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Journal articles on the topic 'Radial rigidity'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Shimizu, Ichiro, Akira Wada, and Makoto Sasaki. "A Study on Designing Balloon Expandable Magnesium Alloy Stent for Optimization of Mechanical Characteristics." Proceedings 2, no. 8 (2018): 523. http://dx.doi.org/10.3390/icem18-05398.

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Recently, the demand for a bio-absorbable coronary stent to promote recovery after an operation has increased. An option for such a stent is one made of a magnesium alloy, which has biodegradable properties. However, magnesium alloys have lower rigidity and lower ductility than other metals; as such, an appropriate stent structure is required to ensure radial rigidity. In this study, design parameters for an AZ31 magnesium alloy stent with sufficient radial rigidity were investigated. The necessary radial rigidity was determined by comparison tests against commercially available stents. The de

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2

Carlson, R., and C. Shubin. "Spectral Rigidity for Radial Schrödinger Operators." Journal of Differential Equations 113, no. 2 (1994): 338–54. http://dx.doi.org/10.1006/jdeq.1994.1127.

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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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4

Wang, Shu Lin, Wei Zhan Zhang, and Wen Hua Chen. "Analysis of Radial Rigidity about the Hydraulic Expansion Toolholder." Advanced Materials Research 381 (November 2011): 76–80. http://dx.doi.org/10.4028/www.scientific.net/amr.381.76.

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Toolholder radial rigidity plays an important role in tool vibration and the quality of machine face. Toolhoder radial rigidity is investigated by the finite element method. The factors such as the fitness between tool and toolhoder, the length of oil chamber bulge, oil pressure and rotation speeds are analyzed in the paper, the results can offer some effectively guidelines and reference for toolhoder machining and processing quality control.

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Li, Jin Tao, Shu Lin Wang, Zhu Feng Li, Yong Hui Yu, and Xue Liang Cheng. "Analysis of Axial Holding Capability about the Lengthened Shrink-Fit Holder and Cutting Tool System." Advanced Materials Research 940 (June 2014): 249–53. http://dx.doi.org/10.4028/www.scientific.net/amr.940.249.

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Lengthened shrink-fit holder is one important part of high speeding tool system. Its gripping rigidity directly affects the quality of the processed parts and machining efficiency. Building the FEA model of axial gripping rigidity about Lengthened shrink-fit holder and Cutting tool system with UG NX to analyze the influence with different interference,speed,gripping length and thickness on axial gripping rigidity. The gripping rigidity is one important parameter of the lengthened shrink-fit holder and cutting tool system, including radial griping rigidity,torsional griping rigidity and axial g

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Minchenya, V. T., A. L. Savchenko, and N. T. Minchenya. "ASSESSMENT OF MECHANICAL CHARACTERISTICS OF VASCULAR ENDO-PROSTHESES." Science & Technique 16, no. 5 (2017): 400–406. http://dx.doi.org/10.21122/2227-1031-2017-16-5-400-406.

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Titanium nickelide (nitinol) is one of prospective materials for production of special endo-prostheses and other parts and characterized with effect of shape memory. A specific feature of vascular endo-prostheses is the necessity to provide the required rigidity within the temperature interval from 15 to 42 оС. It has been established that titanium nickelide is able to provide the required rigidity but it depends on preliminary heat treatment parameters. So, it is important to determine rela-tions between rigidity of titanium nickelide wire and its preliminary heat treatment parameters for the

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SAEKI, Y., H. HASHIZUME, M. NAGOSHI, H. TANAKA, and H. INOUE. "Mechanical Strength of Intramedullary Pinning and Transfragmental Kirschner Wire Fixation for Colles’ Fractures." Journal of Hand Surgery 26, no. 6 (2001): 550–55. http://dx.doi.org/10.1054/jhsb.2001.0646.

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Four methods of distal radius fracture fixation were tested in this experimental biomechanical study of an unstable Colles’ fracture model. Sixty artificial radial bones and seven pairs of cadaveric radii were used. Seven additional pairs of paired cadaveric radial epiphyses were used in separate perforation and cut-out tests. Tests with the artificial bones showed that the rigidity of the four tested fixation methods was comparable, except for proximal intramedullary pinning. The rigidity of the NODE fixation in the cadaveric radii was greater than that of transfragmental pinning. The load at

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Hu, Jin, and Gen Bao Zhang. "Experiments and Study of the Static Rigidity of Workpiece Spindle of Direct-Drive Gear Hobbing Machine." Applied Mechanics and Materials 233 (November 2012): 355–60. http://dx.doi.org/10.4028/www.scientific.net/amm.233.355.

