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Relevant bibliographies by topics / Gear Engagement Dynamics

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Academic literature on the topic 'Gear Engagement Dynamics'

Author: Grafiati

Published: 28 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Gear Engagement Dynamics"

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Wang, Jianhong, Teik C. Lim, and Liding Yuan. "Spur gear multi-tooth contact dynamics under the influence of bearing elasticity and assembly errors." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 227, no. 11 (2013): 2440–55. http://dx.doi.org/10.1177/0954406213477816.

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A numerical model is formulated to analyze the tooth contact dynamic load distribution and dynamic transmission error of a pair of spur gears under the influence of bearing elasticity and gearbox assembly errors. In the proposed model, the deformation of the tooth is computed by applying a combination of finite elements and contact mechanics. The elasticity of the bearings is represented with infinitesimal linear spring elements, while the shafts and gears except the teeth that are in engagement are assumed to be rigid bodies. Applying those assumptions, three sets of highly coupled governing

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Deur, Joško, Jahan Asgari, Davor Hrovat, and Petar Kovač. "Modeling and Analysis of Automatic Transmission Engagement Dynamics-Linear Case." Journal of Dynamic Systems, Measurement, and Control 128, no. 2 (2005): 263–77. http://dx.doi.org/10.1115/1.2192827.

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A control-oriented model of a typical four-speed automatic transmission is developed by using the bond graph modeling method. The planetary gear set model utilizes the Karnopp friction model for hydraulic and one-way clutches, in order to provide a favorable computing efficiency. The full gear set model is reduced for various phases of the park/reverse and park/drive engagements. The reduced gear set models and linearized torque converter model are used as a basis for an algebraic analysis of the engagement dynamics. The analysis is originally conducted for the basic case of fully applied brak

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Li, Xue Yi, San Shuai Li, and Chao Chao Li. "Transient Dynamics Simulation of Helical Gear Pair Based on ANSYS." Advanced Materials Research 230-232 (May 2011): 578–81. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.578.

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Transient dynamic theory of the helical gear drive is investigated, and corresponding dynamics equations are derived. Based on parameterized language APDL of ANSYS, a parametric programming module for accurate modeling and automatic assembling of helical gear pair has been developed. The parametric modeling and transient dynamic analysis of a helical gear pair in a crane reducer are performed. Transient stresses and strains of the gear pair throughout the engagement process are obtained and the worst meshing location can be determined. Compared to the traditional static analysis, Simulation re

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Wang, Cheng, Shouren Wang, and Gaoqi Wang. "Research on Dynamic Model of Double Helical Gear Pair Based on TCA and LTCA." Volume 24, No 3, September 2019 24, no. 3 (2019): 476–84. http://dx.doi.org/10.20855/ijav.2019.24.31302.

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Numerous dynamic models of spur gears, helical gears, bevel gears, and face gears can be found in various studies. However, studies that focus on the dynamic model of a double helical gear pair are quite limited. The author proposed a model of a double helical gear pair by only considering the axial vibration. The author did not consider the friction and multiple backlashes in the proposed model. The friction force of the tooth surface and backlash are important factors that can cause complex non-linear phenomena in gear pairs. Therefore, a dynamic model of a double helical gear pair that take

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Vinogradov, B. V., D. O. Fedin, V. I. Samusia, and D. L. Kolosov. "Dynamic loads in self-aligning gear transmissions of heavy loaded machines." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 1 (2021): 84–90. http://dx.doi.org/10.33271/nvngu/2021-1/084.

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Purpose. Development of a mathematical model of a heavy loaded gear transmission with a self-aligning drive gear; evaluation of the dynamic load on the gear transmission in the gear alignment process. Methodology. The calculation schematic and equations of the relative motion of the self-aligning drive gear are formed using the methods of rigid body dynamics. Analytical expressions for the gear self-alignment time, collision velocity during the alignment and dynamic load factor are obtained by integrating an ordinary differential equation. Methods of the linear theory for oscillations are used

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Huo, Ping, Jian Ping Wang, Jiang Yu, and Rui Fang Liu. "Analysis on the Failure Mechanism of Un-Connecting Rod Engine Gear Assembly." Advanced Materials Research 216 (March 2011): 583–86. http://dx.doi.org/10.4028/www.scientific.net/amr.216.583.

