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Journal articles on the topic 'SPINNING SHAFT'

Author: Grafiati

Published: 11 September 2023

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1

Gayen, Debabrata, and Tarapada Roy. "Finite element based vibration analysis of functionally graded spinning shaft system." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 18 (2014): 3306–21. http://dx.doi.org/10.1177/0954406214527923.

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The present work deals with the study of vibration and stability analysis of a functionally graded spinning shaft system using three-noded beam element based on the Timoshenko beam theory. Material properties are assumed to be graded in radial direction according to power law gradation. In the present analysis, the mixture of aluminum oxide (Al2O3) and stainless steel (SUS304) has been considered as functionally graded material where metal (SUS304) content decreases towards the outer diameter of the shaft. The functionally graded shafts has been modeled as a Timoshenko beam, which contains dis

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2

Chang, Min-Yung, Jeng-Keag Chen, and Chih-Yung Chang. "A simple spinning laminated composite shaft model." International Journal of Solids and Structures 41, no. 3-4 (2004): 637–62. http://dx.doi.org/10.1016/j.ijsolstr.2003.09.043.

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3

Sturla, F. A., and A. Argento. "Free and Forced Vibrations of a Spinning Viscoelastic Beam." Journal of Vibration and Acoustics 118, no. 3 (1996): 463–68. http://dx.doi.org/10.1115/1.2888206.

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The free and forced response of spinning, viscoelastic, Rayleigh shafts is studied. Viscoelasticity is included using the three parameter solid model. The closed form polynomial frequency equation and integral expressions for the response to a general forcing function are derived. A convenient decay parameter is described. Results are given for natural frequencies and decay rates as functions of shaft rotation speed, stiffness, and viscosity. It is found that shaft materials are possible which have desirable damping and natural frequency characteristics. A parameter case is discussed in which

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4

Botros, K. K. "Transient Phenomena in Compressor Stations During Surge." Journal of Engineering for Gas Turbines and Power 116, no. 1 (1994): 133–42. http://dx.doi.org/10.1115/1.2906782.

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Transient phenomena are generally inherent in the operation of compressor stations: These are either fast or slow transients. A model describing the governing equation for the gas dynamics, control system, compressor and turbine shaft inertias has been developed. The effect of these inertias is manifested by an example of a compressor station operating near the surge control line. Another example deals with a station that has a cooler placed in the recycle path. This alters the rate at which the compressor shaft decelerates upon shutdown and may cause backward spinning depending on the relativ

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5

Salam, Abdul, Muh Iswar, Bensar Pali, Agustinus Anggai, and Janchristo Rantemangnga. "Modifikasi Alat Pemintal Benang Sutera Untuk Industri Rumah Tangga." Jurnal Sinergi Jurusan Teknik Mesin 17, no. 1 (2019): 101. http://dx.doi.org/10.31963/sinergi.v17i1.1599.

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This study aims to determine the yarn spinning time, spinning equipment manufacturing costs, and haspel shaft spinning. Basic design is done by data collection, direct visits to the silk farmers' groups, tool design, tool manufacturing, performance testing tools, analysis, calculating costs and tool manufacturing. In accordance with the testing of the spinning machine, the total working time is 8 hours / day for 3.36 kg of silk yarn, the spinning equipment manufacturing cost is Rp. 5,102,534.71. Whereas BEP is achieved when the sale of spinning machines is at least 1 unit / month or when incom

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6

Wong, E., and J. W. Zu. "Dynamic Response of a Coupled Spinning Timoshenko Shaft System." Journal of Vibration and Acoustics 121, no. 1 (1999): 110–13. http://dx.doi.org/10.1115/1.2893936.

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The dynamic behavior of a simply-supported spinning Timoshenko shaft with coupled bending and torsion is analyzed. This is accomplished by transforming the set of nonlinear partial differential equations of motion into a set of linear ordinary differential equations. This set of ordinary differential equations is a time-varying system and the solution is obtained analytically in terms of Chebyshev series. A beating phenomoenon is observed from the numerical simulations, which is not observed for shaft systems where only bending vibration is considered.