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Static rigidity of workpeice spindle component is a very important index of the rigidity of derict-drive gear hobbing spindle unit. In this study, the static rigidity of workpiece spindle system were analyzed through a finite element method (EFM) by building geometric models and studying the deformation when radial cutting force was imposed. Experiments on workpiece were carried out with and without the assistance of tailstock center separately to measure the changes of the static rigidity of spindle. The results prove a less change of the static rigidity of spindle when with the assistance of

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9

Chen, Zhenya, Zhuoqiang Ma, Xiang Li, Hongbing Miao, Shangjin Yang, and Jian Li. "Deep hole connector design and oil film pressure study." Vibroengineering Procedia 50 (September 21, 2023): 250–56. http://dx.doi.org/10.21595/vp.2023.23379.

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Aiming at the problem of insufficient rigidity of the tool system and unbalanced radial force during deep hole machining, this paper designs a deep hole connector using the fluid dynamic pressure lubrication principle. The deep hole connector includes double-bridge strain gauges and tiltable tiles, which can increase the rigidity of the tool system by using the oil film support stiffness and offset the unbalanced radial force of synchronous detection by adjusting the oil film pressure in real time. First, the mathematical model of tiltable tile is established, the oil film thickness formula is

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10

Itu, Calin, Andreas Öchsner, Sorin Vlase, and Marin I. Marin. "Improved rigidity of composite circular plates through radial ribs." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 233, no. 8 (2018): 1585–93. http://dx.doi.org/10.1177/1464420718768049.

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Engineering practice imposes an increased rigidity of mechanical elements that are parts of machinery or equipment used in practice. Circular plates are such elements, especially used in many common applications, which is why the increase in mechanical properties of circular plates in engineering is connected with the weight optimization problem. The paper makes a study of such a composite plate, proposes and validates a constructive solution capable of increasing the stiffness of this piece. The finite element method is used for the composite panel analysis, and experimental measurements allo

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Popa, Carmen, Veronica Despa, and Florina Violeta Anghelina. "Neutral Surface Position of a Circular Plane Plate with Radial Ribs." Scientific Bulletin of Valahia University - Materials and Mechanics 20, no. 22 (2024): 51–53. http://dx.doi.org/10.2478/bsmm-2024-0010.

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Abstract This paper establishes the neutral surface position of a circular plane plate with radial nervures, considering anisotropic structures theory. The nervures have a constant thickness and linear variable high along the length. At the same time this paper presents the cylindrical flexural rigidity of a such structure. The obtained theoretical data represent a development of a plate study with constant thickness and height nervures, assembled on a single face. The effect of welding on global rigidity of the plate is neglected. A numerical example of such a plate is made.

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12

Liu, Peng, Tao Zeng, Jun Ke Xie, and Fu Ji Qi. "Structural Design and Finite-Element Analysis of Packing Seal with Self-Adaption and Resilience." Applied Mechanics and Materials 624 (August 2014): 272–75. http://dx.doi.org/10.4028/www.scientific.net/amm.624.272.

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For lack of structure rigidity foundation and radial force diminishing exponentially with the distance of gland, a newly packing sealing structure with opening and hollow metal ring supporting is designed. Through finite element analysis, it comes out that the disadvantages are divided adding effect of high pressure resistant. The radial force is increased,preload is reduced, and the mechanical seals can be replaced under certain condition.

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13

Chen, Jun Hui, Feng Yu Yang, Chao Rui Nie, Jun Yang, and Peng Yan Wan. "Magnetic Force Characteristics and Structure of a Novel Radial Hybrid Magnetic Bearing." Applied Mechanics and Materials 150 (January 2012): 69–74. http://dx.doi.org/10.4028/www.scientific.net/amm.150.69.

