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Journal articles on the topic 'Radial forces'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 May 2022

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1

Masi, Marco. "On compressive radial tidal forces." American Journal of Physics 75, no. 2 (2007): 116–24. http://dx.doi.org/10.1119/1.2366736.

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2

Alsaeed, A., G. Kirk, and S. Bashmal. "Effects of radial aerodynamic forces on rotor-bearing dynamics of high-speed turbochargers." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 14 (2014): 2503–19. http://dx.doi.org/10.1177/0954406214520817.

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This study investigates the radial aerodynamic forces that may develop inside the centrifugal compressor and the turbine volutes due to pressure variation of the circulating gas. The forces are numerically predicted for magnitudes, directions, and locations. The radial aerodynamic forces are numerically simulated as static forces in the turbocharger finite element model with floating ring bearings and solved for nonlinear time-transient response. The numerical predictions of the radial aerodynamic forces are computed with correlation to earlier experimental results of the same turbocharger. Th

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3

Tchaban, Vasyl. "Radial component of vortex electric field force." Computational Problems of Electrical Engineering 11, no. 1 (2021): 32–35. http://dx.doi.org/10.23939/jcpee2021.01.032.

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he differential equations of motion of electrically charged bodies in an uneven vortex electric field at all possible range of velocities are obtained in the article. In the force interaction, in addition to the two components – the Coulomb and Lorentz forces – the third component of a hitherto unknown force is involved. This component turned out to play a crucial role in the dynamics of movement. The equations are written in the usual 3D Euclidean space and physical time.This takes into account the finite speed of electric field propagation and the law of electric charge conservation. On this

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4

Guelich, J., W. Jud, and S. F. Hughes. "Review of Parameters Influencing Hydraulic Forces on Centrifugal Impellers." Proceedings of the Institution of Mechanical Engineers, Part A: Power and Process Engineering 201, no. 3 (1987): 163–74. http://dx.doi.org/10.1243/pime_proc_1987_201_021_02.

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Both radial and axial hydraulic forces act on the impeller of a centrifugal pump. The radial forces are due to three different mechanisms: (a) radial thrust due to non-uniform pressure distribution around the impeller, (b) labyrinth forces and (c) impeller-diffuser interaction forces. The nature, size and origin of these forces are discussed. Steady radial thrust depends on the specific speed of the pump, type of casing (single or double volute, diffuser), geometric parameters and operation conditions including cavitation. The impact of these factors on radial loads is demonstrated and quantit

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5

Badalamenti, J. M., and G. R. Doyle. "Radial-Interradial Spring Tire Models." Journal of Vibration and Acoustics 110, no. 1 (1988): 70–75. http://dx.doi.org/10.1115/1.3269483.

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Two radial-interradial spring tire models are developed to predict vertical and drag forces produced by a tire as it rolls over an obstacle. Interradial springs are used to interconnect radial linear or quadratic springs to make each tire element’s deflection dependent upon its adjacent element’s deflections. Forces predicted by these two models are compared with a previously developed quadratic radial spring tire model and test data. The newly developed quadratic radial-linear interradial spring tire model predicts vertical and drag forces that are in close agreement with the test data.

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6

Cui, Baoling, Xiaodi Li, Kun Rao, Xiaoqi Jia, and Xiaolin Nie. "Analysis of unsteady radial forces of multistage centrifugal pump with double volute." Engineering Computations 35, no. 3 (2018): 1500–1511. http://dx.doi.org/10.1108/ec-12-2016-0445.

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Purpose Radial vibration of horizontal centrifugal pump has a close association with radial exciting forces. The purpose of this paper is to analyze the unsteady radial force in multistage centrifugal pump with double volute in detail and investigate the relevance of static pressure, radial force and radial vibration. Design/methodology/approach The unsteady numerical simulation with realizable k-ε turbulence model was carried out for a multistage centrifugal pump with double volute using computational fluid dynamics codes Fluent. The performance tests were conducted by use of a closed loop sy

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7

Horiuchi, Osamu, Masami Masuda, and Takayuki Shibata. "Bending of Drill and Radial Forces in Micro Drilling." Advanced Materials Research 797 (September 2013): 642–48. http://dx.doi.org/10.4028/www.scientific.net/amr.797.642.