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7

Mario Sariski Dwi Ellianto, Yusuf Eko Nurcahyo, and Fajrul Fikri Al Firdausi. "Empowerment of Fishermen Communities through the Utilization of Spinning Machine Technology in Weru Village, Paciran District." Soeropati 4, no. 2 (2022): 142–50. http://dx.doi.org/10.35891/js.v4i2.3302.

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The problem faced by the Slap Strap Making Business Group is that the process of making slap ropes is still manual using a hand drill. This business group experienced many problems when using manual methods, such as the results of the twisting of the slapping rope were not uniform and many were loose. The second obstacle faced is that manual labor requires a lot of manpower for the slap rope spinning process. The last obstacle faced is when using a spinning machine there is a concern that the electricity supply will not be able to meet because the electricity supply in the area around the coas

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8

Yadao, Adik Ramdayal, Ravi P. Singh, and D. R. Parhi. "Influence of Parameters of Cracked Rotor System on its Vibration Characteristics in Viscous Medium at Finite Region." Applied Mechanics and Materials 592-594 (July 2014): 2061–65. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.2061.

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The paper summarizes a complete analysis about vibrational characteristics of a spinning simply supported cracked shaft with fluid medium at finite region. The damping effect occurs due to external fluid is integrated in the existing analysis, with the help of navier - stokes equation. The simply supported cracked shaft is analyzed by the influence coefficient strain energy method. Here we have changing the parameter of shaft i.e. damping viscosity of fluid and the length of the shaft which accountable for the alteration of the amplitude of vibration.

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9

Lee, Usik, In Joon Jang, and Il Wook Park. "Frequency-Domain Spectral Element Model of a Uniform Spinning Shaft." Applied Mechanics and Materials 224 (November 2012): 264–67. http://dx.doi.org/10.4028/www.scientific.net/amm.224.264.

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This paper presents a spectral element model for the spinning uniform shaft represented by the Timoshenko beam model. The bearing-supports are represented by equivalent springs. The variational approach is used to formulate the spectral element model from the frequency-dependent shape functions derived from exact wave solutions to the governing differential equations.

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10

Boukhalfa, Abdelkrim. "Campbell Diagrams of a Spinning Composite Shaft with Curvilinear Fibers." Latin American Journal of Solids and Structures 14, no. 4 (2017): 575–93. http://dx.doi.org/10.1590/1679-78253326.

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11

Dasgupta, S. S., A. K. Samantaray, and R. Bhattacharyya. "Stability of an internally damped non-ideal flexible spinning shaft." International Journal of Non-Linear Mechanics 45, no. 3 (2010): 286–93. http://dx.doi.org/10.1016/j.ijnonlinmec.2009.12.002.

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12

Shahgholi, Majid, Siamak Esmaeilzadeh Khadem, and Saeed Bab. "Nonlinear vibration analysis of a spinning shaft with multi-disks." Meccanica 50, no. 9 (2015): 2293–307. http://dx.doi.org/10.1007/s11012-015-0154-8.

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13

Adekunle, Atta, and Owolarafe Oseni. "Development and Performance Evaluation of a Small Scale Kenaf Fibre Spinning and Reeling Machine." Agricultural Engineering 27, no. 1 (2023): 163–72. http://dx.doi.org/10.2478/agriceng-2023-0012.

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Abstract A developed small scale kenaf spinning and reeling machine was evaluated in this study. The machine uses the principle of the ring spinning technique to produce spun kenaf-yarn (single or double-ply). The machine component includes two 0.5 kW electric motors positioned on a 640×433×10 mm mild steel frame (with speeds of the electric motors controlled by 0.5 kW variable frequency drives), twisting spindle, inlet frustum, feed roller shaft, reeling and spinning shafts, bearings, and a bevel gear. The machine was evaluated using different spinning speeds (90, 100 and 110 rpm), reeling sp

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14

Yang, Shih-Ming. "Vibration of a Spinning Annular Disk With Coupled Rigid-Body Motion." Journal of Vibration and Acoustics 115, no. 2 (1993): 159–64. http://dx.doi.org/10.1115/1.2930326.