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There are some problems in the permanent magnetic circuit of the current permanent magnet biased magnetic bearings, such as small magnetic force, low magnetic flux density and lack of self-stabilization. To solve this problem, a new hybrid radial magnetic bearing structure has been proposed. The nonlinear model and linearization equation of the new hybrid radial magnetic bearing capacity has been established by current molecular method and virtual displacement theorem. It is found that the permanent magnetic bearing can achieve self-stabilization in the radial degrees of freedom and can reduce

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14

Nadarajah, C., A. S. Tooth, and J. Spence. "The radial loading of cylindrical vessels—influence of attachment rigidity." International Journal of Pressure Vessels and Piping 67, no. 1 (1996): 65–79. http://dx.doi.org/10.1016/0308-0161(94)00169-3.

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15

Arcostanzo, Marc, and Erwann Delay. "Relative radial mass and rigidity of some warped product manifolds." Differential Geometry and its Applications 27, no. 3 (2009): 368–77. http://dx.doi.org/10.1016/j.difgeo.2008.10.015.

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16

Capo, John T., David Svach, John Ahsgar, Nathaniel S. Orillaza, and Christopher T. Sabatino. "Biomechanical Stability of Different Fixation Constructs for ORIF of Radial Neck Fractures." Orthopedics 31, no. 10 (2008): 1–6. https://doi.org/10.3928/1477447-20110525-16.

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Radial head and neck fractures are common and at times require operative fixation. There is no consensus on the ideal fixation construct for unstable radial neck fractures. Using 7 fresh frozen cadaveric radii, fractures of the radial neck were created 2 cm from the articular surface. The fractures were stabilized with 5 different commonly used constructs: crossed K-wires; a 2.4-mm T-plate using screws in the head (T-plate and nonlocked screw construct); a T-plate using a screw and locked buttress pin in the head (T-plate and locked buttress pin construct); a T-plate with an interfragmentary s

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17

Du, Chun Gui, and Chun De Jin. "A Study on Radial Curtain Plybamboo Form." Applied Mechanics and Materials 26-28 (June 2010): 466–71. http://dx.doi.org/10.4028/www.scientific.net/amm.26-28.466.

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Plybamboo is commonly made using chordwise bamboo strips. Previous studies have indicated that the bamboo utilization rate and the processing efficiency are low in manufacturing chordwise curtain Plybamboo. This paper presents a study on the manufacturing technology of radial curtain plybamboo form. Radial strips cut from bamboo were glued on the radial faces. The results showed: (1) the bamboo utilization rate of radial cutting strips was 15-20% higher than chordwise cutting strips, and the resin consumption was only approximately 50% of chordwise bamboo strips; (2) however, radial bamboo str

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18

Rathinam, Kalidasan, Sandeep Kumar, and Vivek Sharma. "Analytical estimation of diametral error in turning process considering flexible supports." MATEC Web of Conferences 272 (2019): 01054. http://dx.doi.org/10.1051/matecconf/201927201054.

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Turning is a fundamental metal cutting process. Diametral accuracy plays a vital role while turning long and slender workpieces. Hence the estimation of diametral error becomes more important for work pieces generally with slenderness ratio greater than six. The diametral error during the turning process is caused mainly by radial cutting force component and tangential cutting force component. Apart from this, it is also affected by cutting conditions, rigidity of the machine tool and type of support condition of the work piece. The main aim of the present research work is to construct an anal

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19

Abulkhanov, Stanislav Rafaelevich, and Dmitrii Sergeevich Goryainov. "Upgraded Railway Front Searchlight Design Plastic Deformations by its Vibrations with Resonance Frequencies." Key Engineering Materials 684 (February 2016): 111–19. http://dx.doi.org/10.4028/www.scientific.net/kem.684.111.

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Natural frequencies of the four upgraded front searchlight designs were received in ANSYS software environment. In the first case serial front searchlight incandescent electric lamp was replaced by a LED group which was mounted on the one-piece cylinder backing. The second front searchlight design had the backing which was upgraded by a radial ribs and concentric rigidity ferrules. Analyze of the backing deformation character by vibrations with the natural frequencies established a number of design solutions which make it possible to raise front searchlight vibration resistance. By the front s

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20

Havin, Valerij, Borys Kyrkach, Sergij Pogorilov, and Sergij Sherhin. "AN EFFECTIVE MODEL FOR CALCULATING THE NONLINEAR RIGIDITY OF BALL BEARINGS." Bulletin of the National technical university "Kharkiv Polytechnic Institute" Series: Techniques in a machine industry, no. 1(7) (September 20, 2023): 82–93. http://dx.doi.org/10.20998/2079-004x.2023.1(7).10.

