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Journal articles on the topic 'Roller chain transmission'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Liu, Xiao Lun, Wei Sun, Song Ding, Jian Fang Liu, Yu Ying Wang, and Bin Jiang. "Test and Analysis of Bush Roller Chains for Noise Reduction." Applied Mechanics and Materials 52-54 (March 2011): 430–35. http://dx.doi.org/10.4028/www.scientific.net/amm.52-54.430.

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A low noise duplex bush chains with split rollers was developed through changing roller structure to reduce noise of bush roller chains. The split rollers could absorb more impact energy, mitigate meshing impact and reduce chain drive noise. The noise generated by different types of duplex bush roller chains was carried out to test in same speed, low noise characteristics of duplex sleeve chains with split rollers was verified. By analysis of testing data, noise level of duplex sleeve chains with split rollers compared with that of the other duplex bush roller chains was reduced by the average

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2

Usova, Elena, Valentina Usova, Pavel Ivanov, and Alexandra Krasnova. "Analysis of changes in the speed characteristics of roller chains due to their wear." АгроЭкоИнфо 3, no. 69 (2025): 9. https://doi.org/10.51419/202153309.

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Today, roller chains are most often used in chain transmissions as a transmission body. At the same time, there are no dependencies reflecting the nature of the change in kinematic characteristics as the parts of the chain joints wear out, despite the fact that the kinematic characteristics of a chain with worn hinges differ greatly from the nominal values. Keywords: CHAIN TRANSMISSION, ROLLER CHAIN, WEAR, KINEMATICS, CHAIN SPEED

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3

Wu, Yang Fang, Hua Liu, and Yong Gang Shi. "Design a Two-Harmonics Transmission Mechanism with Roller Chain." Advanced Materials Research 503-504 (April 2012): 867–71. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.867.

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The binary row short-pitch transmission based precision roller chain highlights its radial flexibility and circumferential rigidity, it constructs a new type of harmonic transmission unit by replacing the tradition flexible wheel. Driven by a generator of mechanical harmonic wave the rollers of the binary row roller chain mesh with the teeth contour of the two inner gears which realizes reduction in small teeth difference and zero-tooth-difference synchronous output. The rotation components distribute uniformly on a plane. In theory, it is capable to eliminate dynamic imbalance factors. This p

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4

Lodge, C. J., and S. C. Burgess. "A model of the tension and transmission efficiency of a bush roller chain." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 216, no. 4 (2001): 385–94. http://dx.doi.org/10.1243/0954406021525179.

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This paper describes an improved chain link tension model for a simple two-sprocket roller chain drive. The model includes modified versions of previous models of the tension in the chain links, together with a new model for low-slack span tensions. The model allows the tension of a link to be calculated at any point in the chain drive more quickly and for a wider range of tight and slack span tensions than before. A new chain efficiency model is formulated, based on the losses due to sliding friction. Coupled with the chain link tension model, this can be used to predict the transmission effi

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5

Liu, Yong Xia, Shu Liang Zou, Tao Tang, and Qi Wang Zhou. "Study on Simulation of the Chain Transmission Mechanism." Advanced Materials Research 591-593 (November 2012): 797–800. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.797.

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The chain transmission’s feature, the main failure form of roller chain and the research for the simulation of the chain transmission mechanism are introduced. Taking the simulation of the chain transmission mechanism in feeding system of a mechanical equipment as the research object, the kinematical properties and the affecting factors are analysed in this paper. It adopts the advanced connection pair to establish relationship between the sprocket-wheel and rollers, and realistically simulates the kinematical characteristics of the chain transmission mechanism. It provides a reference for the

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6

Zhao, Jun Tian, Shun Zeng Wang, and Xiang Yang. "Elastodynamic Analysis on a Long-Distance Transmission Roller Chain." Applied Mechanics and Materials 607 (July 2014): 209–12. http://dx.doi.org/10.4028/www.scientific.net/amm.607.209.

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Based on the elastic model of a long-distance transmission roller chain, the elastodynamic analysis was taken in this paper, which has given unregulated displacement of chains. With RecurDyn software for the analysis and verification of the theoretical results, the displacement curves of X-axis, Y-axis and total displacement was obtained, which proved that the elastodynamic analysis on long-distance transmission roller chains is feasible with a continuous model.

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Wu, Yang Fang, Hua Liu, and Yong Gang Shi. "The Design of a Dynamic Equilibrium-Type Harmonic Transmission with Roller Chain." Advanced Materials Research 487 (March 2012): 845–49. http://dx.doi.org/10.4028/www.scientific.net/amr.487.845.