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This paper describes theoretical analysis of bending deflection and anisotropic rigidity of drill, and the induced radial forces in micro drilling. The main results obtained are as follows. (1) There are two different modes of drilling which cause bending deflection of drill and induce radial forces. They are position error mode and run-out mode. (2) The radial forces induced behave quite differently between the two modes. (3) The radial forces increases as the depth of hole increases, because the rigidity of drill beam increases. (4) The position error mode induces a cyclic stress in the dril

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8

Shi, Feng Xia, Jun Hu Yang, and Xiao Hui Wang. "Numerical Prediction of Radial Force in Hydraulic Turbine Based on Fluent." Advanced Materials Research 716 (July 2013): 717–20. http://dx.doi.org/10.4028/www.scientific.net/amr.716.717.

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Two centrifugal pumps in reversal were selected as hydraulic turbines, one of which was equipped with a guide vane. Flow performance was simulated by Fluent. Radial forces of hydraulic turbine in different conditions were predicted. It was shown: when pumps in reversal were used as turbines, The radial forces were produced by the uneven dispersion of pressure in runner inlet. The radial forces increased with the increasing of discharge. Equipped with a guide vane, The inlet pressure in hydraulic turbine runner distributed more uniform than before, and the radial forces were reduced. No guide v

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9

Martsynkovskyy, Volodymyr, Oleksii Zhulov, and Czeslaw Kundera. "Analysis of the Radial-Axial Oscillations of the Rotor of a High-Speed Pump." Applied Mechanics and Materials 630 (September 2014): 341–49. http://dx.doi.org/10.4028/www.scientific.net/amm.630.341.

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The joint radial-axial oscilations of onemass model of rotor of high-speed pump are considered taking into account hydrodynamic forces, arising up in the radial clearance of annular seals. Connection of axial oscilations with radial is conditioned by dependence of conductivity of annular throttle, consequently, and axial force of balancing device, from the excentricity of shaft in the annular collar. amplitude and phase frequency characteristics of the forced oscilations, excited by harmonically changing pressure and static unbalance.

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10

Wileman, J., and I. Green. "The Rotor Dynamic Coefficients of Eccentric Mechanical Face Seals." Journal of Tribology 118, no. 1 (1996): 215–24. http://dx.doi.org/10.1115/1.2837081.

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The Reynolds equation is extended to include the effects of radial deflection in a seal with two flexibly mounted rotors. The resulting pressures are used to obtain the forces and moments introduced in the axial and angular modes by the inclusion of eccentricity in the analysis. The rotor dynamic coefficients relating the forces and moments in these modes to the axial and angular deflection are shown to be the same as those presented in the literature for the concentric case. Additional coefficients are obtained to express the dependence of these forces and moments upon the radial deflections

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11

Lehman, Katherine R., W. Gary Allread, P. Lawrence Wright, and William S. Marras. "Quantification of Hand Grip Force under Dynamic Conditions." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 37, no. 10 (1993): 715–19. http://dx.doi.org/10.1177/154193129303701015.

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A laboratory experiment was conducted to determine whether grip force capabilities are lower when the wrist is moved than in a static position. The purpose was to determine the wrist velocity levels and wrist postures that had the most significant effect on grip force. Maximum grip forces of five male and five female subjects were determined under both static and dynamic conditions. The dominant wrist of each subject was secured to a CYBEX II dynamometer and grip force was collected during isokinetic wrist deviations for four directions of motion (flexion to extension, extension to flexion, ra

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12

Shi, Yan, Junxiong Hu, and Weihua Ma. "Study on the Characteristics of Traction Forces Difference Asymmetric Steering Bogies." Shock and Vibration 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/7230326.

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This article comes up with a new concept of applying the difference between traction forces on front and rear wheelsets to guiding control, as well as the design of a new type of structurally simple asymmetrical radial bogies, which lead to the proposition of traction forces difference-steering asymmetric radial bogies. The traction forces difference-steering asymmetric radial bogies are referred to as TFDA-bogies, in which the difference of longitudinal creep forces between front and rear wheels produces radial steering of both wheelsets. The concept of traction difference is incorporated int

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13

Gupta, Khagendra, O. Burak Ozdoganlar, Shiv G. Kapoor, and Richard E. DeVor. "Modeling and Prediction of Hole Profile in Drilling, Part 1: Modeling Drill Dynamics in the Presence of Drill Alignment Errors." Journal of Manufacturing Science and Engineering 125, no. 1 (2003): 6–13. http://dx.doi.org/10.1115/1.1536932.