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An analysis of the features of the static calculation of the spindle assembly for stiffness, taking into account the stiffness of the supports, was carried out. It is noted that during the static analysis of spindle shafts, approximate reference values of the rigidity of supports - rolling bearings are usually used. which can give an error in estimating the stiffness of the support up to 50%. The paper presents an analysis of the modified Jones-Harris method for calculating the stiffness of bearings, which provides an increase in accuracy due to new constants in the dependencies for the radial

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21

Ishida, Sachiko, Nur Asyikin binti Ahmad, and Koki Oka. "Numerical analysis on rigidity of cylindrical honeycomb cores under radial loads." Journal of Advanced Simulation in Science and Engineering 7, no. 1 (2020): 189–200. http://dx.doi.org/10.15748/jasse.7.189.

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22

MOTOKA, Masayuki, and Shuting LI. "Study on Contact Analysis and Radial Rigidity Measurement of Rolling Bearings." Proceedings of Conference of Chugoku-Shikoku Branch 2019.57 (2019): 406. http://dx.doi.org/10.1299/jsmecs.2019.57.406.

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23

Sawamura, Ryota, Shinya Ikenaga, and Atsushi Matsubara. "Development of Dynamic Loading Device for Rotating Spindle of Machine Tools." Key Engineering Materials 523-524 (November 2012): 544–49. http://dx.doi.org/10.4028/www.scientific.net/kem.523-524.544.

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High performance milling spindles, which have high rigidity and high speed, are required for high productive machining. In order to evaluate the rigidity change of the spindle, authors has been developed a magnetic loading device. This device provides attractive force in radial direction to a dummy tool attached to a spindle. By using this device, the static stiffness of the rotating spindle has been successfully evaluated. However the loading rate could not be controlled due to the electric response lag caused by the magnetic field. To solve this problem, electric response of the coil-tool sy

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24

Tyshkevich, V. N. "Optimization of Flat Grinding Modes for Low Rigidity Workpieces such as Rings and Prismatic Rods." Proceedings of Higher Educational Institutions. Маchine Building, no. 2 (743) (February 2022): 29–37. http://dx.doi.org/10.18698/0536-1044-2022-2-29-37.

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The study introduces an algorithm and method for optimization of flat grinding modes for low-rigidity workpieces such as rings and prismatic rods. The proposed solution ensures the specified quality of the machined surface at the maximum process efficiency. The required flatness tolerance of the machined surface is provided at the second stage of optimization modes by limiting the value of the maximum elastic deformation. The variable parameters are the cutting forces, magnetic field attraction of the machine table, and the bending rigidity of the workpiece. The study introduces mathematical m

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

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The article presents the design of an anti–vibration holder, the use of which in the processing of materials by cutting will reduce the level of self–generated vibrations that occur in tool systems. The advantages of the holder are the simplicity of construction and installation of the damping element; the ability to install various types of cutting heads on the holder. As an example, the possibility of using a holder when boring a hole in a thin–walled part is considered. A fragment of the part drawing and the boring scheme is shown. The influence of processing conditions on the tool deviatio

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Ghiţescu, Marilena, Marius Ghiţescu, and Arina Modrea. "Some Aspects about Theoretical Static Rigidity and Experimental Static Rigidity of a New Elastic Coupling with Cylindical Bolts and Nonmetallic Elements." Acta Marisiensis. Seria Technologica 16, no. 2 (2019): 11–19. http://dx.doi.org/10.2478/amset-2019-0011.

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Abstract The elastic couplings are frequently used in mechanical transmissions design, to take over the radial, axial and angular misalignments and also to take over the shocks and the overloads that could appear. In this paper is presenting some aspects about the construction of couplings with bolts using non-metallic elements, e.g. rubber, having different hardness, the elements involved in torque transmission, in this case elastic elements, having also different dimensions or forms, in the way to have a good elasticity and capacity of vibration absorbtion, determining theoretical static rig

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27

Chen, C. M., H. L. Chang, and J. H. Syu. "Study on advanced assembly characteristics of locking with radial anti-loosening precision locked-nut while maintaining the design rigidity under dynamic precision fastening system." Journal of Physics: Conference Series 2345, no. 1 (2022): 012025. http://dx.doi.org/10.1088/1742-6596/2345/1/012025.

