Relevant bibliographies by topics / Shafting

Academic literature on the topic 'Shafting'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 July 2024

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Journal articles on the topic "Shafting"

1

Wang, Wuchang, Yizi Shang, and Zhifeng Yao. "A Predictive Analysis Method of Shafting Vibration for the Hydraulic-Turbine Generator Unit." Water 14, no. 17 (August 31, 2022): 2714. http://dx.doi.org/10.3390/w14172714.

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The shafting vibration for the Hydraulic-Turbine Generator Unit (HGU) inevitably affects the safe and stable operation of the Units. Excessive shafting vibration could cause fatigue damage of materials, which eventually leads to malfunction of HGU and even results in damage accidents in serious cases. Generally speaking, the vibration is mainly generated from the high-speed rotation of the shafting, and mechanical, hydraulic, and electrical factors as the vibration exciting sources may be coupled all to cause a vibration of the HGU, so it is necessary to take the whole shafting as a specific object of study. In recent years, many scholars have conducted much research on them and their results are focused more on how to control the influence of external excitation sources of vibration, but still lack consideration of the shafting’s internal mechanism of vibration. In this paper, a predictive analysis method is proposed to reveal the internal mechanism of vibration. Starting from the analysis of natural vibration characteristics of the shafting, this study establishes the finite element calculation model of the shafting of the HGU based on the finite element analysis method. By selecting appropriate research methods and calculation procedures, the modal analysis of the dynamic characteristics of the shafting structure is carried out. Finally, the first ten-order natural vibration characteristics and critical rotational speed of the shafting structure are successfully calculated, and the results conform to the basic laws of shafting vibration. In addition, by comparing the relationship between rotational frequency such as the rated speed, runaway speed, and critical speed of the shafting, the possibility of resonance of the HGU is analyzed and predicted, and then some suggestions for optimization design such as increasing the shafting’s stiffness and balancing its mass distribution are proposed. Therefore, this study provides a basis for guiding the structural design and optimization of the shaft system in engineering, and avoids the resonance caused by the excitation source such as rotational frequency, thereby ensuring the safe and stable operation of the HGU.
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Changyou, Huang, and Hu Jianzhong. "Theoretical Study on the Nonlinear Dynamic Response of Propulsion Shafting under Time-Varying Hull Motion." Journal of Physics: Conference Series 2542, no. 1 (July 1, 2023): 012021. http://dx.doi.org/10.1088/1742-6596/2542/1/012021.

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Abstract Due to the effect of external elements such sea waves and sea wind, the ship will unavoidably produce 6 degrees of freedom of movement, with roll motion being the most likely to occur and having the greatest impact. This paper establishes a general dynamic model of the propulsion shafting based on Timoshenko beam theory, the concentrated mass method, and Lagrange’s equation under roll motion and translation motion to study the dynamic behaviour of the propulsion shafting under roll motion and translation motion. FFT, axis trajectory, Poincaré map, and 3D spectrogram were utilized to examine the impact of motion amplitude, frequency, and rotation speed on the propulsion shafting’s dynamic response. The results demonstrated that base motion significantly affects the dynamics of the propulsion shafting, resulting in many components appearing in the system’s response spectrum, and the system changes from quasi-periodic to chaotic motion when base motion amplitude or frequency rises.
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Liu, Shi, Cong Wang, Bing Li, Chang Chen, and Dan Mei Xie. "Sensitivity Analysis of 1000MW USC Units Shafting Torsional Vibration Based on ANSYS." Applied Mechanics and Materials 226-228 (November 2012): 162–65. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.162.

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To calculate a shaftings natural frequency of torsional vibration is one of the most important tasks in turbo-generators design, manufacture and frequency adjusting process. The sensitivity analysis of shafting structural parameters impact on the torsional vibration characteristics has important significance in reducing the amplitude of torsional vibration and ensuring the turbo-generators safe operation. In this paper, a 1000MW USC unit was taken as a research object to analyze the shaftings sensitivity to moment of inertia.
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Wen, Xiaofei, Wenjie Meng, Xiaoxiao Sun, and Ruiping Zhou. "A Composite Method of Marine Shafting’s Fault Diagnosis by Ship Hull Vibrations Based on EEMD." Shock and Vibration 2022 (March 30, 2022): 1–11. http://dx.doi.org/10.1155/2022/1236971.