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A dynamic deflection model that incorporates the effect of the alignment errors that arise when a drill is held in the spindle assembly has been developed. The drill is modeled as an Euler-Bernoulli beam with clamped-free end conditions. Thrust and radial forces were applied at the free end of the beam. The mechanistic model used to predict these forces has been enhanced to incorporate the effect of the alignment errors and drill vibrations. A method has been outlined to measure these alignment errors. The mechanistic model demonstrates the ability to predict the drill vibrations and the radia

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14

SNOWHILL, PATRICK B., JOHN L. NOSHER, RANDALL L. SIEGEL, and FREDERICK H. SILVER. "Characterization of Radial Forces in Z Stents." Investigative Radiology 36, no. 9 (2001): 521–30. http://dx.doi.org/10.1097/00004424-200109000-00004.

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15

Saunders, C. P. R., and C. C. Zhang. "Rime density, radial forces and atmospheric electricity." Atmospheric Research 21, no. 2 (1987): 101–11. http://dx.doi.org/10.1016/0169-8095(87)90001-9.

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16

Ge, Ying Fei, Jiu Hua Xu, and Yu Can Fu. "Cutting Forces when High-Speed Milling of SiC_P/Al Composites." Advanced Materials Research 308-310 (August 2011): 871–76. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.871.

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High speed milling tests were performed on the SiCp/2009Al composites to investigate the cutting forces by using PCD tools in the speed range of 600-1200m/min. The results showed that the peak value of the cutting force Fy (in the tool radial direction) was in the range of 700-1450N under the present cutting condition. The maximum amplitude of cutting force vibration in the tool radial direction can reach 700N. Cutting forces increased with increasing feed rate or radial depth of cut and decreased with increasing cutting speed. Negative rake angle and relatively large tool nose radius were rec

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17

Zhu, Rong Sheng, Xiu Li Wang, Yun Long, Zhi Jun Yu, and Qiang Fu. "Transient Dynamic Characteristics Study on Reactor Coolant Pump in Variable Working Conditions." Advanced Materials Research 601 (December 2012): 258–64. http://dx.doi.org/10.4028/www.scientific.net/amr.601.258.

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For the study of the transient hydraulic characteristics and internal flow mechanism of the reactor coolant pump from designed conditions to off-designed conditions, using CFX software to simulate the variable flow transient characteristics of reactor coolant pump impeller passageway. The results show that: during the flow transition, the radial force of the impeller doesn’t rotate around the coordinates origin, but rotates around some point in the fourth quadrant, and radial forces of the guide vanes mainly distributes in the first and second quadrant, and radial forces of the volute complete

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18

Quillin, K. J. "Ontogenetic scaling of burrowing forces in the earthworm Lumbricus terrestris." Journal of Experimental Biology 203, no. 18 (2000): 2757–70. http://dx.doi.org/10.1242/jeb.203.18.2757.

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In hydrostatic skeletons, it is the internal fluid under pressure surrounded by a body wall in tension (rather than a rigid lever) that enables the stiffening of the organism, the antagonism of muscles and the transmission of force from the muscles to the environment. This study examined the ontogenetic effects of body size on force production by an organism supported with a hydrostatic skeleton. The earthworm Lumbricus terrestris burrows by forcefully enlarging crevices in the soil. I built a force-measuring apparatus that measured the radial forces as earthworms of different sizes crawled th

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19

Shangguan, Ming Zhu, Hui Juan Liu, Xin Xiao Song, and Hong Lin Lv. "Radial Force Analysis of Radial Laminated Magnetic-Barrier Rotor Brushless Doubly-Fed Machine." Advanced Materials Research 171-172 (December 2010): 454–57. http://dx.doi.org/10.4028/www.scientific.net/amr.171-172.454.

