some typical sample materials. The shell wave speeds for the second mode of vibration are also presented. Comparisons are made between shell wave speeds and plate wave speeds. The spread of the wave speeds for the composite shells is shown to be much wider than that for an isotropic shell.
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Sharma, Sanjeev, Ila Sahay, and Ravindra Kumar. "Thermo elastic-plastic transition of transversely isotropic thick-walled circular cylinder under internal and external pressure." Multidiscipline Modeling in Materials and Structures 10, no. 2 (August 5, 2014): 211–27. http://dx.doi.org/10.1108/mmms-03-2013-0026.

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Purpose – The purpose of this paper is to provide the guidance on a design and integrity evaluation of a cylinder under pressure, for which stress analysis has been done for transversely isotropic thick-walled circular cylinder under internal and external pressure with thermal effects. Design/methodology/approach – Transition theory has been used to evaluate plastic stresses based on the concept of generalized principal Lebesgue strain measure which simplifies the constitutive equations and helps to achieve better agreement between the theoretical and experimental results. Findings – It can be concluded that circular cylinder with thermal effects under internal and external pressure made of isotropic material (steel) is on the safer side of the design as compared to the cylinder made of transversely isotropic material (i.e. magnesium and beryl) because percentage increase in effective pressure required for initial yielding to become fully plastic is high for isotropic material (steel) as compared to transversely isotropic material (i.e. magnesium and beryl). It can also be concluded that out of two transversely isotropic materials, beryl is better choice for design of cylinder as compared to magnesium material because percentage increase in effective pressure required for initial yielding to become fully plastic is high for beryl as compared to magnesium. Originality/value – A detailed investigation of thermal transversely isotropic thick-walled circular cylinder under internal and external pressure has been done which leads to the idea of “stress saving” that minimizes the possibility of fracture of cylinder.
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Witherell, M. D., and M. A. Scavullo. "Stress Analysis and Weight Savings of Internally Pressurized Composite-Jacketed Isotropic Cylinders." Journal of Pressure Vessel Technology 112, no. 4 (November 1, 1990): 397–403. http://dx.doi.org/10.1115/1.2929895.

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An isotropic cylinder designed to have a specific bore displacement per unit of internal pressure can be made lighter by removing material from the outer diameter and replacing it with the correct amount of a stiff lightweight composite material. A stress solution is presented for an internally pressurized compound cylinder constructed from an isotropic liner jacketed with a cylindrically orthotropic composite material. The solution is used to determine the set of compound cylinder geometries which have equivalent bore hoop strain to that of an isotropic monoblock cylinder. An equation for predicting the equivalent compound cylinder geometry which provides the maximum possible weight savings over the isotropic design is also presented. To verify the theory, an experimental study was conducted involving the measurement of bore strain for internally pressurized steel liners jacketed with a graphite bismaleimide composite.
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Zubov, L. M. "Large deformations of a cylindrical tube with prestressed coatings." Доклады Академии наук 484, no. 5 (May 16, 2019): 542–46. http://dx.doi.org/10.31857/s0869-56524845542-546.

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The problem of large deformations in a combined nonlinear elastic hollow cylinder under internal and external pressures, loaded with a longitudinal force and torque at the end faces, is under consideration. The combined cylinder is a tube with the internal and external coatings in the form of prestressed hollow circular cylinders. An exact solution to the problem is found, which is valid for any model of isotropic incompressible elastic materials.
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Talesnick, M. L. "Reliability of thin-walled cylinder tests for elastic properties of anisotropic rocks." Canadian Geotechnical Journal 33, no. 6 (December 1, 1996): 1008–14. http://dx.doi.org/10.1139/t96-126.

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Elastic properties of transverse isotropic rocks may be theoretically determined by subjecting a single hollow cylinder specimen to a set of two simple stress conditions. The reliability of the methodology is considered by testing both thin-walled hollow cylinders and thick-walled hollow cylinders. The results indicate that the testing procedure produces consistent material parameters, sample preparation does not seem to induce changes in the specimen behaviour, and that the assumptions implemented in the determination of the material parameters are reasonable. Key words: hollow cylinder, anisotropy, elasticity, test method.
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Dissertations / Theses on the topic "Isotropic cylinder"

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Shatalov, MY, AC Every, and AS Yenwong-Fai. "Analysis of non-axisymmetric wave propagation in a homogeneous piezoelectric solid circular cylinder of transversely isotropic material." Elsevier, 2008. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001768.