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The fault diagnosis is always a key issue in the security field of marine propulsion system. There are obvious problems like the unsteady working of sensors, distortion of original data, and ambivalent feature information from marine shafting’s vibration or motion. It is therefore critical to develop a more effective method to identify the fault information so that the safety of marine propulsion system can be pre-estimated. Hence, a composite method which is based on the ensemble empirical mode decomposition (EEMD) and coupled with the autocorrelation method (AM), the fast Fourier transform (FFT), is mixed and applied to identify the fault information of marine shafting during its operating by hull vibration. The contrastive analysis of the three methods and fault feature study are then conducted to assess the effectiveness of the proposed method thoroughly and validated by the author previously. The research indicates that the composite method is available to fault diagnosis of marine shafting by hull vibration which coupled the shafting vibration with fault feature.
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Deng, Yibin, Yuefan Li, Hanhua Zhu, and Shidong Fan. "Displacement Values Calculation Method for Ship Multi-Support Shafting Based on Transfer Learning." Journal of Marine Science and Engineering 12, no. 1 (December 22, 2023): 36. http://dx.doi.org/10.3390/jmse12010036.

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Deviations between the design and actual shafting occur due to limitations in ship construction accuracy. Consequently, accurately obtaining the relationship between the actual shafting load and displacement relationship based on the design shafting becomes challenging, leading to inaccurate solutions for bearing displacement values and low alignment efficiency. In this research article, to address the issue of incomplete actual shafting data, a transfer learning-based method is proposed for accurate calculation of bearing displacement values. By combining simulated data from the design shafting with measured data generated during the adjustment process of the actual shafting, higher accuracy can be achieved in calculating bearing displacement values. This research utilizes a certain shafting as an example to carry out the application of the bearing displacement value calculation method. The results show that even under the action of shafting deviation, the actual shafting load and displacement relationship model can become more and more accurate with the shafting adjustment process, and the accuracy of bearing displacement values calculation becomes higher and higher. This method contributes to obtaining precise shafting adjustment schemes, thereby enhancing alignment quality and efficiency of ship shafting.
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Liang, Xing Xin, Zheng Lin Liu, and Jiao Liu. "Study of Frequency Converter Motor Selection Method of Shafting Test Bed." Advanced Materials Research 912-914 (April 2014): 922–26. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.922.

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The rotary inertia, speed, acceleration of shafting and the friction coefficient of rubber bearings have an important influence on the calculation of shafting resistance moment, related to the selection rationality of driving motor. In order to guarantee load startup and normal operation of the shafting, by analysing shafting rotary inertia, bearing support force and friction coefficient, calculated resistance moment of the shafting, established the mathematical model of shafting equivalent resistance moment and motor rotational speed, compared the output moment of motor with shafting equivalent resistance moment, so that determined the correct motor model.
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Lei, Junsong, Ruiping Zhou, Hao Chen, Guobing Huang, Yakun Gao, and Qingcao Yang. "Effects of Ship Propulsion Shafting Alignment on Whirling Vibration and Bearing Temperature Response." Mathematical Problems in Engineering 2021 (September 27, 2021): 1–10. http://dx.doi.org/10.1155/2021/8353844.