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In this paper, the respective harmonic magnetic field generated by the two sets of stator windings of radial laminated magnetic-barrier rotor brushless doubly-fed machine has been analyzed with the winding function method, the calculations of the radial forces on stator’s inner edge which are resulted from the fundamental and harmonic magnetic field that generated by the two sets of stator windings have been made, and the radial forces of three kinds of such machines with different rotor pole numbers have been compared, all the above can provide theoretical guidance for optimized design of rad

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20

Kluyskens, Virginie, Joachim Van Verdeghem, and Bruno Dehez. "Experimental Investigations on Self-Bearing Motors with Combined Torque and Electrodynamic Bearing Windings." Actuators 8, no. 2 (2019): 48. http://dx.doi.org/10.3390/act8020048.

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The centering guidance forces in self-bearing permanent magnet motors are magnetically integrated with the torque generation windings, and can take place in a single multifunction winding. This radial guidance is usually actively controlled as a function of the rotor position, with the drawbacks associated to actively controlled devices. This article describes how multifunction windings can passively generate electrodynamic centering forces without the need for specific additional electronics, and simultaneously a driving torque if fed by a power supply. It shows the experimental electromotive

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21

Li, Shenlong, and Shuhan Zhou. "A Dynamic Investigation of the Impact Failure Analysis of the Friction Plate in a Planetary Transmission System." International Journal of Acoustics and Vibration 25, no. 4 (2020): 577–86. http://dx.doi.org/10.20855/ijav.2020.25.41716.

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A clear understanding of both vibrations and the impact forces of planetary transmission systems is very helpful for decreasing impact failures of their friction discs and preventing serious accidents of the system. This study presents a multibody dynamic (MBD) investigation based on a commercial MBD software to predict the vibrations and impact forces of the friction disc in a planetary transmission system. In the MBD model, the radial clearance of the planet bearing is formulated, as well as the backlash between the outer gear teeth of the ring and friction disc teeth. However, the previous

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22

Kaneda, Masako, Masayuki Sanada, Sigeo Morimoto, Yoji Takeda, and Hiroyuki Yamai. "Torque and Radial Forces of Switched Reluctance Motor." IEEJ Transactions on Industry Applications 120, no. 1 (2000): 67–72. http://dx.doi.org/10.1541/ieejias.120.67.

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23

Tan, Yu Long, Qiang Wang, Shuang Hui Han, and Fang He. "Development of Radial-Axial Ring Rolling Experimental Equipment and Calculation of Ring Rolling Forces." Advanced Materials Research 652-654 (January 2013): 1980–83. http://dx.doi.org/10.4028/www.scientific.net/amr.652-654.1980.

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By referring to the heavy duty radial-axial ring rolling mill in production, a radial-axial ring rolling experimental equipment was designed and developed. Based on the principle of similarity, the mathematical relationship and calculation method between experimental rolling forces and actual ones in the process of radial-axial ring rolling were established. This experimental equipment has many advantages, such as compact structures, full functions, small deformation and more safety and reliability, which can be used in experimental study and calculation of ring rolling forces.

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24

Kim, Sung Yong. "Quality Assessment Techniques Applied to Surface Radial Velocity Maps Obtained from High-Frequency Radars." Journal of Atmospheric and Oceanic Technology 32, no. 10 (2015): 1915–27. http://dx.doi.org/10.1175/jtech-d-14-00207.1.

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AbstractThis paper presents examples of the data quality assessment of surface radial velocity maps obtained from shore-based single and multiple high-frequency radars (HFRs) using statistical and dynamical approaches in a hindcast mode. Since a single radial velocity map contains partial information regarding a true current field, archived radial velocity data embed geophysical signals, such as tides, wind stress, and near-inertial and low-frequency variance. The spatial consistency of the geophysical signals and their dynamic relationships with driving forces are used to conduct the quality

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25

Zheng, Han Bo, Jin Hua Han, Wei Wang, Xiao Gang Li, and Yu Quan Li. "Computation of Radial Electromagnetic Forces on Power Transformer LV Windings due to Short-Circuit Currents." Advanced Materials Research 732-733 (August 2013): 1069–73. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.1069.

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The short-circuit electromagnetic force in radial direction induces critical mechanical stress on a power transformer. In this paper, the radial short-circuit forces which are exerted on transformer low voltage (LV) windings are investigated. Firstly, the mechanisms of leakage flux and short-circuit electromechanical forces in transformer coils are analyzed. Afterwards, based on IEC standards followed by short-circuit tests, calculations of radial short-circuit forces and evaluations of the ability to withstand short currents in LV windings are developed. The case studies and comparisons with

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26

Lima, Haroldo C. D., and Luís C. B. Crispino. "Tidal forces in the charged Hayward black hole spacetime." International Journal of Modern Physics D 29, no. 11 (2020): 2041014. http://dx.doi.org/10.1142/s021827182041014x.

