Relevant bibliographies by topics / Conical rotors

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

Academic literature on the topic 'Conical rotors'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Conical rotors"

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Baroiu, Nicuşor, Viorel Păunoiu, Virgil Gabriel Teodor, Florin Susac, and Nicolae Oancea. "Geometrical analysis, for rapid prototyping, of the compressor’s helical conic rotor model." MATEC Web of Conferences 178 (2018): 02006. http://dx.doi.org/10.1051/matecconf/201817802006.

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The conical rotary compressor represents a solution for gases compression, for relatively small flow, in conditions of a superior energetic efficiency. Although the theoretical solution for the helical conical compressor was elaborated decades ago, a viable technology solution become possible at industrial level only after the development of machine tools with numerically controlled axes. In this paper is proposed a study, analytical and graphical, concerning the geometry of conical rotary compressor’s rotors, modelled by rapid prototyping technology. The propose modelling allow to elaborate v
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Rane, Sham, Ahmed Kovačević, and Nikola Stošić. "Grid Generation for CFD Analysis and Design of a Variety of Twin Screw Machines." Designs 3, no. 2 (2019): 30. http://dx.doi.org/10.3390/designs3020030.

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A detailed study of the fluid flow and thermodynamic processes in positive displacement machines requires 3D CFD modeling in order to capture their real geometry, including leakage gaps. However, limitations in the conventional computational grids, used in commercial software packages, exclude their use for classical twin screw machines. The screw compressor rotor grid generator (SCORG) is a customized grid generation tool developed to overcome these limitations. This paper shows how it can be further extended to include non-conventional rotor designs, such as those with variable lead or profi
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Hufenbach, W., M. Gude, B. Zhou, and L. Kroll. "Stress and failure analysis of thick-walled conical composite rotors." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 218, no. 1 (2004): 1–8. http://dx.doi.org/10.1177/146442070421800101.

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Mohiuddin, M. A., and Y. A. Khulief. "Modal characteristics of rotors using a conical shaft finite element." Computer Methods in Applied Mechanics and Engineering 115, no. 1-2 (1994): 125–44. http://dx.doi.org/10.1016/0045-7825(94)90191-0.

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Biryuk, Andrey, Mikhail Drobotenko, Igor Ryadchikov, and Alexander Svidlov. "Optimal Gyrodine Rotor Shape in the Class of Conical Bodies." Mathematical Physics and Computer Simulation, no. 4 (February 2021): 69–81. http://dx.doi.org/10.15688/mpcm.jvolsu.2020.4.7.

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The problem is to find the optimal shape of the gyrodine rotor and its angular rotation speed that maximizes the angular momentum relative to the axis of rotation at a fixed radius, mass and material of the rotor, taking into account the final strength of the material. The gyrodine rotor is a body of revolution, the thickness of which depends only on the distance r to the axis of rotation, r ∈ [0,R], where R is the radius of the rotor. The rotor surface is defined by rotating the curves z = ±z(r) around the axis. When the rotor is spinning, it undergoes deformation due to centrifugal forces. N
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Suhina, Tomislav, Saeed Amirjalayer, Sander Woutersen, Daniel Bonn, and Albert M. Brouwer. "Ultrafast dynamics and solvent-dependent deactivation kinetics of BODIPY molecular rotors." Physical Chemistry Chemical Physics 19, no. 30 (2017): 19998–20007. http://dx.doi.org/10.1039/c7cp02037f.

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The fluorescent excited state of a molecular rotor based on the meso-substituted boron-dipyrromethane (BODIPY) core decays rapidly to the ground state via a conical intersection. The fluorescence is strongly increased in viscous solvents, but solvent polarity has only a small effect.
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Sanz-Andrés, Ángel, Santiago Pindado, and Félix Sorribes-Palmer. "Mathematical Analysis of the Effect of Rotor Geometry on Cup Anemometer Response." Scientific World Journal 2014 (2014): 1–23. http://dx.doi.org/10.1155/2014/537813.