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Ship’s propulsion shafting is one of the main sources of ship vibration and noise. The shafting, whirling vibrations, and alignment are important factors that affect the comfort, stability, and reliability during a ship’s navigation. However, the mechanism of the interacting of the both factors is not fully revealed. In this paper, the effect of shafting alignment on whirling vibration and the bearing temperature response is studied by experiment. The test scheme is designed reasonably according to the theoretical analysis. The results show that the horizontal component of the shafting whirling vibration can be effectively reduced by adjusting the shafting alignment state while the vertical component is not. The shafting axis balancing position (SABP) slightly moves upward in high speed, which should be considered in the dynamic alignment design of the shafting, especially for the high-speed shafting. Little ABSB (the angle between the shafting centre line and the No. 1 bearing centre line) is beneficial to the stable operation of shafting, while appropriately increasing the ABSB and bearing load is beneficial to reducing the shafting whirling vibration. By balancing the relationship between bearing load and ABSB, the performance of whirling vibration and bearing temperature response can be optimized.
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Liu, Jinlin, Zheng Gu, and Shuyong Liu. "Research on MDO of Ship Propulsion Shafting Dynamics Considering the Coupling Effect of a Propeller-Shafting-Hull System." Polish Maritime Research 30, no. 1 (March 1, 2023): 86–97. http://dx.doi.org/10.2478/pomr-2023-0009.

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Abstract Dynamic designs for ship propulsion shafting can be categorised as complex multi-disciplinary coupling systems. The traditional single disciplinary optimisation design method has become a bottleneck, restricting the further improvement of shafting design. In this paper, taking a complex propulsion shafting as the object, a dynamic analysis model of the propeller-shafting-hull system was established. In order to analyse the coupling effect of propeller hydrodynamics on shafting dynamics, the propeller’s hydrodynamic force in the wake flow field was calculated as the input for shafting alignment and vibration analysis. On this basis, the discipline decomposition and analysis of the subdisciplines in design of shafting dynamics were carried out. The coupling relationships between design variables in the subdisciplines were studied and the Multi-disciplinary Design Optimisation (MDO) framework of shafting dynamics was established. Finally, taking the hollowness of the shaft segments and the vertical displacement of bearings as design variables, combined with the optimal algorithm, the MDO of shafting dynamics, considering the coupling effect of the propeller-shafting-hull system, was realised. The results presented in this paper can provide a beneficial reference for improving the design quality of ship shafting.
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Xiao, Nengqi, Ruiping Zhou, Xiang Xu, and Xichen Lin. "Study on Vibration of Marine Diesel-Electric Hybrid Propulsion System." Mathematical Problems in Engineering 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/8130246.

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This study analyzes the characteristics of hybrid propulsion shafting and builds mathematical models and vibration equations of shafting using the lumped parameter method. Main focus is on the asymmetric double diesel propulsion shafting operation process and the impact of the phase angle and motor excitation on torsional vibration of shafting. Model result is validated by testing results conducted on double diesel propulsion shafting bench. Mathematical model and model-building methods of shafting are correct.
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Shuo, Chen, and Zhang Heng. "Vibration analysis of ship propulsion shafting bearings." E3S Web of Conferences 233 (2021): 01007. http://dx.doi.org/10.1051/e3sconf/202123301007.

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The ship power propulsion system is the "heart" of the ship, and the ship propulsion shafting is the core unit of the ship power propulsion system, and it is an indispensable part of the ship's propulsion torque and thrust transmission. The operating status of the propulsion shafting directly affects the operating conditions of the ship, and even the life of the ship. Bearing load is one of the most important manifestations of the operating state of the propulsion shafting. Focusing on changes in the bearing load can better study the operating state of the propulsion shafting. The research on the steady-state load of ship propulsion shafting meets the needs of ship development and has great value for practical engineering applications. This paper takes the ship propulsion shafting-oil film-bearing structure system as the research object. Through the steady-state load mathematical model of ship propulsion shafting bearings, it reveals the coupling relationship among ship propulsion shafting bearing load, oil film force, and journal position, and establishes the ship The steady-state load calculation method of the propulsion shafting bearings solves the basic theoretical problems of modeling and analysis of the steady-state operating state of the ship's propulsion shafting, and provides theoretical support for the safety prediction, management and evaluation of the ship's propulsion shafting operation.
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Dissertations / Theses on the topic "Shafting"

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Ilic, Slobodan Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "Methodology of evaluation of in-service loads applied to the output shafts of automatic transmissions." Awarded by:University of New South Wales. School of Mechanical and Manufacturing Engineering, 2006. http://handle.unsw.edu.au/1959.4/30172.