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With the respect of the phenomenon that gear teeth are broken in the gear-gear ring striking gear of un-connecting rod engine, this paper analyzes its movement rule, and applies the explicit integral finite element method to simulate its dynamics. It shows that the theory engagement of gear-gear ring conforms to the rule of epicyclic gear train, and the deviation of the phase angle caused by mismachining tolerance is the main reason why gear teeth are broken.

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Wu, Shifeng, and H. S. Cheng. "Sliding Wear Calculation in Spur Gears." Journal of Tribology 115, no. 3 (1993): 493–500. http://dx.doi.org/10.1115/1.2921665.

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In gear applications where precipitous tooth failure mode such as scoring or scuffing has been avoided, “normal” wear becomes a life-determining factor. In this paper, sliding wear in spur gears, including the considerations of gear dynamics and rough-elastohydrodynamic lubrication, is analyzed. Formulas for equivalent wear rate and tooth wear profile along the line of action are derived. Results show that most materials are removed from both the addendum and dedendum tooth surfaces, and that the highest wear occurs at the beginning of an engagement. This high wear region corresponds to the ro

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Buinosov, A. P., A. T. Sharapov, and S. A. Chebakov. "Checking the quality of engagement of the traction gear of an electric locomotive 2ES6." Herald of the Ural State University of Railway Transport, no. 4 (2020): 13–20. http://dx.doi.org/10.20291/2079-0392-2020-4-13-20.

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A significant number of failures, violation of smooth running, as well as exceeding the noise ranges raise the problem of the quality of engagement of the traction gear of the 2ES6 electric locomotive. The article presents an analysis of statistical data collected on planned and unplanned repairs of 2ES6 series electric locomotives operated on the Sverdlovsk railway. The positive dynamics of the growth of traction drive failures confirms the urgency of the problem. One of the main reasons for the loss of performance of the traction drive is the failure of the traction gear elements. The gearin

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Fujii, Y., W. E. Tobler, E. M. Clausing, T. W. Megli, and M. Haghgooie. "Application of dynamic band brake model for enhanced drivetrain simulation." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 216, no. 11 (2002): 873–81. http://dx.doi.org/10.1243/095440702321031423.

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In a modern vehicle design process, analytical tools are widely employed to complement experimental approaches for design evaluation. When effectively utilized, they lead to a reduced development time with improved vehicle performance. The development process of an automatic transmission (AT) system can benefit from an analytical representation which accurately captures AT shifting behaviours. In a typical AT system, friction components such as wet clutches and band brakes are utilized to alter planetary gear configurations for automatic shifting. Thus, an accurate representation of friction c

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Dong, Xing Hui, Xue Tian, and Zhi Ling Yang. "Prediction of the Fatigue Life for Large Wind Turbine Gearbox." Applied Mechanics and Materials 472 (January 2014): 539–43. http://dx.doi.org/10.4028/www.scientific.net/amm.472.539.

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Wind turbine gearbox is the key component. Because of alternating loads caused by gear engagement, variations of wind speed and fluctuation of load, it is prone to get fatigue damage, which lead to the high failure rate and low life. In this paper, obtaining the stress time histories through multi-body dynamics simulation, then base on the simulation data, statistical processing load time histories by used rain flow counting method, the last is that estimating fatigue life of components, combined with P-S-N curves of parts material and linear cumulative damage law. The fatigue life prediction

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Dissertations / Theses on the topic "Gear Engagement Dynamics"

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Pykal, Vojtěch. "Výpočtové modelování dynamiky záběru čelního ozubeného soukolí v prostředí MBS." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-445163.