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a b s t r a c t A study concerning the propagation of free non-axisymmetric waves in a homogeneous piezoelectric cylinder of transversely isotropic material with axial polarization is carried out on the basis of the linear theory of elasticity and linear electro-mechanical coupling. The solution of the three dimensional equations of motion and quasi-electrostatic equation is given in terms of seven mechanical and three electric potentials. The characteristic equations are obtained by the application of the mechanical and two types of electric boundary conditions at the surface of the piezoelectric cylinder. A novel method of displaying dispersion curves is described in the paper and the resulting dispersion curves are presented for propagating and evanescent waves for PZT-4 and PZT-7A piezoelectric ceramics for circumferential wave numbers m = 1, 2, and 3. It is observed that the dispersion curves are sensitive to the type of the imposed boundary conditions as well as to the measure of the electro-mechanical coupling of the material.
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Верещака, Сергій Михайлович, Сергей Михайлович Верещака, Serhii Mykhailovych Vereshchaka, О. О. Позовний, and Є. Ю. Почкун. "Міцність багатошарового циліндра при дії внутрішнього тиску." Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/40274.

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Рішення задачі напружено-деформированого стану анізотропної циліндричної оболонки кінцевої довжини від дії внутрішнього і зовнішнього гідростатичного тисків для випадку безмоментного стану запропоноване в аналогічно задачи Ламе для товстостінного ізотропного циліндру.
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Chitikireddy, Ravi. "Laser generated thermoelastic waves in finite and infinite transversely isotropic cylinders." Taylor & Francis Group, LLC, 2010. http://hdl.handle.net/1993/8445.

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This thesis presents a theoretical study of thermoelastic guided waves in cylinders in the context of Lord-Shulman generalized theory of thermoelasticity. Two different methods were formulated to study dispersion relations in infinite cylinders. One of them is a Semi Analytical Finite Element (SAFE) method and the other is an analytical method. In the SAFE method, the dispersion equation has been formulated as a generalized eigenvalue problem by treating radial displacement and temperature with a one dimensional finite element model through the thickness of the cylinder. In the analytical method, displacement potentials are introduced to obtain the dispersion relations of guided wave modes. This method is applicable to isotropic cylinders and has been developed primarily to cross check the SAFE formulation. Frequency spectra obtained by both methods for an isotropic cylinder have shown excellent agreement with each other. Since the SAFE method can be used for an anisotropic composite cylinder, guided wave modes for anisotropic and composite cylinders are presented. Transient analysis of ultrasonic guided waves generated by concentrated heating of the outer surface of an infinite anisotropic cylinder has also been studied. The SAFE method is employed to model the response of a cylinder due to a pulsed laser focused on its surface. Green’s functions were constructed numerically by superposition of guided wave modes in frequency and wave number domains. Time histories of the propagating modes are then calculated by applying an inverse Fourier transformation in the time domain. Transient radial displacements of longitudinal and flexural modes of a silicon nitride cylinder are presented. Propagation of thermoelastic waves in finite length circular cylinders have also been investigated. The SAFE method is used to simulate the guided wave modes in the cylinder. Frequency spectra obtained by the SAFE formulation, for a finite length transversely isotropic cylinder, are validated by comparing the numerical results with relevant publications. Frequency spectra for axisymmetric and asymmetric modes in a silicon nitride finite cylinder with both ends insulated and restrained by frictionless rigid walls are presented. The plain strain problem of circumferential guided waves is also studied and the results are validated for an isothermal case.
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Bendadouche, Hocine. "Les modules en mécanique des sols : comparaison des essais triaxiaux, oedométriques et cylindres dilatables." Châtenay-Malabry, Ecole centrale de Paris, 1993. http://www.theses.fr/1993ECAP0330.

