Relevant bibliographies by topics / Tooth Contact Analysis (TCA)

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Tooth Contact Analysis (TCA)'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Tooth Contact Analysis (TCA)"

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Zhang, Rui Liang, Tie Wang, and Hong Mei Li. "Tooth Contact Analysis of the Double Circular Arc Tooth Spiral Bevel Gear." Applied Mechanics and Materials 44-47 (December 2010): 3711–15. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.3711.

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Tooth contact analysis is an effective tool for meshing analysis of the double circular arc profile spiral bevel gear (DCAPSBG), as well as the basis for loading tooth contact analysis and finite element analysis. Applying the principle of tooth contact analysis (TCA) and the tooth profile characteristic of the DCAPSBG, this paper introduced and discussed the key contents and method of TCA computer programming for numerical simulation analysis of the transmission meshing quality of DCAPSBG. The TCA program developed in this paper, which had been verified by real examples, provided an effective approach for the design of DCAPSBG.
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Wei, Wei, and Lian Hong Zhang. "An Improved Algorithm for Tooth Contact Analysis for Hypoid Gear Based on Axial Section Programming." Applied Mechanics and Materials 44-47 (December 2010): 1392–96. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.1392.

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An improved algorithm of tooth contact analysis (TCA) is proposed to overcome the deficiency of the current TCA algorithm for hypoid gear. The key improvement of the proposed algorithm is to introduce proportional coefficients of tooth length and tooth height in TCA. The solution domain of the nonlinear equations in TCA is limited in the range of tooth surface by variable substitution. By analyzing the positions which boundary points possibly appear on axial section, the values of proportional coefficients corresponding to the positions are obtained. Boundary points of the contact trace are computed with particle swarm algorithm and conjugate gradient method, and distributed points on the contact trace are solved according to information of boundary points. With the improved algorithm the boundary points of the contact trace can be figured out accurately and there is no need to set initial values for tooth contact analysis.
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Xiao, Miao Xin, and Hua Ru Yan. "The TCA of Hypoid Gears Based on MATLAB." Applied Mechanics and Materials 190-191 (July 2012): 213–17. http://dx.doi.org/10.4028/www.scientific.net/amm.190-191.213.

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The present situation of the tooth contact analysis (TCA) and the application of MATLAB to the tooth contact analysis (TCA) is introduced briefly in this paper. The tooth surface equation of the big gear and pinion is established by powerful mathematical calculation and graphic display of MATLAB, at the same time transmission error and contact path is obtained. The calculation process is simplified and the operation precision of TCA is improved than before.
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Zhang, Rui Liang, Tie Wang, and Zhi Fei Wu. "TCA Principe and Application of the Double Circular Arc Tooth Spiral Bevel Gear." Applied Mechanics and Materials 121-126 (October 2011): 3559–61. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.3559.

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Tooth contact analysis (TCA) is an effective tool for meshing analysis of the double circular arc profile spiral bevel gear (DCAPSBG), and it is the basis of loading tooth contact analysis and finite element analysis. The TCA application is developed by Visual Basic and MATLAB mixed programming method, this paper compared the results of the TCA application analysis with the results of contact area check experiment on one pair of gears with given parameters. The TCA application had been verified by real experiment, this provided an effective approach for the design of DCAPSBG.
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Jiao, Ji Song, and Xue Mei Cao. "Generation and TCA of Straight Bevel Gear Drive with Modified Geometry." Applied Mechanics and Materials 86 (August 2011): 403–6. http://dx.doi.org/10.4028/www.scientific.net/amm.86.403.

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In order to reduce the sensitivity of straight bevel gear drives to misalignment, a new geometry of such gear drives is proposed in longitudinal direction. Point contact instead of line contact of tooth surfaces is achieved by longitudinal crowning of pinion tooth surface. The tooth surface modeling and tooth contact analysis (TCA) of straight bevel gear drives have been established. TCA program of a pair of straight bevel gears was performed in MATLAB and tooth bearing contact and transmission errors were obtained.
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Chen, C.-K., and C.-Y. Wang. "Compensating analysis of a double circular-arc helical gear by computerized simulation of meshing." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 215, no. 7 (July 1, 2001): 759–71. http://dx.doi.org/10.1243/0954406011524126.