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This master’s thesis is focused on the compilation of a computational modelling of gear mesh engagement dynamics of a spur gear by MBS approach. The user input is the specific geometry of gears, the operating speed, and the load torque. The output are the forces in the gear engagement and the reaction of the forces in the wheel bearings depending on the change in the stiffness of the gear due to the changing number of teeth in the engagement and the change in the axial distance. This model is characterized by a fast and relatively accurate calculation in the time domain. This means that it can

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WANG, CHUEN-REN, and 王春仁. "Dynamic Response of a Ball Screw under the Engagement Effect of Transmission Gear Pair." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/r8jvtr.

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博士<br>國立中正大學<br>機械工程系研究所<br>106<br>The dynamic characteristics of a ball screw system equipped with gear pair are discussed in this dissertation. Briefly, the power is created by motor on the drive pinion and transmitted to the driven gear on ball screw. Serious vibration is caused by backlash and manufacture error of gear in the transmission process. These errors will results in the nonlinear dynamic characteristics of ball screw at the engagement situation. 3D ball screw model is established by Solidwork, and the torque is calculated for the various preload conditions by ABAQUS. The gear mes

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Book chapters on the topic "Gear Engagement Dynamics"

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Oliveri, Leonardo, Carlo Rosso, and Stefano Zucca. "Influence of Actual Static Transmission Error and Contact Ratio on Gear Engagement Dynamics." In Nonlinear Dynamics, Volume 1. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54404-5_15.

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Atanasiu, V., and D. Leohchi. "Evaluation of Engagement Accuracy by Dynamic Transmission Error of Helical Gears." In New Trends in Mechanism Science. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9689-0_49.

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Conference papers on the topic "Gear Engagement Dynamics"

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Prajapati, Gaurang, Amar Penta, and Prasad Warule. "AMT Reverse Gear Engagement Dynamics and Control." In Symposium on International Automotive Technology 2019. SAE International, 2019. http://dx.doi.org/10.4271/2019-26-0046.

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Wu, Guangqiang, and Shuo Sun. "Simulation and Experiment Research on Shuffle and Clunk in Gear Shifting Process." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85178.

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The dynamics model of gear shifting process considering the state of clutch and synchronizers and the process of engagement and disengagement is established to realize the continuous simulation of the entire shifting process. The pitching dynamics module is introduced based on the coupled mechanism of torsional, longitudinal and vertical vibration of the system. The simulation reproduces the dynamic responses and states of eight analyzed phases in the whole process. The model is verified from the comparison between simulation and experimental results of four working conditions. Based on the si

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Walker, Paul D., and Nong Zhang. "Influence of Engine Harmonics on Synchroniser Mechanism Dynamics." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63911.

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Synchronizer mechanisms play an important role in the selection and engagement of gears in manual, automated manual and dual clutch transmissions (DCT). These mechanisms rely heavily on the balancing of torque loads in cone clutches, dog gears and from losses in the gearbox to ensure repeatable and reliable actuation, with excessive wear on friction and contact surfaces leading to degradation of actuation and potential mechanism failure. Dual clutch transmissions, in particular, provide a unique operating environment for synchronizers, most notably is its actuation with the engine still drivin

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Zheng, Ke, Jianjun Hu, Bangzhi Wu, and Yin Wang. "Optimization Design and Analysis for Pre-Shift Control Parameters of Wet Dual Clutch Transmissions Based on Dynamic Modeling of Synchronizer." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97324.

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Abstract The DCTs have increased in prevalence for achieving power uninterrupted shifting and pre-shift process significantly influences the DCTs shift quality. Research on the multistage and nonlinear characteristics of the gear preselect process is not comprehensive so that there are shortcomings such as high impact, long synchronization time and poor economy. In view of above detrimental phenomenon, control parameters optimization is conducted in order to realize fast, smooth and economic pre-shifting on the basis of analyzing the sensitivity of the factors affecting pre-shift process. Cons

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Berbyuk, Viktor. "Towards Pareto Optimization of Performance of a Generic Synchronizer of Transmission Systems." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46773.