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The binary row short-pitch transmission based precision roller chain highlights its radial flexibility and circumferential rigidity, it constructs a new type of harmonic transmission unit by replacing the tradition flexible wheel. Driven by a generator of mechanical harmonic wave the rollers of the binary row roller chain mesh with the teeth contour of the two inner gears which realizes reduction in small teeth difference and zero-tooth-difference synchronous output. The rotation components distribute uniformly on a plane. In theory, it is capable to eliminate dynamic imbalance factors. This p

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8

Lanaspeze, Gabriel, Bérengère Guilbert, Lionel Manin, and Fabrice Ville. "Preliminary modelling of power losses in roller chain drive: application to single speed cycling." Mechanics & Industry 23 (2022): 27. http://dx.doi.org/10.1051/meca/2022026.

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A quasi-static chain drive model is proposed. This model, consistent with single speed cycling application, applies to simple two sprocket drives. The kinematics of the transmission is determined, including the capture and release positions of the rollers and the influence of the polygonal effect. The tensions into the links and the contact forces (between rollers and sprocket) are then calculated based on the results of the kinematic analysis. Both chain strands are assumed to be straight and their tension are considered as imposed. An estimate of the roller displacement is proposed using exi

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9

Zhang, Yanjuan, Zhengqing Yang, and Decai Li. "The roller chain lubricated with ferrofluids." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 6 (2018): 927–35. http://dx.doi.org/10.1177/1350650118806799.

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The sleeve of roller chain periodically squeezes the pin during the process of chain transmission. The lubrication oil located in the gap of the sleeve and pin will be pushed out and cannot be restored automatically. The absence of sufficient lubricating oil can cause friction, wear, and even the roller chain failure between the pin and the sleeve. This article presents a novel method and a new type of chain structure to lubricant roller chain with ferrofluids, which is capable of prolonging the service life of roller chain. The results show that ferrofluids can be remained in the clearance be

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10

Belousov, Yuri V. "Method for determining the optimal parameters of the chain transmission, taking into account the design of the drive chain." RUDN Journal of Engineering Researches 22, no. 1 (2021): 72–83. http://dx.doi.org/10.22363/2312-8143-2021-22-1-72-83.

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Goal . Develop the design of the drive plate chain and methods for determining the optimal parameters of the chain transmission. Methods. Analysis of the designs of standard drive bushing and roller chains, as well as the drive plate chain with internal engagement. Determination of ways to increase the durability of these chains and chain gears from the condition of ensuring the wear resistance of their hinges and increasing their technical and economic indicators. Results . The analysis of designs of standard drive bushing-roller chains and drive plate chains with internal gearing is performe

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11

Ding, Song, Donglin Jiang, and Hongyan Zhou. "Fault Diagnosis of Double Pitch Time-Sharing Meshing Toothed Conveyor Chain Transmission System Based on Neural Network." Mathematical Problems in Engineering 2022 (September 19, 2022): 1–8. http://dx.doi.org/10.1155/2022/8159609.

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With the rapid development of industry, the production and demand of automobiles have increased significantly. The generation of cars often requires tens of thousands of processes, consisting of hundreds of assembly lines to complete. Chain conveyors are widely used in the transportation of automobile assembly lines. The existing conveyor chains are roller chains. With the improvement of the requirements for conveyor reliability, synchronization, and environmental friendliness, the characteristics of roller conveyor chains restrict the further development of chain conveyors. It is urgent to st

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12

Kin, Y., and R. Dubrovsky. "New Power Transmission Chain Design." Journal of Vibration and Acoustics 108, no. 3 (1986): 255–61. http://dx.doi.org/10.1115/1.3269336.

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Precision multiple roller power transmissions are investigated in this work. These chains transfer significant power and move with very high velocity. They are subjected to variable loading with strong vibration and impact components, and require forced stream lubrication. Because of these severe working conditions, chain life is limited by the fatigue, and the chain plates are the weakest elements in many cases. It is shown that fatigue life is significantly decreased by fretting action, high stress concentration in the plates, and the impossibility of maintaining a uniform force distribution

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13

Le, Li Jia, and Liu Yong. "Study on the Serial Design of Chain Wheel of the Roller Chain Based on Pro/E." Applied Mechanics and Materials 66-68 (July 2011): 950–55. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.950.

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The roller chain is a kind of flexible transmission with high transmission efficiency, low precision requirement for the manufacture and mount of the base machine. Therefore, the roller chain is widely used in machinery manufacturing. In this paper, we use the man-machine interactive input to set a different parameters to create a different number of chain wheels with different standard pitch diameter and tip diameter by the Pro/Programme and we use the Family table that allows for rapid modeling of chain wheel to improve the design efficiency and quality of parts.