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A mathematical model of a stepped double circular-arc helical tooth profile with two centre offsets is developed. The conditions of gear meshing that reflect manufacturing and assembly errors are simulated. The locations of bearing contact and the contact path pattern of mating tooth surfaces are determined by tooth contact analysis (TCA). By applying the proposed mathematical model and TCA, single error impact can be determined. To compensate for offset and angular misalignment, the authors propose an adjustable bearing whereby transmission errors can be minimized. The investigation is illustrated with several numerical examples.
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Sharif, K. J., S. Kong, H. P. Evans, and R. W. Snidle. "Contact and elastohydrodynamic analysis of worm gears Part 2: Results." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 215, no. 7 (July 1, 2001): 831–46. http://dx.doi.org/10.1243/0954406011524180.

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The paper presents the results of modelling the contact and elastohydrodynamic lubrication (EHL) effects between the teeth of worm gears. A number of different practical worm gear designs have been studied covering a wide range of sizes and potential applications, from small instrument drives to high power units. All the designs are of the popular ZI type, in which the worm is an involute helicoid, with deliberate mismatch of tooth conformity in order to avoid damaging edge contact. The results cover loaded tooth contact analysis (‘loaded TCA’) under dry conditions, predicted film-generating behaviour with lubrication, surface and oil film temperatures, and calculated values of friction and transmission efficiency. It is demonstrated that regions of poor film formation may be predicted in a qualitative way on the basis of loaded TCA together with consideration of the kinematics of entrainment at the contacts.
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Zhang, Y., and Z. Wu. "Offset Face Gear Drives: Tooth Geometry and Contact Analysis." Journal of Mechanical Design 119, no. 1 (March 1, 1997): 114–19. http://dx.doi.org/10.1115/1.2828772.

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This paper presents a detailed investigation on the manufacturing, tooth geometry and contact characteristics of face gear drives with offset axes. In the paper, the tooth geometry of offset face gears is analytically determined by simulating the conjugate motion between the gear and the cutting tool in the generation process. Design criteria are established for the optimal tooth element proportions of offset face gears that avoid tooth undercutting and pointing. The tooth surface geometry of the gear member of the drive is modified by using a shaper that resembles the pinion in profile but has a few more teeth than the pinion to localize the tooth contact. The contact characteristics of the offset face gears are analyzed by a tooth contact analysis (TCA) program that simulates the meshing process of the gear drive assembled under misalignment. An example of offset face gear design and contact analysis is included in the paper.
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Xu, Kai, Geng Liu, Xiao Zhong Deng, Jian Jun Yang, and Jian Xin Su. "A Simplified Approach Based Phase Angle for Tooth Contact Analysis of Planetary Gear Trains." Applied Mechanics and Materials 86 (August 2011): 709–12. http://dx.doi.org/10.4028/www.scientific.net/amm.86.709.

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Planetary gear trains have many advantages in applications. In these advantages, quiet noise and slight vibration may be contribute to low Transmission Error (TE), which can be calculated by Tooth Contact Analysis (TCA). However, to obtain numerical solution of the meshing equations based on TCA for planetary gear trains is very difficult because of a large number of nonlinear equations and unknowns. A simplified method utilizing planet phase angle is investigated and the numerical solution of planetary gear trains TE by TCA can be realized in this paper.
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Guo, Hui, Ning Zhao, and Hao Gao. "Tooth Contact Analysis of Face Gear Drive Modified by a Grinding Worm." Advanced Materials Research 139-141 (October 2010): 1154–57. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.1154.