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The calibration coefficients of two commercial anemometers equipped with different rotors were studied. The rotor cups had the same conical shape, while the size and distance to the rotation axis varied. The analysis was based on the 2-cup positions analytical model, derived using perturbation methods to include second-order effects such as pressure distribution along the rotating cups and friction. The comparison with the experimental data indicates a nonuniform distribution of aerodynamic forces on the rotating cups, with higher forces closer to the rotating axis. The 2-cup analytical model
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Mohiuddin, M. A., and Y. A. Khulief. "Modal characteristics of cracked rotors using a conical shaft finite element." Computer Methods in Applied Mechanics and Engineering 162, no. 1-4 (1998): 223–47. http://dx.doi.org/10.1016/s0045-7825(97)00345-9.

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Wohlbru¨ck, R. "Stability of a Rotor Whose Cavity Has an Arbitrary Meridian and Is Partially Filled With Fluid." Journal of Vibration and Acoustics 107, no. 4 (1985): 440–45. http://dx.doi.org/10.1115/1.3269285.

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The stability of an elastically supported rotor spinning with constant angular velocity is studied. The rotor has a cavity of arbitrary meridian and is partially filled with an ideal fluid. The motions of the system are governed by linearized equilibrium conditions for the rotor and field equations as well as boundary conditions for the fluid. Due to the arbitrary shape of the meridian, it is not possible to solve the boundary value problem in closed form. Therefore a variational expression is developed which satisfies the boundary conditions naturally. The variational problem is solved approx
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Стаценко, В. В., О. П. Бурмістенков та Т. Я. Біла. "ВПЛИВ КОНСТРУКЦІЙ ВІДЦЕНТРОВИХ ЗМІШУВАЧІВ НА ЇХ ЗГЛАДЖУВАЛЬНУ ЗДАТНІСТЬ". Bulletin of the Kyiv National University of Technologies and Design. Technical Science Series 142, № 1 (2020): 11–18. http://dx.doi.org/10.30857/1813-6796.2020.1.1.

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Studying the influence of continuous centrifugal mixers design features on their smoothing ability. The methods used are discrete elements, mathematical modeling and regression analysis. The paper considers five continuous centrifugal mixers designs with conical and parabolic rotors. The mixers design features are determined, allowing to change their smoothing ability. Mathematical models of the bulk materials particles movement inside each mixer have been developed based on the discrete element method. The considered mixers reaction to a step change of the key component amount is investigated
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Dissertations / Theses on the topic "Conical rotors"

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Hufenbach, W., M. Gude, B. Zhou, and L. Kroll. "Stress and failure analysis of thick-walled conical composite rotors." Sage, 2004. https://publish.fid-move.qucosa.de/id/qucosa%3A38442.

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The high specific strength and stiffness of composite materials, as well as the possibility of creating a load-adapted property profile of them are ideally suited for the design of high-speed lightweight rotors. With respect to a load-adapted reinforcement structure of composite rotors, the rotor geometry has a significant influence on the optimum fibre orientation. In the case of conical rotors—the structural behaviour is strongly influenced by centrifugally induced bending effects in the rotor structure, which cause complex three-dimensional stress states in combination with the ordinary tan
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Ogrodnik, Peter Jan. "Operation of rotor-bearing systems subject to dynamic conical misalignment." Thesis, Open University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330280.

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Kascak, Peter Eugene. "Fully Levitated Rotor Magnetically Suspended by Two Pole-Pair Separated Conical Motors." Case Western Reserve University School of Graduate Studies / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=case1278530250.

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Storozhev, Dmitry Leonidovich. "Smart Rotating Machines for Structural Health Monitoring." Cleveland State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=csu1262724991.

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Tang, Kou-Yu, and 湯國裕. "Conical Shaft Elements for Rotor Dynamic Analysis." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/41376633043294729027.

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碩士<br>元智大學<br>機械工程研究所<br>88<br>Two conic shaft element models for rotordynamic analysis were proposed in this thesis. The close form solutions from the Bernoulli-Euler beam and Timoshenko beam theories are used as shape functions to construct the element matrices. The conic shaft elements contain transverse inertia, rotary inertia, gyroscopic, bending, and shear effects. Correct shear shape factors are used to find accurate natural frequencies for hollow conic rotors. Comparison for various conic rotor models which use different shape functions was conducted. The results show the proposed
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Wu, Jun-De, and 吳俊德. "A Hollow Conical Beam Finite Element for Rotor Dymanics Analysis." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/48775392147103513959.