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14

Zhang, Sheng-Peng, and Tae-Oh Tak. "Efficiency Estimation of Roller Chain Power Transmission System." Applied Sciences 10, no. 21 (2020): 7729. http://dx.doi.org/10.3390/app10217729.

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In the present study, a novel approach to estimating the efficiency of roller chain power transmission systems is proposed based on sliding friction losses and damping force. The dynamics model is taken into account between chain links with lateral offset owing to the derailleur system. Frictional losses were calculated according to Coulomb’s law of friction, and the damping force was dependent on the damping coefficient. The effects of rotational speed, load, derailleur system, and damping coefficient on transmission efficiency were analyzed. The test stand of the roller chain power transmiss

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15

Sosnin, K., O. Gerasina, Yu Ribalchenko, and G. Schullerus. "Disclosure of state uncertainty of the roller chain based on cross-correlation." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 1 (February 28, 2022): 57–62. http://dx.doi.org/10.33271/nvngu/2022-1/057.

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Purpose. Reducing the downtime of transport equipment due to technical malfunction of the chain transmission by disclosing the uncertainty in the friction change of the plate roller open-chain through the estimation of the chain friction coefficient at idle speed. Methodology. To achieve the goal, the following tasks were set: to carry out a research on the change in the plate roller chain friction at idle speed; to develop a method for evaluating friction in the roller plate chain at idle speed. Research on the state of the roller plate chain in laboratory conditions is carried out on the ben

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16

Lanaspeze, Gabriel, Martin Best, Berengere Guilbert, et al. "Identification of key parameter influence on efficiency of chain drive for track cycling − Preliminary results." Mechanics & Industry 26 (2025): 21. https://doi.org/10.1051/meca/2025013.

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The presented paper investigates the efficiency of chain drive transmissions in track cycling, where performance optimization is critical as a win or loss between athletes is often decided in a matter of 1/100 seconds. A 2D quasi-static model (Chain Drive Efficiency Model, CDEM) was previously developed. It includes first a simulation of the global kinematics and then uses the roller movement along tooth profiles as well as the relative movement of chains part to calculate the efficiency. A dedicated experimental test rig was also designed to reproduce the chain transmission track cycling cond

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17

Wang, Yong. "Conjugate Meshing Roller Chain for Timing Mechanism." Key Engineering Materials 455 (December 2010): 92–97. http://dx.doi.org/10.4028/www.scientific.net/kem.455.92.

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In this paper, new sprocket tooth profile is developed to reduce polygonal action and meshing impact under high speed. The new conjugated profile is derived by modifying involute profile to guarantee that the moving distance of chain is equal to the arc length of pitch circle that sprocket rotates at the same time and the centre line of chain at tight side is tangent to the pitch circle always. An asymmetrical modification method for the sprocket tooth profile is also proposed. The multi-body dynamic model of timing mechanism in engine with the intake and exhaust sprockets is developed. The fl

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18

Zhao, Jun Tian, Shun Zeng Wang, and Zhen Xing Wang. "The Effects of the Wear Elongation on the Load of a Long-Distance Transmission Chain." Applied Mechanics and Materials 456 (October 2013): 60–64. http://dx.doi.org/10.4028/www.scientific.net/amm.456.60.

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This paper is on the effects of the wear elongation on a long-distance transmission roller chain. It presents the formulas of load calculation and the formulaic relationship between load and wear elongation in theory, with the point-by-point calculation method and chains/sprockets gearing model. With RecurDyn software for the analysis and verification of the theoretical results, it concludes that the total tension of every chain is the sum of static load and the corresponding proportion of dynamic load, and that a logical pre-tension can effectively reduce the vibration.

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19

Pan, M., and T. Shieh. "Design Modification for Reducing Silent Chain Annoying Noise." Journal of Mechanical Design 124, no. 4 (2002): 822–27. http://dx.doi.org/10.1115/1.1485093.

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In the design of driving systems, silent chains have extensively replaced roller chains thanks to annoying noise problems. For some types of cab-motorcycles, especially sheet-frame cabs, however, the annoying noise generated by silent chains is still not acceptable. In this study, silent chain noise of cab motorcycles is investigated first by order analysis and time-frequency (TF) analysis of measured noise, and second by the analysis of noise-origination, transmission and amplification via frame. The noise mechanism can therefore be precisely uncovered. Some experiments have been conducted to

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20

Rackov, Milan, Siniša Kuzmanović, Ivan Knežević, et al. "Analysis of Possible Concept Solutions of Chain Drives." MATEC Web of Conferences 290 (2019): 01018. http://dx.doi.org/10.1051/matecconf/201929001018.