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Abstract The rigidity of the precision fastening system is often reduced due to dynamic vibration after design assembly rigidity. Without an anti-loosening mechanism, it may even be completely loosened in severe cases. It is often used in the advanced assembly of important precision components or important precision transmissions, what is can keep the stable design dynamic rigidity. The relative fixation of the mechanism, due to the reduction of structural rigidity, often leads to problems such as reduced use accuracy, difficulty to grasp the vibration frequency, and reduced service life. In t

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Shevchenko, S., O. Shevchenko, and S. Vynnychuk. "Mathematical Modelling of Dynamic System Rotor-Groove Seals for the Purposes of Increasing the Vibration Reliability of NPP Pumps." Nuclear and Radiation Safety, no. 1(89) (March 19, 2021): 80–87. http://dx.doi.org/10.32918/nrs.2021.1(89).09.

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Groove seals are considered as hydrostatic bearings capable of effectively damping rotor vibrations. In order to determine the dynamic characteristics, a model of the rotor-groove seals system is considered. The radial forces and moments in groove seals had been estimated. Expressions of joint radial-angular rotor vibrations in groove seals had been obtained. Formulas had been proposed for constructing amplitude and phase frequency characteristics. An example of calculating the dynamic characteristics of a centrifugal machine rotor model is presented. The directions of increasing the vibration

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29

ANTONYUK, Vladimir E. "JUSTIFICATION OF FORCE PARAMETERS FOR STABILIZATION OF RING BLANKS OF LOW RIGIDITY." Mechanics of Machines, Mechanisms and Materials 2, no. 67 (2024): 30–35. http://dx.doi.org/10.46864/1995-0470-2024-2-67-30-35.

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The necessity of stabilization of ring blanks of low rigidity is substantiated. For stabilization a 6-position loading scheme with uniformly distributed radial forces is proposed, with the possibility to transform into 3- and 2-position loading schemes. The stress state of the ring under loading by uniformly distributed radial forces is analyzed, and calculation dependences for determining the total stress at 6-, 3- and 2-position loading schemes are proposed. Calculation dependences are offered for determination of force parameters of the device with lever-joint mechanism for creation of stre

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30

Lanteigne, J. "Theoretical Estimation of the Response of Helically Armored Cables to Tension, Torsion, and Bending." Journal of Applied Mechanics 52, no. 2 (1985): 423–32. http://dx.doi.org/10.1115/1.3169064.

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This paper concerns the mechanical behavior of ACSR (aluminum conductor steel-reinforced) conductors under static-loading conditions, which may comprise any combination of tension, torsion, and bending. The model described is quite general and can be applied to other types of helically armored cables. A stiffness matrix is developed and relations are given for axial, torsional, and flexural rigidities and for coupling parameters. For small curvatures, the flexural rigidity is comparable to the upper limit accepted in current practice by ACSR users. As the curvature increases, however, friction

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31

Cavadas, Pedro C. "Secondary Free Fibular Flap for Providing Rigidity in a Radial Forearm Phalloplasty." Plastic and Reconstructive Surgery 122, no. 2 (2008): 101e—102e. http://dx.doi.org/10.1097/prs.0b013e31817d65c8.

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32

Cavallina, Lorenzo. "Stability analysis of the two-phase torsional rigidity near a radial configuration." Applicable Analysis 98, no. 10 (2018): 1889–900. http://dx.doi.org/10.1080/00036811.2018.1478082.

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33

Mizuno, Ichiro, Akira Komiya, Akihiko Watanabe, and Hideki Fuse. "Importance of Axial Penile Rigidity in Objective Evaluation of Erection Quality in Patients with Erectile Dysfunction – Comparison with Radial Rigidity." Urologia Internationalis 84, no. 2 (2010): 194–97. http://dx.doi.org/10.1159/000277598.