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碩士<br>國立中央大學<br>機械工程學系<br>84<br>The article is proposed to derive a hollow conical beam finite element formulation especially for large rotor. The shape functions are obtained from the homogeneous solution of the governing equation neglecting dynamic effects. Four illustrative examples demonstrate the performance of this element, and allow comparisons of results with those obtained by elements derived from Greenhill, Bickford and Nelson''s formulations based on polynomial sha
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Chu, Hong-Sin, and 朱弘信. "Finite Element Formulation of a Conical Beam for Rotor Dynamics Analysis." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/63090402762075812537.

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碩士<br>國立中央大學<br>機械工程研究所<br>83<br>A conical beam finite element formulation is developed for rotor dynamics analysis. The shape functions are obtained from the homogeneous solution of the governing equations for static deflections. Four illustrative examples demonstrate the performance of this element, and allow comparisons of results with those obtained by elements based on different formulations. The superior rate of convergence of whirl speed make this formulation suited for use in rotor
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Books on the topic "Conical rotors"

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Kost, Friedrich. Langswirbelentstehung in einem Turbinenlaufrad mit konischen Seitenwanden. DLR, 1993.

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Book chapters on the topic "Conical rotors"

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Lazarevic, D. B., V. Stoiljkovic, and M. R. Radovanovic. "Determining the Components Forces by Rotary Drawing of Conical Parts." In Advanced Manufacturing Systems and Technology. Springer Vienna, 1996. http://dx.doi.org/10.1007/978-3-7091-2678-3_44.

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Jeon, Han-Wook, and Chong-Won Lee. "Eigenvalue Assignment for Stabilizing Unstable Conical Modes of Rigid Rotor-Active Magnetic Bearing System Over High Rotational Speed Range." In Proceedings of the 9th IFToMM International Conference on Rotor Dynamics. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-06590-8_119.

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Murakami, Chikara, and Ichiju Satoh. "A Suppression Method of Conical Motion of an Axi-Symmetrical Spinning Rigid Rotor Suspended by Magnetic Bearings." In Magnetic Bearings. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-51724-2_29.

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Ogrodnik, P. J., M. J. Goodwin, and J. E. T. Penny. "The Effect of Translational and Conical Bearing Misalignment on the Response and Stability of a Non-Linear Rotor Bearing System." In Vibration and Wear in High Speed Rotating Machinery. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-1914-3_31.

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Darlow, Mark S., and Thomas J. Bievenue. "The FEM Development of a General, Hollow Conical Shaft Element for Use in Transfer Matrix Analysis of Rotor-Bearing Systems Part I: Formulation of the Model." In Rotordynamics ’92. Springer London, 1992. http://dx.doi.org/10.1007/978-1-4471-1979-1_21.

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Darlow, Mark S., and Thomas J. Bievenue. "The FEM Development of a General, Hollow Conical Shaft Element for Use in Transfer Matrix Analysis of Rotor-Bearing Systems Part II: Analysis Results and Experimental Correlation." In Rotordynamics ’92. Springer London, 1992. http://dx.doi.org/10.1007/978-1-4471-1979-1_22.

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Conference papers on the topic "Conical rotors"

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Kim, Daejong, An Sung Lee, and Bum Seog Choi. "Evaluation of Foil Bearing Performance and Nonlinear Rotordynamics of 120kW Oil-Free Gas Turbine Generator." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95800.

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This paper presents design approach of air foil bearings (AFBs) for 120kWe gas turbine generator, which is a single spool configuration with gas generator turbine and alternator rotor connected by a diaphragm coupling. Total four radial AFBs support the two rotors, and one set of double acting thrust foil bearing is located inside the gas generator turbine. The rotor configuration results in eight degree of freedom (DOF) rotordynamic motions, which are two cylindrical modes and two conical modes from the two rotors. Stiffness of bump foils of candidate AFB was estimated from measured structura
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Iseli, Elia, and Jürg Schiffmann. "Stability and Unbalance Analysis of Rigid Rotors Supported by Spiral Groove Bearings: Comparison of Different Approaches." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59513.