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Possible concept solutions of chain drives are analysed in this paper in order to point out the benefits of chain drive application and, in particular, the possibility of application of multi-level chain drive. The paper also analyses the possibility of replacing the gear drives with chain drives, which, in the case of short-term drive and using the same direction of rotation, enables a slightly simpler drive solution. The paper doesn’t consider difference between the roller and gear chains application because these two types of chains can be used very successfully. Also, the possibility of us

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21

Que, Kexin, Xiaobo Zhuang, Yanyun Shi, et al. "Winding Characteristics and Signal Characterization of Roller During Threshing of Mature Rice." Agriculture 14, no. 12 (2024): 2332. https://doi.org/10.3390/agriculture14122332.

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As rice yield rises, the issue of broken axis windings in mature rice threshing drums is becoming increasingly severe. To disclose the winding characteristics and signal traits of the drums during the threshing process of mature rice, this paper undertakes an analysis of the winding characteristics and signals of the drums in rice with the assistance of a vibration test and analysis system. Since rice can lead to drum winding and shaft breakage, this paper alters the driving mode of the drums to exhibit the influence of rice on them. Firstly, the transfer characteristics of the frame need to b

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22

Metil’kov, S. A., and V. V. Yunin. "Influence of wear of a roller drive chain on transmission fitness." Russian Engineering Research 28, no. 8 (2008): 741–45. http://dx.doi.org/10.3103/s1068798x08080029.

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23

Adeyeri, M. K., and M. B. Adeyemi. "Development of Software Package in Designing Chain Drives as Engineering Transmission Element." Advanced Materials Research 62-64 (February 2009): 655–63. http://dx.doi.org/10.4028/www.scientific.net/amr.62-64.655.

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The paper work is aimed at using Microsoft Visual Basic 6.0 to develop window based design software that combines flexibility with adequate users interface for the design of chain drives as an engineering transmission element. The chain drives considered are of two types; silent and roller. The calculations are programmed either through ‘known torque’ or ‘through guess pitch value’. The design software combines computational with sketch template in a single process to generate the required parameters of the chain drives. The package was tested with a number of case studies and the results obta

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24

Saito, Ryoichi, Nao-Aki Noda, Yoshikazu Sano, et al. "Fatigue Strength Analysis and Fatigue Damage Evaluation of Roller Chain." Metals 8, no. 10 (2018): 847. http://dx.doi.org/10.3390/met8100847.

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This paper deals with the roller chain commonly used for transmission of mechanical power on many kinds of industrial machinery, including conveyors, cars, motorcycles, bicycles, and so forth. It consists of a series of four components called a pin, a bush, a plate, and a roller, which are driven by a sprocket. To clarify the fatigue damage, in this paper, the finite element method (FEM) is applied to those components under three different types of states, that is, the press-fitting state, the static tensile state, and the sprocket-engaging state. By comparing those states, the stress amplitud

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25

Lutsiv, Ihor, Taras Dubyniak, Oleksandra Manziy, and Stanislav Andreichuk. "Mathematical represantation of the branch kinematics of a transmission with descreteflexible connection." Scientific journal of the Ternopil national technical university 2, no. 106 (2022): 5–15. http://dx.doi.org/10.33108/visnyk_tntu2022.02.005.

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The paper deals with the mathematical model development of the kinematical behavior of the flexible transmission branch exemplified. A typical example of transmission with discrete-flexible connection can be considered as the movement of the drive elements of the chain. The use of chain gears as a drive for a wide range of technological machines with high requirements in order to ensure a certain law of motion of the executive bodies is the task of studying changes in its kinetic characteristics during operation. It is established that random deviations of the chain step from the nominal are t

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Liew, Yook Wah, Owen Matthews, Dzung Viet Dao, and Huaizhong Li. "Power Transmission Mechanism and Tribological Performance of Modern Bicycle Drivetrains—A Review." Machines 13, no. 1 (2025): 66. https://doi.org/10.3390/machines13010066.

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Bicycles are one of the most sustainable forms of transportation and sports available today, known for their environmental friendliness, cost-effectiveness, lightweight design, compactness, and health benefits. The efficiency and power transmission of bicycle drivetrains have emerged as crucial concerns for engineers, bicycle manufacturers, and both professional and amateur cyclists. However, research and publications related to bicycle drivetrain systems and their tribological performance are notably limited. There is a lack of systematic reviews on technological progress and recent research

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Han, Lixi, and Peipei Zhong. "Establishment of Chain Library Based on UG." Scientific and Social Research 6, no. 1 (2024): 103–13. http://dx.doi.org/10.26689/ssr.v6i1.5959.