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The vibration of a spinning annular disk with coupled translational and rotational rigid-body motion is analyzed. The spinning disk, with one linear spring as transverse load, is free to translate and rotate relative to the shaft axis. Modal functions of a stationary annular disk are used to describe the elastic displacement of the spinning disk. The governing equation includes the rigid disk translation, rotation, and the flexible disk vibration. Coupling effects between the rigid-body motion and the annular disk modal function are identified in the formulation. Because of the coupling effect

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15

Dasgupta, Sovan, and John Rajan. "Steady-state and transient responses of a flexible eccentric spinning shaft." FME Transaction 46, no. 1 (2018): 133–37. http://dx.doi.org/10.5937/fmet1801133d.

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16

Shahgholi, Majid, and Siamak Esmaeilzadeh Khadem. "Resonances of an in-extensional asymmetrical spinning shaft with speed fluctuations." Meccanica 48, no. 1 (2012): 103–20. http://dx.doi.org/10.1007/s11012-012-9587-5.

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17

Georgiades, Fotios. "Nonlinear dynamics of a spinning shaft with non-constant rotating speed." Nonlinear Dynamics 93, no. 1 (2017): 89–118. http://dx.doi.org/10.1007/s11071-017-3888-0.

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18

Lee, Usik, and Injoon Jang. "Spectral element model for the vibration of a spinning Timoshenko shaft." Journal of Mechanics of Materials and Structures 7, no. 2 (2012): 145–64. http://dx.doi.org/10.2140/jomms.2012.7.145.

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19

WANG, Z. C., and W. L. CLEGHORN. "STABILITY ANALYSIS OF SPINNING STEPPED-SHAFT WORKPIECES IN A TURNING PROCESS." Journal of Sound and Vibration 250, no. 2 (2002): 356–67. http://dx.doi.org/10.1006/jsvi.2001.3725.

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20

Mustapha, K. B., Z. W. Zhong, and S. B. A. Kashem. "Vibration Behavior of Gravity-Loaded Whirling Micro-Scale Shafts Influenced by an Axial Magnetic Field." International Journal of Structural Stability and Dynamics 17, no. 09 (2017): 1750110. http://dx.doi.org/10.1142/s0219455417501103.

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Some high-speed rotating micro-machines and micro-vibration devices rely on the use of whirling micro-shafts subject to the effect of gravity and magnetic fields. At present, the consequences of the interaction between the elastic deformation of such shafts and the magnetic/gravitational field effects remain unresolved. Focusing on micro-scale whirling shafts with very high torsional rigidity, this study presents a theoretical treatment grounded in the theory of micro-continuum elasticity to examine the ramification of this interaction. The differential transformation method (DTM) is used to o

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21

Timofievskiy, A. A. "Problems of process control for shifting gears on tractors without torque interruption." Izvestiya MGTU MAMI 10, no. 3 (2016): 32–42. http://dx.doi.org/10.17816/2074-0530-66905.

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The article considers the problem of optimizing the process control for shifting gears on tractors without torque interruption. The opinion on the dynamics of process control for shifting gears is explained, it takes into account the occurrence of torque deficit in the shafts, when changing gear, and increasing of friction losses in spinning clutch. The formulas for calculating the dynamic parameters used in the mathematical model of the dynamics of the tractor when shifting gears without torque interruption are shown. With the help of the mathematical model developed in Scientific and Researc

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22

Li, Wei, Zhiwei Song, Xuexia Gao, and Zhigang Chen. "Dynamic Instability Analysis of a Rotating Ship Shaft under a Periodic Axial Force by Discrete Singular Convolution." Shock and Vibration 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/482607.

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Dynamic instability of a rotating ship shaft subjected to a periodic axial force is studied by using discrete singular convolution (DSC) with regularized Shannon’s delta kernel. The excitation frequency is related to the spinning speed and the number of blades on the propeller. Effects of number of blades, constant term in the periodic force, and damping on dynamic instability regions are investigated. The results have shown that the increase of number of blades and damping could improve the dynamic stability of rotating shaft with damping. The increase of constant term in the periodic force l

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23

Dasgupta, Sovan Sundar, and Vasudevan Rajamohan. "Dynamic characterization of a flexible internally damped spinning shaft with constant eccentricity." Archive of Applied Mechanics 87, no. 10 (2017): 1769–79. http://dx.doi.org/10.1007/s00419-017-1285-2.