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Le mot module est utilisé en mécanique des sols avec des sens différents et mesure avec des appareils différents ayant des précisions différentes. Nous avons cherche à classer, à comparer et a donner des corrélations élémentaires par classe. Une première classe est relative à l'élasticité non linéaire du type hertz. Nous avons réanalysé des essais de compression isotrope Wiendieck et Biarez pour montrer que les modules isotropes des sables et des billes étaient compatibles avec la relation précédente et en accord avec les modules de compression isotrope. Une deuxième classe de modules non élastiques est utilisée en mécanique des sols pour les calculs de tassement des fondations et plus généralement la déformation des ouvrages en service ou les déformations sont souvent inférieures a 10-² or les appareils triaxiaux courants sont très peu précis dans ce domaine. Nous avons utilisé des hyperboles pour extrapoler dans les petites déformations. L'indice des vides e varie peu par rapport à Ip, nous avons donc proposé des corrélations entre les paramètres des hyperboles en 1/Ip. Enfin le regroupement d'essais effectués dans des cylindres métalliques très dilatables a montré que l'on pouvait obtenir des valeurs de l'angle de frottement sans les difficultés engendrées par les localisations de grandes déformations fréquentes dans l'appareil triaxial
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Perton, Mathieu. "Ultrasons rayonnés par une source laser ponctuelle dans des milieux isotropes transverses et applications à la mesure du tenseur d'élasticité de cylindres et de couches minces." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2006. http://tel.archives-ouvertes.fr/tel-00179548.

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Le travail présenté dans ce mémoire porte sur le rayonnement d'ultrasons générés par des sources laser linéiques ou ponctuelles dans des milieux anisotropes, de géométries planes monocouches ou bicouches ou de géométries cylindriques, et sur son application à la mesure du tenseur d'élasticité. Un dispositif classique d'ultrasons laser, constitué d'un laser YAG et d'une sonde interférométrique, permet d'étudier la réponse de cylindres de diamètres millimétriques à différentes interactions laser-matière. Un dispositif d'acoustique picoseconde est aussi utilisé afin d'étudier la diffraction d'ondes acoustiques dans des films plans d'épaisseurs micrométriques. Des modèles numériques ont été développés pour rendre compte des signaux obtenus expérimentalement. L'influence des réflexions optiques sur les interfaces est notamment analysée. L'écriture des fonctions de directivité en milieux anisotropes pour des sources volumiques et l'étude des diagrammes de directivité correspondant apportent par ailleurs des renseignements qualitatifs nécessaire à l'interprétation des signaux.
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Stoyko, Darryl Keith. "Interpreting wave propagation in a homogeneous, isotropic, steel cylinder." Thesis, 2005. http://hdl.handle.net/1993/97.

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The majority of commercially available ultrasonic transducers used to excite and measure wave propagation in structures can be coupled only to a free surface. While convenient, this method is likely to excite multiple structural modes, making data interpretation difficult. Furthermore, the many modes excited make predicting the structure’s response a computationally intensive task. Here the dynamic radial displacement induced by a transient radial point load is calculated at more than 230,000 points on the outer surface of a virgin steel pipe to simulate a typical experiment. The radial component of the displacement field is calculated by convolving the Green’s functions of the pipe with the transient load. These functions are calculated on personal computers (in a distributed arrangement) by employing modal summation. The mode shapes are obtained from a Semi-Analytical Finite Element formulation used in conjunction with a separation of variables. The results are presented in a four dimensional animation, providing easier interpretations and insight into how to best select observation points for the detection of defects. The accuracy of the calculated displacements is verified experimentally. Agreement is good when magnitude and phase corrections are incorporated from the frequency response curves of the transducers used.
February 2005
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Yenwong-Fai, Alfred Sevidzem. "Wave propagation in a homogenous piezoelectric solid cylinder of transversely isotropic material." Thesis, 2009. http://hdl.handle.net/10539/6000.

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The ultrasonic nondestructive evaluation (NDE) of composite cylinders is dependent on the thorough understanding of the propagation characteristics of the wave modes in these materials. In this dissertation the propagation of free harmonic non-axisymmetric (flexural) waves in a homogeneous piezoelectric solid cylinder of transversely isotropic material is studied, on the basis of the linear theory of elasticity and linear electromechanical coupling of the elastic and electric variables. The equations of motion of the cylinder are developed using the constitutive relations of a piezoelectric material possessing transversely isotropic symmetry properties, with the symmetry direction collinear with the axis of the cylinder. The physically allowed boundary conditions are derived from Hamilton’s variational principle. Four displacement and three electric potentials satisfying Helmholtz’s equation are used to solve the equations of motion of the cylinder. The characteristic equation (dispersion relation) is obtained by the application of the boundary conditions satisfied by the elastic and electric variables. The characteristic equation is solved numerically by a novel method which makes use of the three dimensional plot of the log of the modulus of the left hand side of the characteristic equation. The results are numerically illustrated via dispersion curves of a sample PZT-4 composite cylinder. Significant changes in the propagating wave modes are revealed by the dispersion curves, when compared with a corresponding non-piezoelectric model of a PZT-4 cylinder. It is also observed that the dispersion curves are sensitive to the form of the electric boundary conditions.
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Maluleke, Gaza Hand-sup. "Dynamic boundary value problems for transversely isotropic cylinders and spheres in finite elasticity." Thesis, 2007. http://hdl.handle.net/10539/2062.