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Sprocket chain drive is a common transmission mode in mechanical engineering that is widely used. However,due to the complexity of sprocket chain manufacturing, the three-dimensional design and motion simulation and analysisusing modern engineering software are time-consuming, and a great deal of calculations are needed. Therefore, it is ofgreat significance to develop a sprocket chain reuse library based on the modern engineering software Unigraphics. Amongthem, the sprocket design library was designed many years ago and published relevant papers (establishment of sprocketparametric modeling

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28

Wang, Xue Jun, Yi Lin Chi, Fu Yu Li, Li Gao, and Ping Xu. "Study on Parametric Design of Roller Conveyor Based on Top-Down Assembly Modeling Technology." Applied Mechanics and Materials 233 (November 2012): 361–64. http://dx.doi.org/10.4028/www.scientific.net/amm.233.361.

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To improve the quality and precision of the conveying equipment, in addition to strictly control the production craft, more important is to improve the design quality and the design efficiency. In this study, Solid Edge ST4 3 d modeling technology will be proposed to be used in synchronous roller conveyor design. A double chain transmission roller conveyor will be designed. In the process of design, synchronous modeling, parallel design, cooperative modeling technique and Top-down Assembly Modeling technology are combined with during the design. Modular design train of thought is used to consi

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Li, Yu, Zhong Tang, Ben Zhang, and Meilin Wang. "Vibration Transmission Characteristics and Detection Method of Bilateral Chain Drive of Multicylinders." Mathematical Problems in Engineering 2021 (May 29, 2021): 1–22. http://dx.doi.org/10.1155/2021/5582422.

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The transmission modes of multiple rotating parts on the combine harvester are complex and diverse, and the excitation vibrations are coupled with each other, which makes it difficult to dynamically balance the parallel rotating bodies on-site. In order to obtain the influence of the multicylinder transmission system on the vibration response and transmission characteristics of the whole machine providing an experimental basis for the overall balance of the multicylinder system, this paper tested and analyzed the vibration response and shaft vibration state of the system under different transm

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30

Zhang, Yiwen, Yuan Liu, and Zhongshan Lu. "Study on mechanical properties of two-dimensional roller cutter penetrating different particle systems." Journal of Physics: Conference Series 2951, no. 1 (2025): 012054. https://doi.org/10.1088/1742-6596/2951/1/012054.

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Abstract In order to study the mechanical properties of the disc cutter penetrating the particle system, a composite particle system model of the monodisperse particle system and soft and hard interlayered composite particle system was established based on the discrete element method, in which the monodisperse particle system was divided into hard particle system and soft particle system, combined with the complex network theory, and the crack propagation phenomenon and force chain were analyzed from the perspective of mesomechanics, and the distribution and evolution of the second invariant o

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31

Ye, Ganghong, and Ningxuan Shi. "Residual Life Prediction of Rotating Machinery Guided by Quantum Deep Neural Network." Scalable Computing: Practice and Experience 25, no. 4 (2024): 2183–89. http://dx.doi.org/10.12694/scpe.v25i4.2808.

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In order to avoid the low prediction rate and high evaluation rate in estimating the service balance life of rotating machinery, this paper presents a quantum gene chain encoded bidirectional neural network (QGCCBNN) for estimating the service balance life of rotating machinery. In QGCCBNN, quantum bidirectional transmission mechanism has been developed. In order to improve the global optimization ability and convergence speed, we have developed a quantum gene chain encoding method to transform the gradient descent into the data transmission and updating. Because of the advantages of QGCCBNN i

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Kurniawan, Richard, Michael Wijaya, Didi Widya Utama, and Agus Halim. "ANALISIS DAN RANCANG BANGUN SISTEM KERJA LINK PADA MESIN GERGAJI RADIAL 4 ARAH." POROS 14, no. 2 (2017): 139. http://dx.doi.org/10.24912/poros.v14i2.847.

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Abstract: Four directions radial chainsaw is a chainsaw that have four cutting tools with link as it’s power continuer and using roller chain transmission. This machine is designed to improve the efficiency of cutting time. Especially in the furniture industry. Still, the stacking of wood cutting work can reduce the production capabilities. This essay will discussed about the link and transmission working system that is used in the machine. The method used in this design is VDI 2221. The order of this design is starting from the calculation of the force that required to cut the wood, the force

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Luo, Ya Lan, and Chun Hua Zhao. "Design and Experimental Study of a Mower Conditioner Drive System." Applied Mechanics and Materials 488-489 (January 2014): 1169–72. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.1169.