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Tidal forces produced by black holes are an important result of General Relativity related to the spacetime curvature tensor. Among the astrophysical implications of tidal forces, the tidal disruption events stand out. We analyze the tidal forces in the spacetime of an electrically charged Hayward regular black hole, obtaining the components of the tidal tensor and the geodesic deviation equation. We find that the radial and angular tidal forces may vanish and change sign unlike in the Schwarzschild spacetime. We note that tidal forces are finite at the origin of the radial coordinate in this

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27

Bulten, Norbert W. H., and Bart P. M. van Esch. "Fully Transient CFD Analyses of Waterjet Pumps." Marine Technology and SNAME News 44, no. 03 (2007): 185–93. http://dx.doi.org/10.5957/mt1.2007.44.3.185.

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This paper presents results of fully transient calculations of flow through waterjet pumps. The fully transient method is based on a moving mesh option to implement the rotation of the impeller. In this way, the time-dependent forces acting on the impeller can be determined. These forces can be divided into axial and radial forces, for example, as a result of rotor-stator interaction. In waterjet applications, the nonuniform inflow velocity distribution creates an additional radial impeller force that is steady in the inertial frame of reference. Computational fluid dynamics (CFD) analyses are

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28

González, José, Jorge Parrondo, Carlos Santolaria, and Eduardo Blanco. "Steady and Unsteady Radial Forces for a Centrifugal Pump With Impeller to Tongue Gap Variation." Journal of Fluids Engineering 128, no. 3 (2005): 454–62. http://dx.doi.org/10.1115/1.2173294.

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Experimental and numerical studies are presented on the steady and unsteady radial forces produced in a single volute vaneless centrifugal pump. Experimentally, the unsteady pressure distributions were obtained using fast response pressure transducers. These measurements were compared with equivalent numerical results from a URANS calculation, using the commercial code FLUENT. Two impellers with different outlet diameters were tested for the same volute, with radial gaps between the blade and tongue of 10.0% and 15.8% of the impeller radius, for the bigger and smaller impeller diameters, respe

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29

Miskovish, R. S., and C. E. Brennen. "Some Unsteady Fluid Forces on Pump Impellers." Journal of Fluids Engineering 114, no. 4 (1992): 632–37. http://dx.doi.org/10.1115/1.2910078.

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Spectral analyses of all the forces and moments acting on a typical centrifugal pump impeller/volute combination are presented. These exhibit shaft frequencies, blade passing frequencies, and beat frequencies associated with a whirl motion imposed on the shaft in order to measure rotordynamic forces. Among other features the unsteady thrust was found to contain a surprisingly large blade passing harmonic. While previous studies have explored the magnitudes of the steady fluid-induced radial forces and the fluid-induced rotordynamic forces for this typical centrifugal pump impeller/volute combi

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30

Cates, Robert, Jeffrey Brault, and Sanjeev Kakar. "Botox and Thumb MCP Radial Collateral Ligament Reconstruction." Journal of Wrist Surgery 07, no. 02 (2017): 156–59. http://dx.doi.org/10.1055/s-0037-1604396.

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Background We report the use of botulinum toxin to aid in the treatment of chronic radial collateral ligament insufficiency of the thumb. Case Description Treatment included autograft tendon reconstruction and cast immobilization. Six weeks postoperatively, prior to hand therapy, the patient underwent an ultrasound-guided botulinum neurotoxin A injection into the adductor pollicis muscle to negate its deforming forces on the reconstruction. The patient made an excellent recovery and 1 year postoperatively was pain free and had a stable radial collateral ligament (RCL) upon examination. Literat

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31

Campomanes, Marc L., and Yusuf Altintas. "An Improved Time Domain Simulation for Dynamic Milling at Small Radial Immersions." Journal of Manufacturing Science and Engineering 125, no. 3 (2003): 416–22. http://dx.doi.org/10.1115/1.1580852.