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This paper proposes a modification method for tooth surface of face gear drive with a grinding worm on a numerical grinding machine. The surface equation of grinding worm is derived, and the coordinate System of generating the worm is established. Tooth contact analysis (TCA) is performed to investigate the performance of face gear drive before and after modification, and the alignment error is considered. This method can obtain a more stable bearing contact in contrast to the method by increasing tooth number of shaper. The longitudinal bearing contact on the face-gear tooth surface has been obtained which will increase the contact ratio. By modification the edge contact at surface edges of the gears can be avoided and the modification magnitude can be controlled freely.
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Dissertations / Theses on the topic "Tooth Contact Analysis (TCA)"

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Guyonneau, David. "Contribution à la détermination de surfaces conjuguées pour la transmission de puissance." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4134.

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Les travaux présentés à travers ce manuscrit s'inscrivent dans un contexte de recherches exploratoires sur l'optimisation des surfaces engrenantes. Après une étude approfondie de l'emploi des engrenages dans un environnement aéronautique, l'élaboration d'une nouvelle méthodologie de génération de profils de denture est proposée. Les travaux s'attachent à caractériser le comportement mécanique spécifique d'un montage d'engrenages dans les Boites de Transmission de Puissances (BTP) d'hélicoptère.Un outil informatique a été créé dans le module VBA (Visual Basic Application) d'Excel. Il permet de créer automatiquement des profils de denture conjugués et optimisés. Il a l'avantage de définir analytiquement plusieurs grandeurs physiques. L'outil a ainsi pour objectif de proposer des profils de denture optimisés selon plusieurs critères. Les « objectifs » retenus sont le rendement et la contrainte équivalente de Hertz au contact suivant le critère de Von Mises.Les travaux s'articulent autour de trois axes : - la reconstruction de profils conjugués de denture par une approche novatrice basée sur le « contact », - la construction de critères physiques (glissement, pression, contrainte, …), - la recherche de profils de denture optimaux en utilisant la simulation de Monte Carlo.Enfin, la perspective de rendre générique cette méthode afin qu'elle puisse générer n'importe quels types d'engrenage est envisagée en fin de manuscrit
The work described in the present manuscript is part of exploratory researches dealing with gears meshing surfaces optimization. After a short study of gears used in an aeronautical environment, the development of an innovative tool for tooth profile design is defined. Then, the specific behavior of a gear mesh within a helicopter main gearbox (MGB) is evaluated.A VBA software has been coded under MS Excel to generate conjugated and optimized gear tooth profiles. It advantageously defines and uses several physical parameters with their analytical formulation. The software provides at the user optimized tooth profiles according to a couple of criteria. The two “objective” functions evaluated are the efficiency and the Hertz equivalent stress within the contact using the Von Mises criterion.The work has been focused on three aspects:- The design of conjugated tooth profiles by contact sharing,- The definition of the relevant physical parameters,- The optimization of tooth profiles using Monte Carlo SimulationEventually, a generic method to design gear profiles, taking into account any physical parameters related to a gear mesh, could be expected as a future of this thesis work
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Bruyère, Jérôme. "Contribution à l'optimisation de la conception des engrenages coniques à denture droite : analyse et synthèse de la géométrie et des tolérances." Phd thesis, Paris, ENSAM, 2006. http://pastel.archives-ouvertes.fr/pastel-00002262.