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According to the forage of mountain region harvesting requirements, a transmission of montanic mower conditioner was designed. The drive system was combined with automatic tension sprocket and double chain wheel of upper and lower crushers, firstly, to realize the automatic regulation and relative motion of two flattening roller, secondly, the power was passed to reel device and achieved forage feeding function; the off-center slider crank mechanism drove the horizontal header to realize the grass cutting function. Through the theoretical analysis and experimental study of the system working p

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34

Chkhaidze, Тengiz, Gabriel Merabishvili, and Alexander Metreveli. "The Impact of Vibration Operational Reliability of Turning Mechanism of Gantry and Tower Cranes." Works of Georgian Technical University, no. 3(521) (September 29, 2021): 92–101. http://dx.doi.org/10.36073/1512-0996-2021-3-92-101.

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Impacts of vibration on operational reliability of turning mechanisms of gantry and rower cranes are considered. Besides that, the structural features of kinematic chain of drive, including gear transmission with internal large module teeth, roller bearing without retaining ring, excitement of torsional, bending low-frequency vibrations at operation in nominal mode of cargo lifting that causes the origination of of increasing friction moment and stop of turning mechanism are researched in this article. Moreover, the technological and structural solutions aimed on decreasing of excited vibratio

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35

Marpaung, Satria Buana, Din Aswan Amran Ritonga, and Ade Irwan. "ANALISA RISK PRIORITY NUMBER (RPN) TERHADAP KEANDALAN KOMPONEN MESIN THRESHER DENGAN MENGGUNAKAN METODE FMEA DI PT.XYZ." JiTEKH 9, no. 2 (2021): 74–81. http://dx.doi.org/10.35447/jitekh.v9i2.427.

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PT. XYZ is a palm oil factory (PKS) producing crude palm oil (CPO). PT. XYZ has not implemented an effective engine maintenance system. The maintenance system that has been implemented is corrective maintenance, which is making repairs when there is damage. In addition, it is also assisted with planned maintenance that is scheduled every week to clean production machines. Therefore it is necessary to identify machine components that are susceptible to damage (critical components) and it is necessary to take special care measures for critical machine components by implementing a predective main

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36

Wan, Qi, Chunyu Song, Yong Zhou, Ruiting Tong, Shangjun Ma, and Geng Liu. "Modeling and Analysis of the Flap Actuation System Considering the Nonlinear Factors of EMA, Joint Clearance and Flexibility." Aerospace 11, no. 6 (2024): 440. http://dx.doi.org/10.3390/aerospace11060440.

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The performance of the flap actuation system directly affects the control effect and the flight quality of an aircraft. The electromechanical actuator (EMA) and the linkage mechanism are important components of the system. In order to achieve the goals of good transmission accuracy and dynamic response, the influence of nonlinear properties in the transmission chain including the EMA and linkage mechanism should be considered. A co-simulation model at the system-level of the flap actuation system was developed, which takes nonlinear factors of the EMA, the impact dynamics of the linkage mechan

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Lengerov, Angel, Nadya Arabadzieva, and Silvia Salapateva. "DETERMINATION OF AXIAL FORCES OF TOOL ELEMENTS FOR PLASTICALLY STRENGTHENING HOLE MACHINING." ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 4 (June 8, 2025): 181–84. https://doi.org/10.17770/etr2025vol4.8455.

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When machining holes by burnishing, there is a direct relationship between the main parameter - the applied force and the geometric elements of the deforming rollers. This relationship can be determined by considering the force balance of the tool during operation. It is determined by the accuracy of the workpiece positioning and tool adjustment, and is expressed in the unevenness of the allowance, both in the transverse and in the proper section of the workpiece. The nature of the errors obtained and their magnitude depend, in addition to the accuracy of the relative position of the workpiece

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Bahadirov, Gayrat, Zarnigor Rakhimova, Salikh Tashpulatov, Igor Tyurin, and Kurbonali Holoqov. "Influence of vertical shaft machine parameters on increasing productivity of the processed product." E3S Web of Conferences 515 (2024): 02018. http://dx.doi.org/10.1051/e3sconf/202451502018.

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In this article, the influence of the force pulling the base plate of the vertical shaft machine up along the chain on the pair of compression shafts and the dependence of the moisture squeezed from the semi-finished product being processed on the diameter of the shafts are experimentally studied. The scientific novelty of the research is the development of an improved experimental design of a vertical type shaft machine that flattens the folded areas of wet semi-finished products and compresses excess moisture. The practical significance of the results of the research is explained by the deve

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Troedsson, I., and L. Vedmar. "A method to determine the dynamic load distribution in a chain drive." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 215, no. 5 (2001): 569–79. http://dx.doi.org/10.1243/0954406011520959.