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This work presents a novel methodology for evaluation of in service loads applied to the output shafts of automatic transmissions. It also presents a novel methodology of data reduction for shaft load signals as an alternative to the cycle counting methods. Current durability testing of automatic transmission output shafts uses 50 000 stall torque cycles from zero to wide open throttle. In the majority of cases, these requirements lead to an over design that can result in an unnecessarily bulky transmission system. As a solution to this problem a novel methodology for evaluation of loads applied to the output shafts of automatic transmissions was developed. The methodology is based on real world loading conditions and therefore leads to a more realistic estimation of the fatigue life of shafts. The methodology can be used as a tool for shaft optimisation in different drive conditions. Using the developed methodology the effects of different road conditions on the fatigue life of a transmission output shaft were compared. Four routes having differing driving conditions were investigated and of those routes, the route with most stop-start events resulted in the greatest reduction in fatigue life. A novel methodology of data reduction for shaft load signals was also developed. The methodology is based on knowledge of the bandwidth and dynamic range of the expected in-service load signal. This novel methodology allows significant reduction of the volume of data to be acquired. It preserves the time sequence of peaks and valleys of the signal, which is vital in the case of fatigue analysis. This is in contrast to current methods based on cycle counting. Cycle counting methods achieve high data reduction but do not preserve the time sequence of the signal. The developed novel methodology has been validated on the newly developed data acquisition system capable of real time data acquisition and compression of shaft torque signal. The performed tests show that the proposed one-channel low cost system equipped with 1 GB compact flash card can store well over 10 000 hrs of load history.
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Andruet, Raul Horacio. "Behavior of a cracked shaft during passage through a critical speed." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-11242009-020021/.

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Suherman, Surjani. "Response of a cracked rotating shaft with a disk during passage through a critical speed." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09292009-020146/.

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Sverko, Davor. "Torsional-axial coupling in the line shafting vibrations in merchant ocean-going ships." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0002/MQ44806.pdf.

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Mohamed, Alhade Abdossllam. "Monitoring cracks in a rotating shaft." Thesis, University of Aberdeen, 2012. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=186894.

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Condition monitoring of rotating shafts is gaining importance in industry due to the need to increase machine reliability and decrease the possible loss of production due to machine breakdown. In this work, the use of vibration signals for the detection of a crack within a shaft was investigated. The research involved the measurement of vibration signals during laboratory tests on a long rotating shaft rig. The focus of the experimental work was on the effect of cracks on the dynamics and the initiation and growth of cracks in the shaft. Measurements were taken from the shaft system both with simulated cracks (notches) cut at 45° and 90° to the shaft axis and with real propagating cracks initiated by a pre-crack cut. All defects were located at the mid- point along the shaft. The vibration responses and stresses were measured for different depths of crack. The vibration responses of the three different defects were compared using PSDs of the data to identify the change in position and magnitude of the peaks in the spectrum under each defect. Experiments to study the effect of defect depth at different shaft rotation speeds were also carried out. Finally, a shaft with a breathing crack (continuously opening and closing as the shaft rotates) was also studied experimentally, with the crack growing under normal steady state operating conditions. After completing the experiment work, the shaft was broken and the type of fracture studied. The results for both simulated and actual crack growth showed that vibration frequencies decreased as a crack progressed, indicating the possibility of using the vibration signal for crack detection. A significant relationship was found between the stage of crack growth and the vibration results. A finite element (FE) model was constructed to explore the relationship between the natural frequencies and crack depth and position along the shaft and to explain and validate the results of the experimental work. The FE model showed similar trends to the experimental results and also allowed the effect of different crack positions to be explored. The PSD data was fed into an artificial neural network after a feature extraction procedure was applied to significantly reduce the quantity of data whilst at the same time retaining the salient information. Such an approach results in a considerably reduced training time for the network due to the reduced complexity. The proposed scheme was shown to successfully identify the different defect levels. This method greatly enhances the capacity of an automated diagnostic process by linking increased capability in signal analysis to the predictive capability of the artificial neural network.
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Blanding, James Michael. "An analytical study and computer analysis of three-dimensional, steady-state vibration of multishaft geared-rotor systems." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/54198.