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This paper presents an improved milling time domain model to simulate vibratory cutting conditions at very small radial widths of cut. The improved kinematics model allows simulation of very small radial immersions. The model can predict forces, surface finish, and chatter stability, accurately accounting for non-linear effects that are difficult to model analytically. The discretized cutter and workpiece kinematics and dynamic models are used to represent the exact trochoidal motion of the cutter, and to investigate the effects of forced vibrations and changing radial immersion due to deflect

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32

Berkmortel, Carolyn J., Michael S. Gladwell, Jennifer Ng, et al. "Effect of Radial Neck Length on Joint Loading." Journal of Shoulder and Elbow Arthroplasty 3 (January 2019): 247154921982996. http://dx.doi.org/10.1177/2471549219829964.

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Introduction: Load transfer across the radiocapitellar joint of the elbow is poorly understood both in the setting of the native radial head and following radial head arthroplasty. The purpose of this in vitro study was to determine the effects of radial neck length, arm position, and lateral collateral ligament (LCL) repair on radial load.Methods: A uniaxial load cell was implanted into the radial neck of 8 cadaveric specimens that were mounted on an in vitro motion-control simulator and tested (in dependent, varus, and valgus arm orientations) with the native radial neck length and then −4 t

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33

Zhang, Hong-li, Fan-yu Kong, Ai-xia Zhu, Fei Zhao, and Zhen-fa Xu. "Effect of Blade Outlet Angle on Radial Force of Marine Magnetic Drive Pump." Shock and Vibration 2020 (September 11, 2020): 1–18. http://dx.doi.org/10.1155/2020/8827333.

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To research the effects of the blade outlet angle on the performance and the radial force of the marine pump, the unsteady numerical simulation of the four different models is carried out. The radial forces on the impeller and the blades are obtained under different flow rate conditions. The time and frequency domain characteristics of radial resultant force on the impeller and the blades are analyzed and those of the impeller torque are researched. The results show that the radial forces of the impeller and the blades increase with the increase of the blade outlet angle at the same flow rate.

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34

Karaskiewicz, Krzysztof, and Marek Szlaga. "Experimental and Numerical Investigation of Radial Forces Acting on Centrifugal Pump Impeller." Archive of Mechanical Engineering 61, no. 3 (2014): 445–54. http://dx.doi.org/10.2478/meceng-2014-0025.

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Abstract The paper presents the results of measurements and predictions of radial thrust in centrifugal pump with specific speed ns = 26. In the pump tested, a volute with rectangular cross-section was used. The tests were carried out for several rotational speeds, including speeds above and below the nominal one. Commercial code ANSYS Fluent was used for the calculations. Apart from the predictions of the radial force, the calculations of axial thrust were also conducted, and correlation between thrust and the radial force was found. In the range of the measured rotational speeds, similarity

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35

Adkins, D. R., and C. E. Brennen. "Analyses of Hydrodynamic Radial Forces on Centrifugal Pump Impellers." Journal of Fluids Engineering 110, no. 1 (1988): 20–28. http://dx.doi.org/10.1115/1.3243504.

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Hydrodynamic interactions that occur between a centrifugal pump impeller and a volute are experimentally and theoretically investigated. The theoretical analysis considers the inability of the blades to perfectly guide the flow through the impeller, and also includes a quasi-one dimensional treatment of flow in the volute. Flow disturbances at the impeller discharge and the resulting forces are determined by the theoretical model. The model is then extended to obtain the hydrodynamic force perturbations that are caused by the impeller whirling eccentrically in the volute. Under many operating

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36

Jianyong, Liu, Qiao Lihong, and Chen Wuyi. "Cutting force analysis in machining of titanium alloy with solid carbide cutters of different geometriy." MATEC Web of Conferences 179 (2018): 02002. http://dx.doi.org/10.1051/matecconf/201817902002.

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In order to study the cutting force in machining of titanium alloy with solid carbide cutters of different geometriy, variable helix (VH), variable pitch (VP) and standard (SD) milling cutter were used to machine titanium alloy TB6 via dry milling. The influence of cutting parameters and geometric structure parameters of milling cutters on the cutting force was investigated by the analysis of radial and tangential forces in the cutting process with three kinds of milling cutters. The experiment results showed that cutting parameters had the same influence on the radial force and tangential for

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37

Karmel, A. M. "A Study of the Internal Forces in a Variable-Displacement Vane-Pump—Part II: A Parametric Study." Journal of Fluids Engineering 108, no. 2 (1986): 233–37. http://dx.doi.org/10.1115/1.3242568.