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This paper presents a method to calculate the forces in a chain and, thus, the resulting load distribution along the sprockets in a chain transmission working at a moderate or high speed. When the chain drive is loaded, the rollers that contact the sprockets will move along the flanks to different height positions. There are mainly two different ways to determine the actual positions: to assume the positions or to use force equilibrium and to calculate the positions. To find the correct solution the geometry and the force equilibrium are used which will give each roller's position, along the f

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Tong, Hong Wei, Wen Yi Liu, Guang Jie Huang, and Qing Liu. "Effects of Thermo-Mechanical Treatment on the Microstructure of AA7085 Aluminum Alloy." Materials Science Forum 794-796 (June 2014): 1193–98. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.1193.

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The microstructure of pre-aged AA7085 rolled plate was studied by means of hardness tests, optical microscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction and electrical conductivity tests. The results show that supper refined and homogeneous precipitates were formed during pre-aging, but the hardness of the alloy was still relatively low. There occurred a large number of dislocations when the warm deformation was introduced, and the size of the intragranular precipitates firstly increases and then decreases and then increases with the dislocation density

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Anderson, Sir. "MODIFIKASI MESIN PENGUPAS KULIT KOPI KAPASITAS 241 KG/JAM." Jurnal Ilmiah Poli Rekayasa 18, no. 1 (2022): 20. http://dx.doi.org/10.30630/jipr.18.1.245.

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Processing of coffee skin peelers generally still uses manual or semi-mechanical peelers and to overcome this, a mechanical coffee peeler driven by a gasoline motor is needed. The purpose of modifying this coffee skin peeler machine is to find the perfect tools that have been made previously. This machine modification is expected to help the process of peeling the coffee skin so that it can improve the quality of the coffee. The implementation method for modifying the coffee peeler machine starts with the plan, preparing the construction materials for machines, gasoline motors, gears and chain

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Myers-Hansen, James L., Benjamin Abuaku, Muyiwa K. Oyebola, et al. "Assessment of antimalarial drug resistant markers in asymptomatic Plasmodium falciparum infections after 4 years of indoor residual spraying in Northern Ghana." PLOS ONE 15, no. 12 (2020): e0233478. http://dx.doi.org/10.1371/journal.pone.0233478.

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Background Drug resistance remains a concern for malaria control and elimination. The effect of interventions on its prevalence needs to be monitored to pre-empt further selection. We assessed the prevalence of Plasmodium falciparum gene mutations associated with resistance to the antimalarial drugs: sulfadoxine-pyrimethamine (SP), chloroquine (CQ) and artemisinin combination therapy (ACTs) after the scale-up of a vector control activity that reduced transmission. Methods A total of 400 P. falciparum isolates from children under five years were genotyped for seventeen single nucleotide polymor

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Ponomarenko, Nataliya, Vitalii Yaropud, and Yevhen Lepet. "RESEARCH OF CONSTRUCTIVE-TECHNOLOGICAL PARAMETERS OF WORKING BODY FOR SCATTERING BULK MATERIALS." ENGINEERING, ENERGY, TRANSPORT AIC, no. 3(110) (October 30, 2020): 95–102. http://dx.doi.org/10.37128/2520-6168-2020-3-10.

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Machines used in world practice for surface application of mineral fertilizers are often equipped with centrifugal devices with vertical or horizontal location of the axis of rotation. Having high productivity and reliability of technological process, they cannot always provide reception of a necessary dose and uniformity of scattering of fertilizers on width. In Ukraine, currently produced machines for the application of mineral fertilizers, which we have not previously produced. Since about 2/3 of all available mineral fertilizers, as well as most of the limestone and gypsum-containing mater

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Nakazawa, Masaru. "Special Issue on Handling of Flexible Object." Journal of Robotics and Mechatronics 10, no. 3 (1998): 167–69. http://dx.doi.org/10.20965/jrm.1998.p0167.

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It is difficult to introduce highly versatile automation using robots to handling deformable objects such as thread, cloth, wire, long beams, and thin plates in plant production processes, compared to the handling of rigid objects. Office equipment handles deformable objects such as paper and plastic. Problems unique to these objects is caused by speeding up such equipment and demand for upgrading its accuracy. In agriculture and medical care, automatic, intelligent handling of deformable objects such as fruit and animals has long been desired and practical systems sought. Deformable objects w

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Martynenko, H. A. "Relevance of food bacterial zoonoses in the Dnipropetrovsk Region (Ukraine) during 2020." Journal for Veterinary Medicine, Biotechnology and Biosafety 7, no. 3 (2021): 46–53. http://dx.doi.org/10.36016/jvmbbs-2021-7-3-6.