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24

Chan, K. T., N. G. Stephen, and S. R. Reid. "Helical structure of the waves propagating in a spinning Timoshenko beam." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 461, no. 2064 (2005): 3913–34. http://dx.doi.org/10.1098/rspa.2005.1524.

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The aim of the paper is to study the cause of a frequency-splitting phenomenon that occurs in a spinning Timoshenko beam. The associated changes in the structure of the progressive waves are investigated to shed light on the relationship between the wave motion in a spinning beam and the whirling of a shaft. The main result is that travelling bending waves in a beam spinning about its central axis have the topological structure of a revolving helix traced by the centroidal axis with right-handed or left-handed chirality. Each beam element behaves like a gyroscopic disc in precession being rota

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25

Ghosh, R., A. Saha, A. Nandi, and S. Neogy. "Stability Analysis of a Flexible Spinning and Precessing Rotor with Non-symmetric Shaft." Journal of Vibration and Control 16, no. 1 (2009): 107–25. http://dx.doi.org/10.1177/1077546309106522.

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26

Zhu, Huai-liang. "Transient responses of flexible non-uniform spinning shaft with nonlinear and asymmetric supports." Journal of Shanghai University (English Edition) 5, no. 1 (2001): 35–39. http://dx.doi.org/10.1007/s11741-001-0024-6.

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27

Pettigrew, Devin B., John C. Whittaker, Justin Garnett, and Patrick Hashman. "How Atlatl Darts Behave: Beveled Points and the Relevance of Controlled Experiments." American Antiquity 80, no. 3 (2015): 590–601. http://dx.doi.org/10.7183/0002-7316.80.3.590.

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Beveled retouch on stone projectile points has often been considered as a device to spin and stabilize a projectile. A recent paper showed that a beveled point will spin a small shaft under tightly controlled laboratory conditions. However, this experiment has little relevance for real projectiles such as atlatl darts, which flex dramatically and spin unevenly inflight, quite independent of point form. The spinning is related to the flexibility of the dart, which is necessary for spearthrower functión. A beveled point cannot spin a dart in the air, but is likely to cause some rotation when enc

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28

Chen, L. W., and H. C. Sheu. "THE STABILITY BEHAVIOR OF A NON-CONSERVATIVE SPINNING TIMOSHENKO SHAFT WITH AN OVERHUNG DISK." Journal of Sound and Vibration 200, no. 1 (1997): 41–61. http://dx.doi.org/10.1006/jsvi.1996.0719.

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29

Qian, Xin, Guo Chang Lin, and Xing Wen Du. "Vibration Measurement and Data Analysis of a Spinning Shaft Using a Camera-Based Motion Analysis System." Applied Mechanics and Materials 29-32 (August 2010): 203–8. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.203.

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This paper presents the use of a camera-based 3D motion analysis system for non-contact dynamic testing of a highly flexible spinning vertical shaft. The camera system uses high-resolution CMOS cameras to measure instant geometry of the shaft when visible red digital LED strobes are synchronized to work at a speed between 0.1 to 2000 frames per second. Dynamically deformed geometries are obtained by tracing the three-dimensional instantaneous coordinates of markers adhered to the shaft’s outside surface and triangulation techniques for identifying markers’ coordinates. Numerical simulation and

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30

Miao, Qiang, and Qinghua Zhou. "Planetary Gearbox Vibration Signal Characteristics Analysis and Fault Diagnosis." Shock and Vibration 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/126489.

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Planetary gearboxes are widely used in helicopters, wind turbines, mining machinery, and so forth. The structure and motion type of a planetary gearbox are more complex in comparison with a fixed-shaft one, which makes condition monitoring and fault diagnosis of planetary gearbox a challenging issue in practical applications. In order to understand the fundamental nature of planetary gearbox vibration, this paper conducts an investigation on vibration characteristics of a single-stage planetary gearbox. Assuming that the gearbox and the sensor revolve inversely at the speed of planet carrier,

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31

Kandouci, Ch. "Whirling Analysis of Stepped Timoshenko Shaft Carrying Several Rigid Disks." Journal of Mechanical Engineering 19, no. 2 (2022): 97–124. http://dx.doi.org/10.24191/jmeche.v19i2.19767.