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Student Number : 9202983Y - PhD thesis - School of Computational and Applied Mathematics - Faculty of Science
A derivation is given of the constitutive equation for an incompressible transversely isotropic hyperelastic material in which the direction of the anisotropic director is unspecified. The field equations for a transversely isotropic incompressible hyperelastic material are obtained. Nonlinear radial oscillations in transversely isotropic incompressible cylindrical tubes are investigated. A second order nonlinear ordinary differential equation, expressed in terms of the strain-energy function, is derived. It has the same form as for radial oscillations in an isotropic tube. A generalised Mooney-Rivlin strainenergy function is used. Radial oscillations with a time dependent net applied surface pressure are first considered. For a radial transversely isotropic thin-walled tube the differential equation has a Lie point symmetry for a special form of the strain-energy function and a special time dependent applied surface pressure. The Lie point symmetry is used to transform the equation to an autonomous differential equation which is reduced to an Abel equation of the second kind. A similar analysis is done for radial oscillations in a tangential transversely isotropic tube but computer graphs show that the solution is unstable. Radial oscillations in a longitudinal transversely isotropic tube and an isotropic tube are the same. The Ermakov-Pinney equation is derived. Radial oscillations in thick-walled and thin-walled cylindrical tubes with the Heaviside step loading boundary condition are next investigated. For radial, tangential and longitudinal transversely isotropic tubes a first integral is derived and effective potentials are defined. Using the effective potentials, conditions for bounded oscillations and the end points of the oscillations are obtained. Upper and lower bounds on the period are derived. Anisotropy reduces the amplitude of the oscillation making the tube stiffer and reduces the period. Thirdly, free radial oscillations in a thin-walled cylindrical tube are investigated. Knowles(1960) has shown that for free radial oscillations in an isotropic tube, ab = 1 where a and b are the minimum and maximum values of the radial coordinate. It is shown that if the initial velocity v0 vanishes or if v0 6= 1 but second order terms in the anisotropy are neglected then for free radial oscillations, ab > 1 in a radial transversely isotropic tube and ab < 1 in a tangential transversely isotropic tube. Radial oscillations in transversely isotropic incompressible spherical shells are investigated. Only radial transversely isotropic shells are considered because it is found that the Cauchy stress tensor is not bounded everywhere in tangential and longitudinal transversely isotropic shells. For a thin-walled radial transversely isotropic spherical shell with generalised Mooney-Rivlin strain-energy function the differential equation for radial oscillations has no Lie point symmetries if the net applied surface pressure is time dependent. The inflation of a thin-walled radial transversely isotropic spherical shell of generalised Mooney-Rivlin material is considered. It is assumed that the inflation proceeds sufficiently slowly that the inertia term in the equation for radial oscillations can be neglected. The conditions for snap buckling to occur, in which the pressure decreases before steadily increasing again, are investigated. The maximum value of the parameter for snap buckling to occur is increased by the anisotropy.
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El-Gamal, Mohammed M. Z. "Multiple scattering and beam scanning by arrays of isotropic and anisotropic cylinders." 1988. http://hdl.handle.net/1993/16780.

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Books on the topic "Isotropic cylinder"

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Arnold, S. M. A thermoelastic transversely isotropic thick walled cylinder/disk application: An analytical solution and study. Cleveland, Ohio: Lewis Research Center, 1989.

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A thermoelastic transversely isotropic thick walled cylinder/disk application: An analytical solution and study. Cleveland, Ohio: Lewis Research Center, 1989.

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Steigmann, David J. Some boundary-value problems for uniform isotropic incompressible materials. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198567783.003.0007.

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This chapter outlines the formulation and explicit solution of a number of simple boundary-value problems. Analysis is facilitated by the constraint of incompressibility. Examples include expansionand contraction of cylinders, torsion, azimuthal shear, and cavitation under conditions of spherical symmetry Further examples involving anti-plane shear are discussed in the Problems.
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Book chapters on the topic "Isotropic cylinder"

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Smith, Donald R. "Torsion of an Isotropic Elastic Circular Cylinder." In An Introduction to Continuum Mechanics — after Truesdell and Noll, 305–29. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-017-0713-8_13.