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This is the second part of an analytical study of the internal forces in a variable-displacement vane-pump. It presents a parametric study of the forces and torques applied to the mechanism and the shaft of this pump, as functions of line pressure, the eccentricity, and the design geometry. It is shown that the continuous components of the torque and of the direction of the radial shaft-load vary as a sawtooth wave at twice the vane-frequency while the magnitude of the radial shaft-load varies as a square wave at vane-frequency. The design criterion developed in the first part of this study is

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38

Foresti, D., M. Nabavi, and D. Poulikakos. "On the acoustic levitation stability behaviour of spherical and ellipsoidal particles." Journal of Fluid Mechanics 709 (August 31, 2012): 581–92. http://dx.doi.org/10.1017/jfm.2012.350.

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AbstractWe present here an in-depth analysis of particle levitation stability and the role of the radial and axial forces exerted on fixed spherical and ellipsoidal particles levitated in an axisymmetric acoustic levitator, over a wide range of particle sizes and surrounding medium viscosities. We show that the stability behaviour of a levitated particle in an axisymmetric levitator is unequivocally connected to the radial forces: the loss of levitation stability is always due to the change of the radial force sign from positive to negative. It is found that the axial force exerted on a sphere

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39

Huang, Xiuchang, Zhiwei Su, Sen Wang, Xinsheng Wei, Yong Wang, and Hongxing Hua. "High-frequency disturbance force suppression mechanism of a flywheel equipped with a flexible dynamic vibration absorber." Journal of Vibration and Control 26, no. 23-24 (2020): 2113–24. http://dx.doi.org/10.1177/1077546320915340.

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Flywheels generate speed-related disturbances and induce micro-vibrations that influence the performance of high-sensitivity instruments on board. This study addresses dynamic modeling and disturbance force suppression of the flywheels due to its inherent characteristic structural modes. The disturbance force transmission of a rotating flywheel due to a unit radial force applied at the rim of the wheel body is reported using the three-dimensional finite element method and frequency response function–based substructuring method. The characteristic structural modes for the radial and axial distu

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Kreuz-Ihli, T., D. Filsinger, A. Schulz, and S. Wittig. "Numerical and Experimental Study of Unsteady Flow Field and Vibration in Radial Inflow Turbines." Journal of Turbomachinery 122, no. 2 (1999): 247–54. http://dx.doi.org/10.1115/1.555441.

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The blades of turbocharger impellers are exposed to unsteady aerodynamic forces, which cause blade vibrations and may lead to failures. An indispensable requirement for a safe design of radial inflow turbines is a detailed knowledge of the exciting forces. Up to now, only a few investigations relating to unsteady aerodynamic forces in radial turbines have been presented. To give a detailed insight into the complex phenomena, a comprehensive research project was initiated at the Institut fu¨r Thermische Stro¨mungsmaschinen, at the University of Karlsruhe. A turbocharger test rig was installed i

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Guo, Shijie, and Hidenobu Okamoto. "An Experimental Study on the Fluid Forces Induced by Rotor-Stator Interaction in a Centrifugal Pump." International Journal of Rotating Machinery 9, no. 2 (2003): 135–44. http://dx.doi.org/10.1155/s1023621x03000125.

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The pressure fluctuations and the radial fluid forces acting on the impeller, the pressures in the volute, as well as the vibration of the shaft in a centrifugal pump were measured simultaneously, and their relationship was investigated. Experiments were done for various diffuser vanes, flow rates, and rotating speeds. It was demonstrated that both the blade-pressure fluctuations and the volute static pressures are nonuniform circumferentially (not axisymmetrical) under off-design operating conditions and that the two have a strong relationship. At high flow rates, the blade pressure fluctuati

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Brach, K., D. M. Pai, E. Ratterman, and M. C. Shaw. "Grinding Forces and Energy." Journal of Engineering for Industry 110, no. 1 (1988): 25–31. http://dx.doi.org/10.1115/1.3187838.