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A unique multifrequencied transfer matrix method performs three-dimensional harmonic, steady-state response calculations on geared-rotor systems. The full six degrees-of-freedom method includes physical branching to accommodate multiple shafting and frequency branching to simultaneously accommodate multiple frequencies and their interdependence resulting from time-varying mesh stiffness. Areas of emphasis include development of a modified transfer matrix to handle multiple frequencies and shafting; description of the time-varying stiffness tensor representing the involute spur gear mesh based on bending, shear, compression, and local contact deformation; development of the mesh transfer matrix; development of an automatic system solver to allow the engineer to analyze systems of arbitrary construction; and the development of a matrix solver to efficiently handle large systems. A computer analysis demonstrates the significance of terms included in the stiffness evaluation as compared with less rigorous treatment in the literature. An analytical example problem illustrates the automated model generation through complete rotor system dynamic response analysis produced by the current work with special attention to the significance of parametric excitation due to the gear mesh.
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Varonis, Orestes J. "Eddy Current Characterization of Stressed Steel and the Development of a Shaft Torque Eddy Current System." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1221065617.

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Nazari-Shafti, Mir Timo Zadegh [Verfasser], and Thomas [Akademischer Betreuer] Fischer. "Empfänglichkeit hämatopoetischer Zelllinien mesenchymaler CD34 und CD14 Stammzellen des Fettgewebes für eine Infektion mit dem humanen Immunschwächevirus Typ 1 und deren potentieller Nutzen in Prävention und Therapie der HIV-Infektion / Mir Timo Zadegh Nazari-Shafti. Betreuer: Thomas Fischer." Magdeburg : Universitätsbibliothek, 2013. http://d-nb.info/105463789X/34.

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He, Iau-Jung, and 何耀宗. "Study on Optimum Shafting Curve and Bearing Position of the Shafting System for Merchant Ships." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/58419684983931033236.

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碩士
國立臺灣海洋大學
機械與機電工程學系
94
This study provided an optimum searching method for designing the shafting system. The purpose was to avoid design errors which cause damages to the shafting system. This method utilized Computer-Aided Engineering (CAE) of the Finite Element Method to analyze strengths of the shafting system. It is a precise calculating method which can replace some traditional methods, such as three moment equation method. A simple shafting system model was used to study though three moment method and finite element method. After comparing two results, showed that the maximum deviation of reaction force is 6.84 %, and the minimum is 2.1 %. Computer-Aided Design (CAD) software was utilized to change the curve (offset of bearings) of the shafting system. Then the models were provided for CAE software to analyze individually. Finally, a set of optimum offset bearing positions were found. Comparing the outcome above-mentioned with the shipyard’s original design values, the maximum offset deviation was 0.44 millimeter on the crank shaft, and the minimum was 0.36 millimeter on the intermediate shaft. According to above results, the CAD and CAE optimum searching method has proved that its technical capability as design of shafting system for large merchant ships.
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YANG, LI-WEI, and 楊立瑋. "Naval Propulsion Shafting Design And Case Studies." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/9x6hm3.

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碩士
國立高雄應用科技大學
模具系碩士在職專班
104
This study concentrates on propulsion shafting design and parameters study for MIL-STD-2189 that is a document of design methods for naval shafting. The thesis gets relevant data results and performs case research analysis along with verification for naval propulsion shafting design. Bearing stress and shafting load are designed in the safety range to prevent the shaft and propeller with unnecessary vibration. The study provides reference data for future naval ship propulsion system design and configuration modification. The results for both submarines and surface ships shafting are validated by case studies and proven feasible after the validation. It should be noted that in addition to obtaining the required relevant parameters, boat and environmental conditions in paragraph should be the same as that of the document providing, otherwise the expression will not be validated.
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Books on the topic "Shafting"

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Popov, A. P. Zubchatye mufty v sudovykh agregatakh. Leningrad: "Sudostroenie", 1985.