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Mekhtiev, Magomed F. "Free Vibrations of Isotropic Hollow Cylinder and Closed Hollow Sphere." In Advanced Structured Materials, 103–28. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74354-7_3.

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Laverty, Richard R., and M. L. Peterson. "Elastic Response of a Thick Isotropic Cylinder to an Arbitrary Pressure Applied at One End." In Review of Progress in Quantitative Nondestructive Evaluation, 255–62. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4791-4_31.

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Pavlakovic, Brian, and Mike Lowe. "A General Purpose Approach to Calculating the Longitudinal and Flexural Modes of Multi-Layered, Embedded, Transversely Isotropic Cylinders." In Review of Progress in Quantitative Nondestructive Evaluation, 239–46. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4791-4_29.

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Yu., Michael. "Analysis of Axisymmetric and Non-Axisymmetric Wave Propagation in a Homogeneous Piezoelectric Solid Circular Cylinder of Transversely Isotropic Material." In Wave Propagation in Materials for Modern Applications. InTech, 2010. http://dx.doi.org/10.5772/6859.

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Conference papers on the topic "Isotropic cylinder"

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Sun, Jimei, Yu Dong, Yong Xu, and K. C. Tsao. "In Cylinder Gas Motions Via Non-Isotropic Turbulent Modeling and Experiment." In 1989 SAE International Off-Highway and Powerplant Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1989. http://dx.doi.org/10.4271/891915.

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WANG, Hui-Ming, and HAO-JIANG DING. "RADIAL VIBRATION OF ELASTO-PIEZOELECTRIC COMPOSITE CYLINDER WITH AN ISOTROPIC ELASTIC CORE." In Proceedings of the 2006 Symposium. WORLD SCIENTIFIC, 2007. http://dx.doi.org/10.1142/9789812770165_0018.

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Horimoto, Yasufumi, Yusuke Suzuki, Kazuki Hagiwara, and Yasuo Kawaguchi. "Experimental Analysis of Turbulent Wake Development Behind a Permeable Cylinder." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-4790.

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Abstract To investigate the effect of permeability on turbulent wake behind a cylinder in uniform flow, we conduct particle image velocimetry on turbulent wake behind permeable cylinders, which are made of mesh sheets, of different permeabilities and compare the results with those for a solid cylinder. For relatively lower permeability, turbulent wake is quite similar to the case for a solid cylinder except for a slight shift in the streamwise direction of the reversed flow region implying turbulent Kármán vortex shedding. On the other hand, for higher permeability, the structure of turbulence is qualitatively different. More concretely, turbulent Kármán vortices disappear. Interestingly, however, the momentum deficit for such flow is comparable with that of a solid cylinder. This considerable momentum deficit can be understood with isotropic turbulence caused by the flow penetrating through the mesh constructing the cylinders. These results imply that turbulent wake behind a permeable cylinder involves dynamics both of wake and grid turbulence and the latter one dominates when permeability is sufficiently high.
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Cheng, Dan, and Hongxing Zheng. "Study on Electromagnetic Scattering of Perfectly Conducting Cylinder Coated with Nonuniform Isotropic Plasma." In 2015 8th International Conference on Intelligent Networks and Intelligent Systems (ICINIS). IEEE, 2015. http://dx.doi.org/10.1109/icinis.2015.9.

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Fan, Y. "Nondestructive evaluation of a transversely isotropic cylinder encased in a solid elastic medium." In 26th Annual review of progress in quantitative nondestrictive evaluation. AIP, 2000. http://dx.doi.org/10.1063/1.1306038.

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6

Angerhausen, Julian, Hubertus Murrenhoff, Leonid Dorogin, Michele Scaraggi, Boris Lorenz, and Bo N. J. Persson. "Influence of Anisotropic Surfaces on the Friction Behaviour of Hydraulic Seals." In BATH/ASME 2016 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fpmc2016-1739.