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Grinding forces and energy play an important role in all abrasive machining operations. While specific grinding energy may be obtained from workpiece dynamometer values or by measuring spindle power, care must be exercised in converting dynamometer reading into power consumed. This is particularly true for operations involving a large ratio of wheel depth of cut to wheel diameter or when the radial force on the wheel is large relative to the tangential component. Interpretation of workpiece dynamometer results are discussed and several specific examples are considered including the diamond saw

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Mezentsev, Oleg A., Rixin Zhu, Richard E. DeVor, Shiv G. Kapoor, and William A. Kline. "Use of radial forces for fault detection in tapping." International Journal of Machine Tools and Manufacture 42, no. 4 (2002): 479–88. http://dx.doi.org/10.1016/s0890-6955(01)00139-0.

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Guseinov, R. V., and M. R. Rustamova. "Internal thread cutting in the presence of radial forces." Russian Engineering Research 29, no. 5 (2009): 480–81. http://dx.doi.org/10.3103/s1068798x09050116.

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Nerubailo, B. V., V. P. Ol'shanskii, and Yu I. Selemeneva. "Cylindrical shell loaded by radial forces around circular regions." Journal of Engineering Physics and Thermophysics 70, no. 5 (1997): 814–19. http://dx.doi.org/10.1007/bf02657644.

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Melnik, V. A. "Calculation of radial forces in smooth shaft slot seals." Chemical and Petroleum Engineering 47, no. 9-10 (2012): 603–8. http://dx.doi.org/10.1007/s10556-012-9517-3.

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Moore, J. J., and M. B. Flathers. "Aerodynamically Induced Radial Forces in a Centrifugal Gas Compressor: Part 1—Experimental Measurement." Journal of Engineering for Gas Turbines and Power 120, no. 2 (1998): 383–90. http://dx.doi.org/10.1115/1.2818134.

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Net radial loading arising from asymmetric pressure fields in the volutes of centrifugal pumps during off-design operation is well known and has been studied extensively. In order to achieve a marked improvement in overall efficiency in centrifugal gas compressors, vaneless volute diffusers are matched to specific impellers to yield improved performance over a wide application envelope. As observed in centrifugal pumps, nonuniform pressure distributions that develop during operation above and below the design flow create static radial loads on the rotor. In order to characterize these radial f

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Nguyen, Nguyen, Bui, Ueno, and Nguyen. "Analysis and Control of Slotless Self-Bearing Motor." Actuators 8, no. 3 (2019): 57. http://dx.doi.org/10.3390/act8030057.

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A self-bearing motor (SBM) is an electric motor with a magnetically integrated bearing function, that is, it can provide levitation and rotation simultaneously as a single actuator. This paper presents the design, operating principle and control system for the slotless self-bearing motor (SSBM). In this design, the stator has no iron core but includes six-phase coils. The rotor consists of a permanent magnet and an enclosed iron yoke. Magnetic forces generated by the interaction between stator currents and the magnetic field of the permanent magnet are used to control the rotational speed and

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Gómez, Iratxo, Gustavo García, Alex McCloskey, and Gaizka Almandoz. "Analytical Model to Calculate Radial Forces in Permanent-Magnet Synchronous Machines." Applied Sciences 11, no. 22 (2021): 10865. http://dx.doi.org/10.3390/app112210865.

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There are three principal sources of noise and vibration in electrical machines: electromagnetic sources, mechanical sources, and aerodynamic sources. Nowadays, one of the major advantages of permanent-magnet synchronous machines is their torque density. This density is achieved through a high magnetic flux density in the air gap, which is achieved through hard magnets. Unfortunately, in these machines, electromagnetic forces have been identified as the main source of vibration and noise, and high magnetic flux densities make these vibrations and noises more significant. With the aim of better

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Czajko, Jakub. "Operationally Complete Work Done Suggests Presence of Extra Potentials Corresponding to Repulsive Forces." International Letters of Chemistry, Physics and Astronomy 37 (August 2014): 16–30. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.37.16.

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Operationally complete representation of work done and the corresponding to it potential energy within the usual radial/center-bound, nonrotating gravitational force fields comprises two extra terms: linear nonradial and angular nonradial, in addition to the usual radial term. Since these nonradial terms have negative signs, they suggest presence of potentials corresponding to repulsive forces generated by the very same, usual radial attractive force field. The extra linear nonradial term depends on exposure of an orbiting satellite to the distribution of mass within the field, whereas the ext

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