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Verhoff, Vincent G. An applicational process for dynamic balancing of turbomachinery shafting. [Washington, D.C: National Aeronautics and Space Administration, 1990.

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Vertrieb, VDI-Gesellschaft Entwicklung Konstruktion, ed. Wellenkupplungen in Antriebssystemen: Problemlösungen, Erfahrungen, Trends : Tagung Baden-Baden, 24. und 25. November 1987. Düsseldorf: VDI Verlag, 1987.

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Sakharov, A. B. Zashchita sudovykh valoprovodov ot krutilʹnykh kolebaniĭ. Moskva: "Transport", 1988.

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Institution of Mechanical Engineers (Great Britain). Fluid Machinery Committee., ed. Shaft sealing in centrifugal pumps: Papers presented at a seminar. London: Published by Mechanical Engineering Publications for the Institution of Mechanical Engineers, 1992.

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Shchukin, V. I͡A. Intensifikat͡sii͡a proizvodstva valov v mashinostroenii. Minsk: "Nauka i tekhnika", 1988.

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American, Petroleum Institute Manufacturing Distribution and Marketing Dept. Shaft sealing systems for centrifugal and rotary pumps. Washington, D.C: American Petroleum Institues, 1994.

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Hopkins, R. Bruce. Design analysis of shafts and beams: A practical approach. 2nd ed. Malabar, Fla: R.E. Krieger Pub. Co., 1987.

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Harlon, Tommy B. A millwright's guide to motor/pump alignment. 2nd ed. New York, NY: Industrial Press, 2008.

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Harlon, Tommy B. A millwright's guide to motor/pump alignment. 2nd ed. New York, NY: Industrial Press, 2008.

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Book chapters on the topic "Shafting"

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Qin, Wenyuan, Zhenguo Zhang, Suining Hu, and Zhiyi Zhang. "Investigation on Friction-Excited Vibration of Flexibly Supported Shafting System." In Nonlinear Dynamics, Volume 1, 61–65. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29739-2_7.

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Bovsunovsky, A., E. Shtefan, and V. Peshko. "Circumferential Crack Growth in Steam Turbine Shafting Because of Torsional Vibrations." In Proceedings of the UNIfied Conference of DAMAS, IncoME and TEPEN Conferences (UNIfied 2023), 705–14. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-49421-5_57.

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Zhu, Jiangbo, Xi Chen, Qingyuan Wan, and Xiaoshen Ning. "Study on the Shafting Vibration by Non-newtonian Fluid Lubrication Layer." In Lecture Notes in Mechanical Engineering, 1899–912. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8048-2_128.

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Xie, Danmei, Hengliang Zhang, Chuan Dong, Zhanhui Liu, and Zhuchang Yang. "A Theoretical Investigation on Experimental Model of Torsional Vibration for Turboset Shafting." In Challenges of Power Engineering and Environment, 568–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-76694-0_105.

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Huang, W. T., H. Zhai, Y. Lei, and W. J. Wang. "Fault Location Method of Multiple Bearings in Shafting Based on SPWVD-CNN." In Proceedings of MEACM 2020, 205–14. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67958-3_23.

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Chen, Wei, Kangwei Zhu, and Haiyu Zhang. "A Review of Longitudinal Vibration and Vibration Reduction Technology of Propulsion Shafting." In Communications in Computer and Information Science, 540–53. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1549-1_43.

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Bovsunovsky, Anatoliy. "Effect of Abnormal Operation of Turbine Generator on the Resource of Steam Turbine Shafting." In Lecture Notes in Mechanical Engineering, 247–54. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93587-4_26.

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Sun, Yu, Xuyang Cao, Yunbo Yuan, Guang Zhao, Song Ma, and Haofan Li. "Fault Simulation and Experimental Validation of Accessory Transmission System." In Lecture Notes in Mechanical Engineering, 405–21. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1876-4_31.