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La maîtrise accrue des matériaux et des procédés de forgeage permet aujourd'hui d'obtenir des engrenages coniques d'une qualité suffisante pour pouvoir les utiliser sans autre procédé de finition. Ce sont les pièces dites «net shape». Grâce à cette évolution technologique, il est nécessaire de d'optimiser la définition géométrique de ces engrenages en tenant compte des possibilités des procédés de forgeage, en particulier. Tout d'abord, la définition de la géométrie nominale des engrenages coniques à denture droite basée sur les propriétés géométriques et cinématiques du profil en développante de cercle sphérique est réétudiée et a abouti à une modélisation paramétrique des surfaces actives en intégrant un bombé longitudinal. Afin de garantir un certain niveau de qualité de l'engrènement, il est nécessaire de limiter les variations inhérentes au procédé de forgeage et aux ressources de fabrication, il s'agit de l'analyse et de la synthèse des tolérances. Cette analyse a nécessité une modélisation géométrique des engrenages incluant les écarts intrinsèques et les écarts de situation. L'analyse de l'impact de ces écarts sur l'erreur cinématique (Tooth Contact Analysis) repose sur la résolution d'un système d'équations non linéaires pour chaque position du pignon et d'un traitement de ces résultats; la difficulté de cette analyse est la grande sensibilité des résultats aux écarts. Cet outil «TCA» est le module principal de l'analyse des tolérances qui est réalisée de façon statistique par simulation de Monte Carlo. L'analyse des tolérances permet de valider une solution d'allocation de celles-ci mais ne permet pas son allocation automatique. Ainsi une approche de synthèse des tolérances a été validée, il s'agit de l'optimisation par algorithme génétique où la fonction objectif est de minimiser le ratio coût des tolérances sur la probabilité de respect des exigences. Cette analyse et cette synthèse ont été menées dans un premier temps sans charge, en considérant l'engrenage comme indéformable. Puis, la prise en compte des déformations est réalisée par la méthode des coefficients d'influences. Le problème de contact et de déformation globale de la denture sont découplés. Les coefficients d'influences de contact sont estimés par la méthode de Boussinesq et Cerruti. Les coefficients d'influence de flexion sont estimés par interpolation et méthode des éléments finis. Ce modèle permet l'analyse de l'engrènement sous charge mais les temps de calculs restent un handicap pour l'analyse des tolérances. Ces modèles de comportement pourront être affinés dans de futurs travaux et être le support de nouveaux modèles de spécification des engrenages, de suivi du processus de fabrication, d'une meilleure connaissance des interactions géométrie-mécanique-matériau, etc.
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DeCaires, Brian J. "Variation analysis of involute spline tooth contact /." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1176.pdf.

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De, Caires Brian J. "Variation Analysis of Involute Spline Tooth Contact." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/375.

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The purpose of this thesis is to provide an in-depth understanding of tooth engagement in splined couplings based on variations in clearances between mating teeth. It is standard practice to assume that 25-50% of the total spline teeth in a coupling are engaged due to variations from manufacture. Based on the assumed number of teeth engaged, the load capability of a splined coupling is determined. However, due to the variations in tooth geometry from manufacuture, the number of teeth actually engaged is dependent on the applied load and the tooth errors. The variations result in sequential tooth engagement with increasing load. To date, little work has been done to model tooth engagement and the stresses resulting from unequal load sharing among engaged teeth. A Statistical Tooth Engagement Model (STEM) has been developed which allows designers to estimate tooth engagement and resulting stress based on a statistical representation of the tooth errors. STEM is validated with finite element models as well as some preliminary experimental tests. Parametric studies are performed to determine the effect and sensitivities of variations in tooth parameters and tooth errors.
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Vogel, Olaf [Verfasser]. "Gear-Tooth-Flank and Gear-Tooth-Contact Analysis for Hypoid Gears : An Application of Singularity Theory / Olaf Vogel." Aachen : Shaker, 2007. http://d-nb.info/1170528155/34.

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Yang, Feng. "Numerical analysis and three dimensional modelling of worm gearing with localised tooth contact." Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302638.

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Vaidyanathan, Sathyanarayanan. "Application of plate and shell models in the loaded tooth contact analysis of bevel and hypoid gears." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1335540802.

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Adnan, Md Asif, and Ahmed Shehata. "Stress Analysis Validation for Gear Design." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-16862.