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Rotor system is the main part of turbomachines. Critical speeds occur when the rotor spin-speed matches with its natural frequencies, and result in great vibration amplitudes often leading to catastrophic failure. Design specifications based on these critical speeds become essential for the engineer. In this paper, whirling vibrations of a spinning, stepped Timoshenko shaft carrying three identical rigid disks are solved using a developed program in Fortran 90 language, based on relationships between the solution coefficient vectors of differential equations of motion. The flexural vibrations

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32

Ganguly, Smitadhi, A. Nandi, and S. Neogy. "A viscoelastic Timoshenko shaft finite element for dynamic analysis of rotors." Journal of Vibration and Control 24, no. 11 (2016): 2180–200. http://dx.doi.org/10.1177/1077546316681685.

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A new shaft element is proposed for viscoelastic rotors in a spinning frame considering the shear deformation in addition to bending deformation. The Maxwell–Wiechert model is considered here to replicate linear viscoelastic behavior. This model considers additional internal damping displacement variables between elastic and viscous elements and the stress depends not only on the elastic strain and elastic strain rate, but also on additional strains and their rates corresponding to the damping variables. The present work assumes that these additional strains can be derived from continuous fict

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33

Wen, Zhuqing, and Jerzy Petera. "CFD Numerical Simulation of Biodiesel Synthesis in a Spinning Disc Reactor." Chemical and Process Engineering 36, no. 1 (2015): 21–37. http://dx.doi.org/10.1515/cpe-2015-0002.

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Abstract In this paper a two-disc spinning disc reactor for intensified biodiesel synthesis is described and numerically simulated. The reactor consists of two flat discs, located coaxially and parallel to each other with a gap of 0.2 mm between the discs. The upper disc is located on a rotating shaft while the lower disc is stationary. The feed liquids, triglycerides (TG) and methanol are introduced coaxially along the centre line of rotating disc and stationary disc. Fluid hydrodynamics in the reactor for synthesis of biodiesel from TG and methanol in the presence of a sodium hydroxide catal

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34

Dong, Zhen, and Zhi Rong Ding. "Manufacture of Hollow Cross Sectional Regenerated Cellulose Fiber Using HWM Spinning Method." Advanced Materials Research 472-475 (February 2012): 744–47. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.744.

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Traditional regenerated cellulose fiber (viscose or viscose fiber) had a poor wet breaking strength and wet modulus, which to some extent limited the application of the fiber. Hollow viscose was difficult to get for its instability during the cellulose regenerating process. This paper introduced one kind of new spinning method for hollow viscose through a spinneret of concentric shaft structure using HWM technology. The hollow viscose fiber produced in this experiment had a big crystalline structure and an excellent fibril orientation which gifted the fiber a good mechanical performance even u

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35

Na, Sungsoo, Hyungwon Yoon, and Liviu Librescu. "Effect of taper ratio on vibration and stability of a composite thin-walled spinning shaft." Thin-Walled Structures 44, no. 3 (2006): 362–71. http://dx.doi.org/10.1016/j.tws.2006.02.007.

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36

Jia, H. S. "ON THE BENDING COUPLED NATURAL FREQUENCIES OF A SPINNING, MULTISPAN TIMOSHENKO SHAFT CARRYING ELASTIC DISKS." Journal of Sound and Vibration 221, no. 4 (1999): 623–49. http://dx.doi.org/10.1006/jsvi.1998.2032.

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37

BORZEA, Claudia, Adrian SAVESCU, Iulian VLADUCA, and Adrian STOICESCU. "ASYNCHRONOUS THREE-PHASE MACHINE DRIVEN AS GENERATOR BY A TWIN-SCREW EXPANDER." "ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)" 2020, no. 1 (2021): 1–8. http://dx.doi.org/10.36801/apme.2020.1.5.