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Wang, C., G.-F. Zheng, and X.-F. Xu. "MicroRNA-186 improves fracture healing through activating the bone morphogenetic protein signalling pathway by inhibiting SMAD6 in a mouse model of femoral fracture." Bone & Joint Research 8, no. 11 (2019): 550–62. http://dx.doi.org/10.1302/2046-3758.811.bjr-2018-0251.r1.

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Objectives MicroRNAs (miRNAs) have been reported as key regulators of bone formation, signalling, and repair. Fracture healing is a proliferative physiological process where the body facilitates the repair of a bone fracture. The aim of our study was to explore the effects of microRNA-186 (miR-186) on fracture healing through the bone morphogenetic protein (BMP) signalling pathway by binding to Smad family member 6 (SMAD6) in a mouse model of femoral fracture. Methods Microarray analysis was adopted to identify the regulatory miR of SMAD6. 3D micro-CT was performed to assess the bone volume (B

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Wang, Cong-er, and Pei-hua Zhang. "In Vitro Degradation Behaviours of PDO Monofilament and Its Intravascular Stents with Braided Structure." Autex Research Journal 16, no. 2 (2016): 80–89. http://dx.doi.org/10.1515/aut-2015-0031.

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Abstract Biodegradable intravascular stent has attracted more and more focus in recent years as an effective solution for angiostenosis. Ideal stents were expected to exhibit sufficient radial force to support the vascular wall, while suitable flexibility for the angioplasty. After vascular remodeling, stents should be degraded into small molecular and be eliminated from human body, causing no potential risk. In this paper, poly-p-dioxanone (PDO) monofilament was braided into net structure with four different braiding density, two of which exhibited sufficient radial force larger than 30 kPa,

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Hanada, R., T. Nagumo, and T. Mashita. "Phase Lag of Tire Cornering Force." Tire Science and Technology 17, no. 3 (1989): 184–200. http://dx.doi.org/10.2346/1.2141684.

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Abstract Automobile handling can be greatly improved by reducing the phase lag of tire cornering force behind imposed distortion. We have shown experimentally that this lag is related to in-plane stiffness of the belt and to radial, lateral, and circumferential stiffnesses of the sidewall. While the cornering stiffness is related to the belt rigidity, either can be changed without affecting the sidewall stiffnesses. The cornering stiffness, for example, is sensitive to design factors such as tread compound and tread pattern. The radial, lateral, and circumferential sidewall stiffnesses, howeve

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Han, Yifeng, Xuecai Zhang, Kun Cai, Xu Chai, Jinyu Li, and Zhengzhong Wang. "Numerical Optimization of the Dendritic Arm of a Radial Gate Based on Stability and Light Weight." Sustainability 14, no. 24 (2022): 16507. http://dx.doi.org/10.3390/su142416507.

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A new dendritic arm structure was proposed to achieve the stability and lightness of a large-scale radial gate arm. The arm structure was arranged in accordance with the current gate design specifications for steel. The optimization aims were to achieve the highest possible overall structural stability and the lowest possible weight. As the failure criterion for the entire structure, the simultaneous instability of the trunks and branches of the dendritic arm was considered. The constraints of strength, stiffness, and stability were identified, and an optimization model of a dendritic arm with

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Kozai, M., Y. Hayashi, K. Fujii, et al. "Cosmic-Ray North–South Anisotropy: Rigidity Spectrum and Solar Cycle Variations Observed by Ground-based Muon Detectors." Astrophysical Journal 977, no. 2 (2024): 160. https://doi.org/10.3847/1538-4357/ad8577.

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Abstract The north–south (NS) anisotropy of galactic cosmic rays (GCRs) is dominated by a diamagnetic drift flow of GCRs in the interplanetary magnetic field (IMF), allowing us to derive key parameters of cosmic-ray propagation, such as the density gradient and diffusion coefficient. We propose a new method to analyze the rigidity spectrum of GCR anisotropy and reveal a solar cycle variation of the NS anisotropy’s spectrum using ground-based muon detectors in Nagoya, Japan, and Hobart, Australia. The physics-based correction method for the atmospheric temperature effect on muons is used to com

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Tkachuk, Mykola M., Andrey Grabovskiy, Mykola А. Tkachuk, et al. "ANALYSIS OF NONLINEAR RIGIDITY CHARACTERISTICS OF AIR BLOWER COMPRESSOR ELASTIC SUPPORTS." Bulletin of the National Technical University «KhPI» Series: Engineering and CAD, no. 1 (June 7, 2023): 121–30. http://dx.doi.org/10.20998/2079-0775.2023.1.12.