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Gear stress analysis and understanding the effect of misalignment and microgeometry is important for gear designers and for those who work in gear maintenance. The misalignment can lead to the higher stress acting in one side of the gear tooth and the micro-geometry modification can improve the stress distribution in the gear teeth. In this research, a helical gear pair was modeled using three different software and tools; LDP, KISSsoft and Abaqus. Three different cases were modeled to study the effect of misalignment and microgeometry. Finally, the results from different tools were presented and discussed. It was observed that the tooth contact analysis software resulted in significantly higher stresses than the FE software. The results have been discussed to understand the differences in the cases obtained from the used tools. The results showed how bad is the effect of the misalignment on the gear mesh and the stress distribution and how the microgeometry modifications are used to compensate that effect.
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Kolivand, Mohsen. "DEVELOPMENT OF TOOTH CONTACT AND MECHANICAL EFFICIENCY MODELS FOR FACE-MILLED AND FACE-HOBBED HYPOID AND SPIRAL BEVEL GEARS." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1245266082.

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Song, Yongle. "Optimum design and 3D CAD/CAE simulation of spiroid and worm gears." Thesis, Nottingham Trent University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369311.

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Books on the topic "Tooth Contact Analysis (TCA)"

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Litvin, F. L. Topology of modified helical gear and tooth contact analysis (TCA) program. [Washington, DC]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1989.

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Litvin, F. L. Topology of modified helical gears and tooth contact analysis (TCA) program. Cleveland, Ohio: Lewis Research Center, 1989.

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Litvin, F. L. Spur gears: Optimal geometry, methods for generation and tooth contact analysis (TCA) program. [Washington, DC]: National Aeronautics and Space Administration, Scientific and Technical Information Division, 1988.

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Litvin, F. L. Generation of spiral bevel gears with conjugate tooth surfaces and tooth contact analysis. [Washington, DC]: National Aeronautics and Space Administration, Scientific and Technical Information Office, 1987.

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Litvin, F. L. Local synthesis and tooth contact analysis of face-milled, uniform tooth height spiral bevel gears. [Washington, DC]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1997.

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Litvin, F. L. Local synthesis and tooth contact analysis of face-milled, uniform tooth height spiral bevel gears. [Washington, D.C.]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1996.

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Litvin, F. L. Local synthesis and tooth contact analysis of face-milled spiral bevel gears. [Washington, D.C.]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1991.

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Litvin, F. L. Generation and tooth contact analysis of spiral bevel gears with predesigned parabolic functions of transmission errors. [Washington, D.C.]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1989.

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Design, generation and tooth contact analysis (TCA) of asymmetric face gear drive with modified geometry. [Cleveland, Ohio]: National Aeronautics and Space Administration, Glenn Research Center, 2001.

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L, Litvin F., United States. Army Aviation Systems Command., and United States. National Aeronautics and Space Administration., eds. Generated spiral bevel gears: Optimal machine-tool settings and tooth contact analysis. [Washington, DC]: National Aeronautics and Space Administration, 1985.

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Book chapters on the topic "Tooth Contact Analysis (TCA)"

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Chang, Shinn-Liang, Hung-Jeng Lin, Jia-Hung Liu, and Ching-Hua Hung. "Simulations of Gear Shaving and the Tooth Contact Analysis." In Lecture Notes in Electrical Engineering, 95–110. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-74905-1_8.

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Gonzalez-Perez, Ignacio, and Alfonso Fuentes-Aznar. "Tooth Contact Analysis of Cylindrical Gears Reconstructed from Point Clouds." In New Approaches to Gear Design and Production, 219–37. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34945-5_8.

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Du, Jinfu, Zhengrong Wang, Kai Liu, and Yiteng Gao. "A Novel Tooth Contact Analysis Method Based on Value Iteration." In Advances in Mechanical Design, 162–69. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9941-2_14.

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Duan, Luqian, Yuehai Sun, and Qingzhen Bi. "Tooth Contact Analysis of Ti Worm Gearing Considering Boundary Condition." In Perspectives from Europe and Asia on Engineering Design and Manufacture, 713–22. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2212-8_69.

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Tsay, C. B. "Computer Aided Simulation of Tooth Contact Analysis for Helical Gears with Involute Shape Teeth." In Numerical Techniques for Engineering Analysis and Design, 237–44. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3653-9_27.