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The paper presents the functioning regimes of a 132 kW asynchronous three-phase machine, used for the expander-generator system in a compressed air energy storage facility. The installation consists of a 110 kW twin-screw electro-compressor, which supplies pressurized air up to ~16 bar into a 50 cubic meters storage vessel. The compressed air is afterwards released from the reservoir into expander’s inlet, spinning its shaft. When the expander’s shaft spins the electric machine over its synchronous speed, this one enters in generator mode, supplying electric power into the grid. Two power anal

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38

Rudovsky, P. N. "FORMATION OF PACKAGES WITH PERIODIC CHANGE OF FORCES OF PRESSURE OF THE DRUM TO WINDING SHAFT." Technologies & Quality, no. 4 (2019): 20–24. http://dx.doi.org/10.34216/2587-6147-2019-4-46-20-24.

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For the formation of high-quality packaging of cross winding on machines with a constant speed, release into the composition of the winding mechanism introduce a dispersion device of the bundle winding, providing a change in the speed of the yarn guide according to the law with a long cycle of work. When laying the thread with a slotted drum, as on a spinning self-rolling machine PSK-225 SH there is no way to influence the movement of the yarn guide. In this case, effective dispersion can be achieved by periodically changing the clamping force of the bobbin to the winding shaft. When the effor

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Akyuz, U. "Separation at the interface of non-linearly elastic spinning tube–rigid shaft subjected to circumferential shear." International Journal of Non-Linear Mechanics 39, no. 8 (2004): 1333–41. http://dx.doi.org/10.1016/j.ijnonlinmec.2003.09.003.

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Cuttino, J. F., T. A. Dow, and B. F. Knight. "Analytical and Experimental Identification of Nonlinearities in a Single-Nut, Preloaded Ball Screw." Journal of Mechanical Design 119, no. 1 (1997): 15–19. http://dx.doi.org/10.1115/1.2828782.

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The nonlinear performance of a single-nut, preloaded ball screw actuator is analyzed in this paper. The study identifies the source of nonlinear torque in the ball screw and subsequently maps that torque into the nonlinear displacement response due to windup in the shaft. The study is complemented with an experimental verification using a small angle rotation fixture (ARC) to input very small amplitude angular displacements to the screw while measuring induced torque and displacements. The experimental results are obtained from a Precision Linear Optimization Testbed (PLOT) which was developed

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41

Jianliang, Guo, and Han Rongdi. "Simulating the Diameter Error Due to the Dynamic Response of a Spinning Slender Shaft in Turning Operation." SIMULATION 82, no. 4 (2006): 227–33. http://dx.doi.org/10.1177/0037549706067647.

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42

Liu, J., Y. B. Liu, X. M. Jiang, X. Luo, and M. Zeng. "Design and research of supplying power for spinning emitter in needleless electrospinning with non-metallic rotating shaft." Journal of Physics: Conference Series 1209 (April 2019): 012002. http://dx.doi.org/10.1088/1742-6596/1209/1/012002.

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43

Monajemi, A. A., and M. Mohammadimehr. "Effects of residual stress and viscous and hysteretic dampings on the stability of a spinning micro-shaft." Applied Mathematics and Mechanics 41, no. 8 (2020): 1251–68. http://dx.doi.org/10.1007/s10483-020-2640-8.

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44

Mu, Shi Gang, and Xian Ying Feng. "Analysis of Elastohydrodynamic Lubrication of Ball Screw with Rotating Nut." Applied Mechanics and Materials 121-126 (October 2011): 3132–39. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.3132.

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The isothermal elliptical contact elastohydrodynamic lubrication (EHL) problem in ball screw with rotating nut was studied.Numerical solution to the problem was obtained for various parameters with a multigrid solver.Based on work mentioned above,the influence of the working parameters such as the rotating speed of screw shaft and the contact force,on the lubricant oil film thickness and pressure is analyzed .The results showed that, with the increasing loads,the pressure became higher,the film thickness became smaller. On the other hand,when the angular velocity was higher,the film thickness

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45

Rodika, Rodika, Tuparjono Tuparjono, Budi Otomo, and Riska Ade Febryani. "Rancangan Mesin Pembelah Buah Pinang Dengan Dua Mata Potong." Manutech : Jurnal Teknologi Manufaktur 10, no. 02 (2019): 59–63. http://dx.doi.org/10.33504/manutech.v10i02.72.