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Manual transmissions for passenger cars and trucks are equipped with synchronizer mechanisms. A synchronizer mechanism as a key component of a transmission system must be able to prevent transmission gears from shocking, reduce the noise and it has a great impact on driving comfort and transmission efficiency. Gear shifting improvement with respect to smooth, quick and energy efficient synchronizer’s performance is still an important issue for automotive industry. A synchronization process comprises several phases within which presynchronization, main synchronization, pre-engagement and engage

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Osman, T., and P. Velex. "Coupling Between Dynamic Behavior and Contact Fatigue in Spur Gears." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-47314.

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The main objective of the paper is to study the possible interactions between contact fatigue and dynamic tooth loads on gears. A specific 3D dynamic gear model is combined to contact fatigue models accounting for crack initiation and propagation. The numerical findings compare well with the experimental evidence from a back-to-back test rig. Five characteristic points on a tooth profile are analyzed and it is shown that contact fatigue on spur gears clearly depends on dynamic phenomena. Finally, the introduction of profile relief is discussed and its positive influence on the risk of failures

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Lin, Ah-Der, and Jao-Hwa Kuang. "The Bending and Surface Contact Stress Variations in a Mating Plastic Gear Pair." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34470.

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A dynamic model of an engaging spur gear pair is proposed to study the distributions and variation of bending and surface contact stresses around the fillet and contacting points for plastic gears. The parameters used in this dynamic model include time-varying mesh stiffness, frictional coefficient, and profile-shifted factor, etc. Due to high sensitivity to heat for plastic material, the influence of temperature on plastic gears has also been taken into consideration in this work. A computational algorithm is developed to simulate the variation of fillet bending and surface contact stresses d

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Talbert, Paul B., and Richard R. Gockel. "Modulation of Gear Tooth Loading Due to Traveling Wave Vibration." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/ptg-48029.

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The first reduction gear set in a turboprop engine gearbox was changed from a spur configuration to helical in order to reduce dynamic load and tooth stress. During initial strain gage testing, a low frequency modulation (approximately 70 Hz) of the tooth engagement strain was observed. The modulation had not been present during previous strain gage tests of the gears in their original spur configuration. The expected decrease in dynamic load and tooth stress was not realized due to the low frequency modulation. Post test inspection revealed indications of end loading on both the forward and a

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Shao, Yimin, Xi Wang, Zaigang Chen, and Teik C. Lim. "Effect of Gear Tooth Crack on Spur Gear Dynamic Response by Simulation." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-47524.

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Geared transmission systems are widely applied to transmit power, torque and high rotational speed, and as well as change the direction of rotational motion. Their performances and efficiencies depend greatly on the integrity of the gear structure. Hence, health monitoring and fault detection in geared systems have gained much attention. Often, as a result of inappropriate operating conditions, application of heavy load beyond the designed capacity or end of fatigue life, gear faults frequently occur in practice. When fault happens, gear meshing characteristics, including mesh stiffness that i

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Duverger, O., P. Velex, L. Vedmar, and P. Sainsot. "A Model of the Dynamic Behavior of Spur Gears With Consideration of Off-Line-of-Action Contacts." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/ptg-48052.

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Because of deflections under load, contacts on tooth flanks can occur outside the theoretical plane of action between nonconjugated profiles especially when tooth modifications are not appropriate. The main objective of the present paper is to introduce an original model of the dynamic behavior of spur gears when submitted to these particular meshing conditions. The pinion and the gear of a pair are modeled as two rigid cylinders linked by stiffnesses and dampers whose amplitudes and orientations vary in order to simulate the evolutions of the meshing conditions. For the sake of simplicity, on

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