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Fan, Q. "Ease-Off and Application in Tooth Contact Analysis for Face-Milled and Face-Hobbed Spiral Bevel and Hypoid Gears." In Theory and Practice of Gearing and Transmissions, 321–39. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19740-1_15.

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Mahr, B., A. Pogacnik, and A. Langheinrich. "Derivation of tooth stiffness of asymmetric gears for loaded tooth contact analysis." In International Conference on Gears 2019, 937–48. VDI Verlag, 2019. http://dx.doi.org/10.51202/9783181023556-937.

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Yang, S. W. "Contact stress analysis of aeronautic gear based on rough tooth surface." In Power Engineering, 187–90. CRC Press, 2016. http://dx.doi.org/10.1201/9781315386829-29.

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Schlecht, B., T. Schulze, and K. Riedel. "Tooth contact analysis under load on double helical-geared planetary gearboxes." In International Conference on Gears 2017, 83–96. VDI Verlag, 2017. http://dx.doi.org/10.51202/9783181022948-83.

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Liu, L. "Tooth contact analysis of a new type of face gear drive." In International Conference on Gears 2017, 457–66. VDI Verlag, 2017. http://dx.doi.org/10.51202/9783181022948-457.

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Conference papers on the topic "Tooth Contact Analysis (TCA)"

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Chao, Li-Chi, and Chung-Biau Tsay. "Stress Analysis of Spherical Gear Sets." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86843.

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The spherical gear is a new type of gear proposed by Mitome et al. [1]. Different from that of the conventional spur or helical gear sets, the spherical gear set can allow variable shaft angles and large axial misalignments without gear interference during the gear drive meshing [1, 2]. Geometrically, the spherical gear has two types of gear tooth profiles, the concave tooth and convex tooth. In practical transmission applications, the contact situation of a spherical gear set is very complex. To obtain a more realistic simulation result, the loaded tooth contact analysis (LTCA) has been performed by employing the finite element method (FEM). According to the derived mathematical model of spherical gear tooth surfaces, an automatic meshes generation program for three-dimensional spherical gears has been developed. Beside, tooth contact analysis (TCA) of spherical gears has been performed to simulate the contact points of the spherical gear set. Furthermore, the contact stress contours of spherical gear tooth surfaces and bending stress of tooth roots have been investigated by giving the design parameters, material properties, loadings and boundary conditions of spherical gears.
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Yu, Zhiyuan, and Kwun-Lon Ting. "Explicit Dynamics Analysis for Harmonic Drives." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34759.

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Harmonic drive can have a high nonlinear dynamic behavior. In order to find a way to simulate its operating process and evaluate its performance, this paper gave an introduction of different methods of tooth contact analysis (TCA) and found out that explicit dynamics as a newly used tool for TCA is the most suitable one. Because the harmonic drive’s high contact ratio and uncertainty of contact boundary match with explicit dynamics’ features of explicit algorithm, trajectory detection to deal with contact. A harmonic drive with a new tooth profile has been modeled in Ansys Workbench and solved by explicit dynamics solver. According to the results, the deformation of the simulation model has been compared with the theoretical calculation and experimental observation to make sure that the model reflects the harmonic drive’s elastic behavior correctly. And the nonlinear behavior of the harmonic drive including high contact ratio and output’s hysteresis effect can be predicted by explicit dynamics. So explicit dynamics can offer a new way to simulate harmonic drive’s working process. As a general case of gear drive, this method is possible to be widely adopted by gear industry in the future. Furthermore, the contact ratio and root fillet stress results show that the new tooth profile can significantly reduce the stress concentration to increase the fatigue life of the harmonic drive.
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Chen, Ningxin. "Regular and Interference Tangents of Tooth Surfaces in Point Contact Gearing." In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/ptg-14463.