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Betel nut palm plant is one of the many benefits and efficacy, especially seeds. Areca nuts are widely used as the main raw material in the process of making drugs, cosmetics, slimming, snacks, sweets, and coffee. Betel nut processing into betel nut is still constrained by the tool is still modest, are still using wood beams repose knife to split betel nut into two parts. To overcome these problems needed betel nut splitter machine with a capacity of 250 kg / h. This engine design is expected to help farmers during the process of betel nut processing into dried betel nut. The working principle

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Vranas, Miles, and Nikos J. Mourtos. "Compact Shaft-Rotating Swerve Drive with Prong Structure for Highly-Maneuverable and Agile Robots." Athens Journal of Τechnology & Engineering 9, no. 1 (2022): 25–42. http://dx.doi.org/10.30958/ajte.9-1-2.

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Robots are becoming increasingly important in our lives. Although many robots are stationary, for example robotic arms, moving robots are of particular interest for many applications. Applications of moving robots today include combating COVID-19 in hospitals, transporting goods in and across warehouses and distribution centers, and moving equipment and instrumentation in space, to name a few. Mobile robots are often required to maneuver rapidly in tight spaces. The best way to achieve this is through a modular assembly called Swerve Drive, which is a driven wheel that can pivot 360 degrees. T

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Wen, Zhuqing, and Jerzy Petera. "Numerical Analysis of The Effect of Hydrodynamics and Operating Conditions on Biodiesel Synthesis in a Rotor-Stator Spinning Disk Reactor." Chemical and Process Engineering 38, no. 2 (2017): 265–81. http://dx.doi.org/10.1515/cpe-2017-0020.

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AbstractA rotor-stator spinning disk reactor for intensified biodiesel synthesis is described and numerically simulated in the present research. The reactor consists of two flat disks, located coaxially and parallel to each other with a gap ranging from 0.1 mm to 0.2 mm between the disks. The upper disk is located on a rotating shaft while the lower disk is stationary. The feed liquids, triglycerides (TG) and methanol are injected into the reactor from centres of rotating disk and stationary disk, respectively. Fluid hydrodynamics in the reactor for synthesis of biodiesel from TG and methanol

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Pratomo, H., A. N. Ichniarsyah, and T. P. Purboningtyas. "Design of ‘ready-to-pack’ deep frying machine." IOP Conference Series: Earth and Environmental Science 1038, no. 1 (2022): 012056. http://dx.doi.org/10.1088/1755-1315/1038/1/012056.

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Abstract Food processing by applying high temperatures can eliminate most microbes and inactivate enzymes that can cause spoilage. Food processing tools and machines have an important role to provide better quality results and carried out more efficiently and effectively. This study aimed to obtain and analyze data also to create design documentation for a ‘readyto-pack’ deep frying machine. Data were collected by means of observation, interviews, and documentations. Data analysis was carried out by processing the collected data with mathematical calculations. The design documentation process

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Delgado, Adolfo, and Luis San Andrés. "Identification of Structural Stiffness and Damping Coefficients of a Shoed-Brush Seal." Journal of Vibration and Acoustics 129, no. 5 (2007): 648–55. http://dx.doi.org/10.1115/1.2775516.

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The multiple-shoe brush seal, a variation of a standard brush seal, accommodates arcuate pads at the bristles’ free ends. This novel design allows reverse shaft rotation operation and reduces and even eliminates bristle wear, since the pads lift-off due to the generation of a hydrodynamic film during rotor spinning. This type of seal, able to work at both cold and high temperatures, not only restricts secondary leakage but also acts as an effective vibration damper. The dynamic operation of the shoed-brush seals, along with the validation of reliable predictive tools, relies on the appropriate

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Boukhalfa, Abdelkrim. "Dynamic analysis of a spinning functionally graded material shaft by the p - version of the finite element method." Latin American Journal of Solids and Structures 11, no. 11 (2014): 2018–38. http://dx.doi.org/10.1590/s1679-78252014001100007.

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