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Vibrations of rotor systems are largely determined by elastic characteristics of supports. In the general case, the dependence of displacements on force for such supports is nonlinear. This applies to bearing supports of various types. In addition to bearings, elastic elements are also used in supports of rotor systems. They are designed to change the overall stiffness of the supports. The paper analyzes the radial stiffness of flexible ring dampers used in rotor supports. For this, two main approaches are proposed. The first is a conventional simulation of this problem of contact mechanics us

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Tyshkevich, V. N., V. A. Nosenko, A. V. Sarazov, and S. V. Orlov. "Selecting Optimal Conditions for Flat Grinding Linear Bearings Guides of Low Rigidity." Proceedings of Higher Educational Institutions. Маchine Building, no. 7 (736) (July 2021): 30–39. http://dx.doi.org/10.18698/0536-1044-2021-7-30-39.

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The article discusses the proposed algorithm and method for determining the optimal grinding conditions for linear bearing guides of low rigidity, which ensure meeting the specified requirements for the quality of the processed surface (surface roughness parameter Ra, no grinding burns and surface flatness tolerance) at maximum process productivity. Input factors (grinding wheel hardness, radial feed, table feed speed) are parameters for optimizing the grinding process. Mathematical models of the output factors are designed to limit the range of acceptable values of the optimization parameters

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41

Popa, Carmen, Violeta Anghelina, and Veronica Despa. "Rigidity of Circular Plates with Radial Ribs, Placed on One Side, Neglecting the Influence of Welding Seams. Nerves with Constant Thickness and Height Along the Entire Length." Scientific Bulletin of Valahia University - Materials and Mechanics 18, no. 18 (2022): 58–62. http://dx.doi.org/10.2478/bsmm-2022-0010.

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Abstract The present study refers to a plane circular plate, provided with equidistant radial ribs, placed on one side (fig. 1), these having the same geometry of the cross section (thickness and height) along their entire length (fig.2). There is a change in the position of the neutral fiber of the ribbed plate and also in its bending rigidity, along the radius of the plate, in different cases.

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Ku, JH, YS Song, ME Kim, NK Lee, and YH Park. "Is there a role of radial rigidity in the evaluation of erectile dysfunction?" International Journal of Impotence Research 13, no. 4 (2001): 200–204. http://dx.doi.org/10.1038/sj.ijir.3900674.

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Molaghasemi, H. R., and I. E. Harik. "Free Vibration and Dynamic Stiffening of Sector Plates wih Radial Variation in Rigidity." Journal of Sound and Vibration 169, no. 2 (1994): 284–88. http://dx.doi.org/10.1006/jsvi.1994.1529.

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Sadredine, Abainia. "Surface roughness prediction of thin-walled parts impacted by radial depth of cut variations during peripheral milling process." FME Transactions 51, no. 3 (2023): 284–97. http://dx.doi.org/10.5937/fme2303284s.

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During the peripheral milling process, great transverse displacement vibrations of the thin-walled part are occurred under the acting of milling tool edge forcesdue to their low dynamic rigidity and the radial depth of cut ae variations. In this work, the main surface roughness parameters are evaluated for stable milling process conditions through maximum radial displacements determined by a theoretical method and a finite element (FE) computation utilizing numerical simulations. The cutting tooth edge forces are calculated along the effective part for each tooth tool engaged into part materia

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45

Hsueh, Chun-Hway, and Pedro Miranda. "Modeling of contact-induced radial cracking in ceramic bilayer coatings on compliant substrates." Journal of Materials Research 18, no. 5 (2003): 1275–83. http://dx.doi.org/10.1557/jmr.2003.0175.

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Contact-induced radial cracking in ceramic coatings on compliant substrates was analyzed recently. Radial cracks initiate at the coating/substrate interface beneath the contact where maximum flexural tension occurs, and an analytical expression for the onset of radial cracking in monolayer coatings was formulated on the basis of the classical solution for flexing plates on elastic foundation. In the present study, the analytical expression was derived for the case of ceramic bilayer coatings on compliant substrates, which have significant applications in the structure of dental crowns. It was

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Pini, B. E., and D. A. Zinovyev. "Simulation of Tooling System Rigidity for Estimation Their Influence on Working Accuracy." Izvestiya MGTU MAMI 2, no. 2 (2008): 129–35. http://dx.doi.org/10.17816/2074-0530-69660.