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In the modelling of the leakage rate, friction force or contact pressure distribution of hydraulic seals is quite common to assume the mating surfaces to be characterized by a random isotropic roughness. However, due to different surface finishing methods, such as coating, grinding or polishing, roughness with anisotropic characteristics is often generated. In this paper a first experimental investigation of the influence of such anisotropic surfaces on the sliding friction is provided. For this purpose, a test rig has been designed and set up to investigate a soft, lubricated line contact representative of a generic reciprocating hydraulic seal. In particular, an O-ring cord is squeezed into contact with a steady rotating rigid cylinder. In order to adopt a cylinder-on-flat configuration, the diameter of the rigid cylinder is chosen to be significantly larger than the O-ring (cross-section) diameter. Furthermore, three cylinders with different surfaces are used: One (sandblasted) isotropic surface and two anisotropic surfaces roughness, scratched perpendicularly or along the azimuthal direction. Therefore, under temperature control, Stribeck curves have been measured at different squeezing loads and surface roughness, showing a neat influence of the surface roughness characteristics on the friction force. Finally, the experimental results are compared with the predictions provided by a recent mean field theory of soft contact (e.g. rubber) lubrication.
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Shatalov, Michael Y., Arthur G. Every, and Alfred S. Yenwong-Fai. "Non-axisymmetric vibrations of a transversely isotropic piezoelectric cylinder with different types of electric boundary conditions." In International Congress on Ultrasonics. Vienna University of Technology, 2007. http://dx.doi.org/10.3728/icultrasonics.2007.vienna.1162_shatalov.

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8

Subotic, M., and F. C. Lai. "Flows in Rotating Cylinders With a Porous Lining." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41399.

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Flow and temperature fields in an annulus between two rotating cylinders have been examined in this study. While the outer cylinder is stationary, the inner cylinder is rotating with a constant angular speed. A homogeneous and isotropic porous layer is press-fit to the inner surface of the outer cylinder. The porous sleeve is saturated with the fluid that fills the annulus. The Brinkman-extended Darcy equations are used to model the flow in the porous layer while Navier-Stokes equations are used for the fluid layer. The conditions applied at the interface between the porous and fluid layers are the continuity of temperature, heat flux, tangential velocity and shear stress. Analytical solutions have been attempted. Through these solutions, the effects of Darcy number, Brinkman number, and porous sleeve thickness on the velocity profile and temperature distribution are studied.
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MacDonald, James R., and Claudia M. Fajardo. "Turbulence Anisotropy Investigations in an Internal Combustion Engine." In ASME 2020 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/icef2020-3029.

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Abstract The assumption of isotropic turbulence is commonly incorporated into models of internal combustion engine (ICE) in-cylinder flows. While preliminary analysis with two-dimensional velocity data indicates that the turbulence may tend to isotropy as the piston approaches TDC, the validity of this assumption has not been fully investigated, partially due to lack of three-component velocity data in ICEs. In this work, the velocity was measured using two-dimensional, three-component (2D-3C) particle image velocimetry in a single-cylinder, motored, research engine to investigate the evolution of turbulence anisotropy throughout the compression stroke. Invariants of the Reynolds stress anisotropy tensor were calculated and visualized, through the Lumley triangle, to investigate turbulence states. Results showed the turbulence to be mostly anisotropic, with preferential tendency toward 2D axisymmetry at the beginning of the compression stroke and approaching isotropy near top-dead-center. Findings provide new insights into turbulence in dynamic, bounded flows to assist with the development of physics-based, quantitative models.
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10

Du, Jikai. "Acoustic Wave Propagation Simulation in Double-Layered Composite Cylindrical Structures." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65085.

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Ultrasound guided waves have been recognized as an effective tool for the rapid and long-range inspection of composite cylindrical structures, but its application is still limited due to the complex nature of guided waves and their interactions with material geometry and material properties. This paper uses finite element technique to simulate the ultrasound guided wave propagation in layered composite cylinders. Ultrasound guided wave propagation was analyzed in a double-layered cylinder composed of an anisotropic unidirectional carbon fiber/epoxy resin composite layer wrapped on an isotropic aluminum cylinder. The carbon fiber orientation is either along the cylinder circumferential direction or axial direction. Ultrasound wave is excited from a PZT-4 transducer which is placed on the top of a Plexiglas wedge to adjust the ultrasound incident angle into the cylinder. Low ultrasound frequencies at 0.5 and 1.0 MHz were selected to improve the effect of attenuation and simulation efficiency. Wave propagation velocities and wave structures were analyzed at various positions of the cylinder. This study helped to examine the effect of fiber orientation on wave dispersion characteristics and to assess the feasibility of applying ultrasound guided wave technique for the evaluation of composite cylindrical structures.
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