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Abstract The presented paper studies regular and interference tangents of two tooth surfaces in point contact gearing. The relative surface of two tangent surfaces is introduced and algorithm of its principal curvatures and principal directions are given. By analysis of three types of the relative surfaces, their principal curvatures and surface normal directions, the conditions of the regular and the interference tangents are obtained. Two numerical examples, a spiral bevel and a hypoid gear sets, both face-hobbed, illustrate the above conditions and the TCA results.
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Saiki, Kohei, Keiichiro Tobisawa, Masaki Kano, Yasuharu Ohnishi, and Takashi Kusaka. "Loaded TCA of Measured Tooth Flanks for Lapped Hypoid Gears." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34102.

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Usually, the Loaded Tooth Contact Analysis (i.e. LTCA) of hypoid gears uses the nominal tooth flanks described by the machine setting and the cutter specifications. Only a few studies are performed on the LTCA directly using the measured tooth flanks such as carbonize-hardened and lapped hypoid gears. This paper presents an innovative LTCA method directly using the measured tooth flanks at each manufacturing step including not only the milling or hobbing process but also the troublesome heat-treatment, lapping or grinding processes. The proposed new LTCA method is extremely concise. Firstly, the 3-D shape data of the manufactured tooth flanks, which are the original x-y-z coordinates but not the differences against their nominal tooth flanks as before, are obtained on a coordinate-measuring machine. Another important factors the load deflections are measured on the assembled transmission by applying the static transmitting torque. Secondly, the pinion and gear are localized at the nominal mounting position, and the no load TCA can be obtained by calculating the gap between the original tooth flanks at each roll angle. Lastly, since the load deflections can be considered as the movement of mounting position, the Loaded TCA can be obtained by calculating the gap between the moved tooth flanks at new mounting position. As practical applications, the new LTCA method is used to improve the strength of high-torque hypoid gears for an All-Wheel-Drive transmission. As a result, the tooth contact pattern and pitting position observed in endurance test agreed well to the LTCA predictions and the demanding life is achieved by modifying the loaded contact pattern of lapped hypoid gears.
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5

Xu, Kai, Aijun Xu, Jianjun Yang, Ming Qiu, and Jianxin Su. "Tooth Contact Analysis of Planetary Gear Trains and its Transmission Error Experiments and Frequency Spectrum Analysis." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37418.

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Based on Tooth Contact Analysis (TCA), a feasible approach for Transmission Error (TE) of planetary gear train is proposed in this paper as follows: the first step is to proceed a specific analysis of the TE from the planetary gear train with only one planet, the second step is to calculate each phase difference of planets in the gear train. Then the total TE of a planetary gear train can be calculated simply by the two steps. The paper points out 3 kinds of positional difference of planets: coincidence, equalization, imparity and their respective effect on the total TE of the gear train, then draws a conclusion that the equalization is the optimized one among the above three. Eventually, the TE experiment of the planetary gear train is performed, and spectrum analysis is adopted in the paper.
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6

Tsuji, Isamu, Hiroshi Gunbara, Kazumasa Kawasaki, and Akiyasu Takami. "Machining and Running Test of High-Performance Face Gear Set." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48824.

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The purpose of this research is to develop a high-performance face gear set for aircraft. The geometrical design method of the face gear has already been proposed, and how to decide an effective engagement area under the design parameter has been clarified. A numerical example is presented based on the proposed method. Before machining test, the modified-tooth was decided by the developed Tooth Contact Analysis (TCA) program in order to control the tooth contact pattern. The influence of alignment error of each axis of gear was investigated using TCA. The designed modified-tooth was processed by the Multi-Tasking machine. Finally, running test was performed at a pinion rotating speed of 970 rpm. The face gear set can be operated continuously at an maximum load torque 1390 N · m, without any trouble. The transmission efficiency reached 98.9% under maximum load torque. This cutting method of the face gear introduces a new degree of freedom for defining optional shapes of tooth modification.
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7

Fang, Zongde, Hongbin Yang, Yanwei Zhou, and Xiaozhong Deng. "Optimization for the Dynamic Behavior of High Speed Spiral Bevel Gears." In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/ptg-14395.