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Abstract The dynamic behavior of spiral-grooved gas bearing supported 4DoF rotors is investigated by means of linearized bearing force coefficients and full time-integrated transient analysis. The transient method consists of a state-space representation, which couples the equations of motion with the compressible thin film fluid equation. The linearized method is based on the perturbation analysis around a given eccentric shaft position ε, allowing to compute the static and linear dynamic bearing force coefficients at different excitation frequencies. The two methods are compared for a variat
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Katyayn, Arvind, and Praveen Kumar Agarwal. "Type-2 fuzzy logic controller for conical AMB-rotor system." In 2017 4th International Conference on Power, Control & Embedded Systems (ICPCES). IEEE, 2017. http://dx.doi.org/10.1109/icpces.2017.8117616.

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Mukhametshin, Ilshat, Ayrat Valiev, Farzutdin Muhamadyarov, Marat Kalimullin, and Fanis Yarullin. "Kinematic analysis of conical rotary subsoil loosener for tillage." In 19th International Scientific Conference Engineering for Rural Development. Latvia University of Life Sciences and Technologies, Faculty of Engineering, 2020. http://dx.doi.org/10.22616/erdev.2020.19.tf553.

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Liu, Wanhui, Daejong Kim, and Kai Feng. "Effect of Axial Force on Rotordynamics of a Rigid Rotor Supported by Foil Bearings." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76261.

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This paper investigates the effect of gas foil thrust bearing (GFTB) on the rotordynamic performance of the rotor-gas foil bearing (GFB) system. A rigid rotor supported on two gas foil journal bearings (GFJB) and a pair of GFTBs is studied using a five degree of freedom (5-DOF) model. The studies were performed in both frequency domain using excitation frequency-dependent bearing coefficients (modal analyses) and non-linear analyses (time domain orbit simulations). Modal analyses were performed for both symmetrically and asymmetrically supported rotor systems. For the symmetric rotor, the moda
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Chen, Changping, and Liming Dai. "The Nonlinear Internal Resonance Analysis of a Rotary Truncated Conical Shell." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13775.

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Truncated conical shell is an important structure that has been widely applied in many engineering fields. The present paper studies the internal dynamic properties of a truncated rotary conical shell with considerations of intercoupling the high and low order modals by utilizing Harmonic Balance Method. To disclosure the detailed intercoupling characteristics of high order modal and low order modal of the system, a truncated shallow shell is studied and the internal response properties of the system is investigated by using the Multiple Scale Method. Abundant dynamic characteristics are found
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Roggia, Sara, Gaetano Roggia, Cupetino Francesco, and Michael Galea. "Rotor configuration comparison for the design of a PM conical machine." In 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2019. http://dx.doi.org/10.1109/ecce.2019.8912492.

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De Santiago, Oscar, and Luis San Andrés. "Dynamic Response of a Rotor-Integral Squeeze Film Damper to Couple Imbalances." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0388.

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Squeeze film dampers (SFDs) are used in high speed rotating machinery to reduce rotor vibration amplitudes and to isolate transmitted loads through the bearing support structures. SFDs are also effective means to ameliorate destructive subsynchronous vibrations excited by hydrodynamic bearings, seals, impellers and other unknown sources. Modern jet engines demand lighter and flexible structures with compact components to obtain the largest power to weight ratios. This current trend makes evident rotordynamic phenomena that must be adequately addressed by dissipation elements such as SFDs. Inte
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Kascak, Peter, Ralph Jansen, Timothy Dever, Aleksandr Nagorny, and Dr Kenneth Loparo. "Bearingless Five-Axis Rotor Levitation with Two Pole Pair Separated Conical Motors." In 2009 IEEE Industry Applications Society Annual Meeting. IEEE, 2009. http://dx.doi.org/10.1109/ias.2009.5324866.

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Chai, F., K. Zhao, Z. Li, and L. Gan. "Flux weakening performance of permanent magnet synchronous motors with a conical rotor." In 2017 IEEE International Magnetics Conference (INTERMAG). IEEE, 2017. http://dx.doi.org/10.1109/intmag.2017.8007840.

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