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AbstractAs an important part of the aero-engine, the accessory transmission system affects the operation status of the engine, and it is of great significance to carry out fault mechanism analysis and fault identification. This paper takes a certain type of aero-engine accessory transmission system as the research object, flexes the box using ANSYS, establishes a rigid-flexible coupling model under normal working conditions and fault conditions through ADAMS, and studies the vibration characteristics in single fault and multi-fault combination modes, such as unbalance of the shaft system, gear misalignment and gear broken tooth. Considering different load loading conditions, the dynamic simulation of the transmission system is carried out, the shafting displacement and box acceleration response are extracted, the time–frequency domain feature information of the vibration signal is analyzed, and the fault characteristics and fault types are corresponded one-to-one. The test bench for the principle prototype of the accessory transmission system is designed and built, and the experimental research is carried out. The results show that the simulation results have good consistency with the principle prototype test results, which verifies the rationality of the simulation model.
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HENDRICKSON, A. "Shafting." In Mechanical Design for the Stage, 187–200. Elsevier, 2007. http://dx.doi.org/10.1016/b978-0-240-80631-0.50020-x.

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"shafting." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 1208. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_192470.

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Conference papers on the topic "Shafting"

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Venturini, Giovanni, and Alberto Cervone. "Shafting System Design." In SNAME 6th Propeller and Shafting Symposium. SNAME, 1991. http://dx.doi.org/10.5957/pss-1991-17.

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The design of a marine system, divided into three steps, is examined. Steady, alternating forces and moments, generated by the propeller are discussed and their calculation method is shown. Optimization criteria with respect to shaft strength as well as longitudinal and vertical bearings position are given. Longitudinal, lateral, torsional vibration problems and their influence on shafting design are discussed. A new method for the propeller shaft diameter calculation, useful when the bearing forces versus the angular position of the shaft are available, is presented.
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Reed, F. Everett, Jonathan C. De Hart, Moses W. Hirschkowitz, Patrick O. Prendergast, Steven Stroubakis, Richard T. Woytowich, and Ivan Zgaljic. "Lateral Vibration of Shafting." In SNAME 7th Propeller and Shafting Symposium. SNAME, 1994. http://dx.doi.org/10.5957/pss-1994-005.

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This paper is presented as a precursor of a SNAME, M20 Ship Machinery Vibration Guideline for predicting the lateral shaft vibration amplitudes and forces on single and multiple screw ships. Comments from the attendees of the Symposium are sought to take this as useful as possible for the profession.
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3

Wen, Xiaofei, Ruiping Zhou, Qiang Yuan, and Xianming Hu. "Co-relation between Shafting Vibration Performances and Shafting Mechanics Characters in Large Ships." In 5th International Conference on Civil Engineering and Transportation. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/iccet-15.2015.365.

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4

Huang, Qianwen, Cong Zhang, Jia Liu, and Xinping Yan. "Transient Analysis of Coupled Longitudinal and Transverse Vibration of Large Container Ship Propulsion Shafting." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-42389.

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Marine propulsion shafting connects between the host and the propellers to promote the movement of ship, varieties of Different coupled vibrations forms produce different kinds of coupled vibrations, the coupled vibration of propulsion shafting poses serious threat to the safety and reliability of the sailing of ship. Considering the uncertainty of the experimental test for propulsion shafting, the simulation technology of coupling dynamics becomes particularly significant. This paper introduces a finite element method in numerical modeling and simulation technology of coupled dynamics for propulsion shafting. Combined with the theory of coupled mechanics, the coupled longitudinal and transverse dynamic response of propulsion shafting under the condition of no-coupling and the coupled are compared. The structural dynamic characteristics of longitudinal and lateral loads are discussed respectively. Analysis shows that different forms of excitation have certain effects on the performance of coupled longitudinal and transverse vibration for propulsion shafting. The research aims to reveal the basic principle of coupled longitudinal and transverse vibration for marine propulsion shafting to improve the safety and reliability of the sailing performance of the ships.
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Donaghy, Andrew A. "Detecting and Correcting Propulsion Shafting Misalignment." In SNAME 8th Propeller and Shafting Symposium. SNAME, 1997. http://dx.doi.org/10.5957/pss-1997-09.