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Abstract A new approach for optimizing the dynamic behavior of spiral bevel gear drives has been developed. The local synthesis, tooth contact analysis (TCA) and loaded tooth contact analysis (LTCA) techniques were used to constitute the design process with feedback, by which a contact ratio being near 2.0 or 3.0 would be achieved. An improved dynamic behavior of the spiral bevel gear drives under certain operating load or a wide range of load could be obtained.
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Gonzalez-Perez, Ignacio, Alfonso Fuentes, Faydor L. Litvin, Kenichi Hayasaka, and Kenji Yukishima. "Application and Investigation of Modified Helical Gears With Several Types of Geometry." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34027.

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Involute helical gears with modified geometry for transformation of rotation between parallel axes are considered. Three types of topology of geometry are considered: (1) crowning of pinion tooth surface is provided only partially by application of a grinding disk; (2) double crowning of pinion tooth surface is obtained applying a grinding disk; (3) concave-convex pinion and gear tooth surfaces are provided (similar to Novikov-Wildhaber gears). Localization of bearing contact is provided for all three types of topology. Computerized TCA (Tooth Contact Analysis) is performed for all three types of topology to obtain: (i) path of contact on pinion and gear tooth surfaces; (ii) negative function of transmission errors for misaligned gear drives (that allows the contact ratio to be increased). Stress analysis is performed for the whole cycle of meshing. Finite element models of pinion and gear with several pairs of teeth are applied. A relative motion is imposed to the pinion model that allows friction between contact surfaces to be considered. Numerical examples have confirmed the advantages and disadvantages of the applied approaches for generation and design.
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9

Liu, Chia-Chang, and Kao Hui Lin. "Simulation of Double Flank Gear Rolling Testing." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86970.

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The double flank gear rolling testing is a method by which a master gear is rolled together, in tight mesh, with a testing gear. As the gears roll, slight variations of center distance are measured and recorded as an indicator of gear quality. The double flank gear rolling testing is easy and low coast, therefore, it is widely used in gear industry. In this study, the mathematical models of standard master gears and testing gears with various errors are carried out first according to the theory of gearing. Then, the process of double flank gear rolling testing is simulated by applying the concept of tooth contact analysis (TCA). Tooth contact types including surface-to-surface contact and tip-to-surface interference are considered, and three possible combinations of these two contact types occurring on each tooth flanks are discussed as well. The results of this study can provide the industry a significant process to establish the analysis and capacities for double flank testing.
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Kolivand, Mohsen, Nasser Soltani, Abdolhamid Hannaneh, and Zabihollah Kargar Shoroki. "Optimization of Hypoid Gears Performance Characteristics With Typical Manufacturing and Assembly Errors." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95061.

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A procedure for calculating and optimizing hypoid gear surface performance characteristics in the presence of the most typical errors associated with machining errors of the differential housing and assembly of gears is presented. Such errors that result in mounting or position errors of hypoid gears positioning are considered in optimization procedures and basic settings of Gleason machine. The goal of this paper is to consider machining and assembling errors of differential housing unique to a given typical manufacturing line so that conditions of optimized match between gears and the differential housing of that particular manufacturing line can be achieved. During this optimization, the condition of a predetermined contact situation up to the second-order, with optimization of third-order contact situation is considered. In order to check this calculation with other methods, the results were compared to the Gleason TCA program [1]. Moreover, practical experiments of contact pattern positioning errors on hypoid tooth surfaces with a Gleason 17A Hypoid Gear Tester are done and presented.
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Reports on the topic "Tooth Contact Analysis (TCA)"

1

Tobisawa, Keiichiro, Masaki Kano, Kohei Saiki, Tsuyoshi Hanakawa, and Takeshi Yokoyama. Real Tooth Contact Analysis of Hypoid Gear Without Using Mathematical Reference Tooth Surfaces. Warrendale, PA: SAE International, May 2005. http://dx.doi.org/10.4271/2005-08-0031.

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