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Moskovsky podshipnik enterprise uses the tool machine RAV-130 by Verkon company, Ukrain instead of 16K20F3 machine tool for treatment of radial ball bearing race. This tool allowed increasing productivity and working accuracy. The working accuracy was improved by design of tool carrier. This was proved-out by tooling system simulation of 16K20F3 and PAB-160 machines using Solid Works software. To investigate simulation objects the authors used COSMOS Works integrated package. Solid modeling demonstrated the advantages of design of tool carrier of PAB-160. This simulation can be applied when ch

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Ghitescu, Marilena, Ion-Marius Ghitescu, Sorin Vlase, and Paul Nicolae Borza. "Experimental Dynamic Rigidity of an Elastic Coupling with Bolts." Symmetry 13, no. 6 (2021): 989. http://dx.doi.org/10.3390/sym13060989.

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The paper presents an elastic coupling with bolts and intermediary non-metallic elements, which allows for radial and axial deviation and can absorb shocks and torsional vibrations. The designed bolts have a particular shape of a circular area of a length equal to the width of the non-metallic element, a cylindrical area larger than the diameter of the cylindrical groove where the non-metallic elements are mounted, and a cylindrical area smaller than the threaded area to avoid stress concentrators and bolt breakage. The coupling represents a symmetrical piece, having two planes of symmetry. Th

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Colasuonno, Francesca, Fausto Ferrari, Paola Gervasio, and Alfio Quarteroni. "Some evaluations of the fractional $ p $-Laplace operator on radial functions." Mathematics in Engineering 5, no. 1 (2022): 1–23. http://dx.doi.org/10.3934/mine.2023015.

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<abstract><p>We face a rigidity problem for the fractional $ p $-Laplace operator to extend to this new framework some tools useful for the linear case. It is known that $ (-\Delta)^s(1-|x|^{2})^s_+ $ and $ -\Delta_p(1-|x|^{\frac{p}{p-1}}) $ are constant functions in $ (-1, 1) $ for fixed $ p $ and $ s $. We evaluated $ (-\Delta_p)^s(1-|x|^{\frac{p}{p-1}})^s_+ $ proving that it is not constant in $ (-1, 1) $ for some $ p\in (1, +\infty) $ and $ s\in (0, 1) $. This conclusion is obtained numerically thanks to the use of very accurate Gaussian numerical quadrature formulas.</p>

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Lee, Kyoungho, and Joong Seok Lee. "Optimal Design of the Flexure Mount for Optical Mirror Using Topology Optimization Considering Thermal Stress Constraint." Journal of the Korea Institute of Military Science and Technology 25, no. 6 (2022): 561–71. http://dx.doi.org/10.9766/kimst.2022.25.6.561.

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An optical mirror assembly is an opto-mechanically coupled system as the optical and mechanical behaviors interact. In the assembly, a flexure mount attached to an optical mirror should be flexible in the radial direction, but rigid for the remaining degrees of freedom for supporting the mirror rigidly and suppressing the wavefront error of the optical mirror. This work presents an optimal design of the flexure mount using topology optimization with thermal stress constraint. By simplifying the optical mirror assembly into finite shell elements, topology optimization model was built for effici

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Goroshko, A., and M. Zembytska. "Analysis of the influence of radial clearance in a bearing on its operating modes, taking into account mass and magnetic imbalance of the induction motor rotor." Problems of Tribology 30, no. 2/116 (2025): 19–26. https://doi.org/10.31891/2079-1372-2025-116-1-19-26.

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The article studies the problem of the journal motion of a three-phase induction motor rotor in a bearing. A simplified model of the journal motion is studied at the moment of journal separation and transition from the pendulum mode of journal motion to the impact mode. In this case, the elastic-damping properties of the bearing and the final rigidity of the rotor are ignored. The model takes into account the eccentricity of the rotor mass and the radial internal clearance of the bearing. In addition, the forces of unbalanced magnetic pull (UMP) caused by the magnetic eccentricity of the induc

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