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The intent of this paper is to place in the hands of owners and ship repairers, phrased in simple terms, a guide to recognize problems caused by propulsion shafting misalignment and provide well tested methods to resolve them. Since the paper is based precisely on the technical assistance that the author has been giving owners and repairers for the past three and a· half decades on shafting realignment, the information should be particularly useful to the people who are actually involved in propeller and line shafting repair.
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Kokarakis, John. "Challenges in the Design of Propulsion Shafting." In SNAME 7th International Symposium on Ship Operations, Management and Economics. SNAME, 2021. http://dx.doi.org/10.5957/some-2021-003.

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Shafting system in a ship is probably its most critical component. Problems in the propulsion shafting, connecting engine with propeller may let the vessel dead in the water. This study focuses on three components of the shafting system which are well known to cause problems. These are the aft stern tube bearing, the coupling bolts and the sealing arrangement which prevents the ingress of sea water or the leakage of lubrication oil to the sea. A variety of issues related to these “weak” links of the shafting system is analyzed, based on actual cases of damage.
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7

Lee, D. C., and J. D. Yu. "Transient and Unstable Torsional Vibrations on a 4-Stroke Marine Diesel Engine." In ASME 2003 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ices2003-0578.

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Under steady state condition, unstable torsional vibration normally does not occur in shafting systems using 4stroke diesel engine due to hysteresis damping of shafting system and relative damping of standard fitted damper. However, the unstable torsional vibration occurs on marine propulsion shafting systems due to slippage of a multi-friction clutch installed between increasing gear box and shaft generator. To identify this unstable vibration and make proper counter measure, the simulation for transient torsional vibration using the Newmark method is introduced in this paper. The mechanism of this unstable vibration is verified by vibration and noise measurements of the shafting system.
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8

Zhonghua, Huang, Xie Ya, and Deng Yi. "Hybrid Power System Shafting Vibration Characteristic." In 2013 Fourth International Conference on Digital Manufacturing & Automation (ICDMA). IEEE, 2013. http://dx.doi.org/10.1109/icdma.2013.157.

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9

Mei, Jiangnuo, Yinhuan Zheng, Hong Lu, Zhangjie Li, Wei Zhang, Di Peng, Huang Lin, and Qiong Liu. "Dynamic Simulation Analysis of Multi-Support Rotary Shaft System." In ASME 2022 17th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/msec2022-85515.

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Abstract The multi-support rotary shafting system, represented by the ship propulsion shafting, is widely used in the power transmission device of the ship, and its working condition has a great influence on the operational safety of the ship. Therefore, it is necessary to conduct a dynamic analysis of the ship propulsion shafting. The ship propulsion shafting is used as a prototype to design a transmission shaft system fault detection platform based on the dual-engine parallel transmission mode. In order to accurately simulate the load loaded by the magnetic powder brake in the fault detection platform of the transmission shaft system, the control strategy of the magnetic powder brake loading is studied, including conventional PID control, Smith control, fuzzy Smith control and fuzzy Smith with integral action. The control realizes the ideal control effect of the magnetic powder brake. On the basis of the accurate load control effect, use the Adams software to conduct dynamic simulation analysis on the rigid-flexible hybrid model of the ship propulsion shafting. The dynamic characteristics of the shaft system under normal and fault conditions are studied, the research shows that the occurrence of collision and friction faults will increase the force fluctuation range of the shaft system, the shafting vibration will become more complex, and the characteristic frequency will have a large number of high-multiplication frequencies. The above analysis results have certain significance for the fault analysis of the transmission shaft system.
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Yang, L. H., Z. Li, and L. Yu. "Dynamic performance analysis of marine propulsion shafting." In International Conference on Computer Science and Technology. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/iccst140831.

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