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When the world is facing an unprecedented COVID-19 pandemic, the importance of animal disease surveillance has become apparent. A significant proportion of new and existing human diseases are zoonoses. Microbiological researches remain relevant today. They guarantee the quality of food raw materials and products, as well as identify sources of infection. The aim of our work was to study the spread of foodborne bacterial zoonoses in the Dnipropetrovsk region during 2020. The study used the methods provided by DSTU ISO 6887-2:2005, DSTU ISO 4833:2006, DSTU ISO 4832:2015, DSTU EN 12824:2004, DSTU

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Sivakumar, Kanniyappan, Mallina Venkata Timmaraju, and Rajappa Gnanamoorthy. "Lightweight design of steel sprocket for roller chain drive using explicit dynamic simulation." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, April 8, 2024. http://dx.doi.org/10.1177/09544062241242652.

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Roller chain drives are frequently applied in a variety of machinery for mechanical motion and power transmission. The roller engagement location on the sprocket tooth contour and the resulted contact behavior is governed by the wear of components and pretension of the chain. Therefore, the influence of extension of chain resulted from wear and pretension of chain on contact behavior was investigated numerically using explicit dynamics module of ABAQUS software. The contact angles evaluated from the numerical simulation were assessed relative to those obtained from the basic rigid body analyti

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Kanniyappan, Sivakumar, Mallina Venkata Timmaraju, and Gnanamoorthy Rajappa. "Numerical studies on contact behavior in polymer composite sprocket - Roller chain drive under dynamic conditions." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, May 12, 2022, 095440622210949. http://dx.doi.org/10.1177/09544062221094928.

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The unique properties along with ease of manufacturing make short fiber reinforced polyamide 66 composites ideal for sprockets used in low positive power transmission. An explicit dynamic finite element simulation of short fiber reinforced polyamide 66 composite sprocket—roller chain drive was carried out. The sprocket was approximated as a plane stress body and roller was considered as a rigid circle. The contact force extracted from the numerical simulation was validated with the analytical results for a standard chain. The deviations in the pitch of the chain produced a varied dynamic conta

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Li, Jiabao, Lichi An, Yabing Cheng, and Haoxiang Wang. "Research on sound quality of roller chain transmission system based on multi-source transfer learning." Scientific Reports 14, no. 1 (2024). http://dx.doi.org/10.1038/s41598-024-62090-3.

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AbstractTo establish the sound quality evaluation model of roller chain transmission system, we collect the running noise under different working conditions. After the noise samples are preprocessed, a group of experienced testers are organized to evaluate them subjectively. Mel frequency cepstral coefficient (MFCC) of each noise sample is calculated, and the MFCC feature map is used as an objective evaluation. Combining with the subjective and objective evaluation results of the roller chain system noise, we can get the original dataset of its sound quality research. However, the number of hi

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Djuraev, Anvar Djuraevich, Kozimjon Komiljonovich Yuldashev, and Oybek Abdumannob o'g'li Teshaboyev. "Production tests of advanced screw conveyor and chain transmission for lint transportation." February 27, 2023. https://doi.org/10.5281/zenodo.7680477.

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The article shows the transmission scheme of a screw with a wavy (zigzag) shape of the surface of rotation and chain transmission with a compound roller, as well as an analysis of their structural properties. The results of experimental studies conducted to determine the operability of a chain drive with a composite roller installed in the drive mechanism of a new-design screw conveyor are described. It also describes the process of cleaning small and large litter of various kinds from the composition of lint on a recommended design based on experimental results. Development of an efficient st

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KUMAR, B. PRAVEEN. "DESIGN AND ANALYSIS OF SPROCKET FOR FORMULA STUDENT VEHICLE." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 06, no. 02 (2022). http://dx.doi.org/10.55041/ijsrem11731.

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In a Formula student vehicle, the sprocket is one of the important components in the chain drive which transmits power from the engine output shaft to the drive shaft. To ensure efficient power transmission, sprocket should be designed and manufactured properly. In this study the driven sprocket of the formula student vehicle has been designed in Solid works and analysed using FEA. ANSYS software has been used to perform Static analysis to calculate the stresses induced and deformations in the sprocket. And then the Fatigue analysis has been done to determine the Fatigue life and damage. The s

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