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Relevant bibliographies by topics / Tooth contact analysis

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Academic literature on the topic 'Tooth contact analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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Journal articles on the topic "Tooth contact analysis"

1

Li, Zheng, and Ken Mao. "Frictional Effects on Gear Tooth Contact Analysis." Advances in Tribology 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/181048.

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The present paper concentrates on the investigations regarding the situations of frictional shear stress of gear teeth and the relevant frictional effects on bending stresses and transmission error in gear meshing. Sliding friction is one of the major reasons causing gear failure and vibration; the adequate consideration of frictional effects is essential for understanding gear contact behavior accurately. An analysis of tooth frictional effect on gear performance in spur gear is presented using finite element method. Nonlinear finite element model for gear tooth contact with rolling/sliding is then developed. The contact zones for multiple tooth pairs are identified and the associated integration situation is derived. The illustrated bending stress and transmission error results with static and dynamic boundary conditions indicate the significant effects due to the sliding friction between the surfaces of contacted gear teeth, and the friction effect can not be ignored. To understand the particular static and dynamic frictional effects on gear tooth contact analysis, some significant phenomena of gained results will also be discussed. The potentially significant contribution of tooth frictional shear stress is presented, particularly in the case of gear tooth contact analysis with both static and dynamic boundary conditions.

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Sun, Xiaoxiao, Liang Han, and Jian Wang. "Tooth modification and loaded tooth contact analysis of China Bearing Reducer." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 17 (June 24, 2019): 6240–61. http://dx.doi.org/10.1177/0954406219858184.

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China Bearing Reducer (CBR) is a one-stage cycloid speed reducer, which has the advantages of large transmission ratio, large load, high precision, high stiffness, and compact structure. The profile modification quality and manufacturing error of cycloid gear are the key factors affecting the transmission accuracy. In this paper, the structure of CBR is introduced first. By means of tooth contact analysis, a new parabolic profile modification method is proposed to improve the transmission accuracy. Then, by using Hertzian contact theory, force equilibrium equations and deformation compatibility conditions, a loaded tooth contact analysis algorithm of CBR is proposed to analyze the loaded transmission characteristics. According to the designed manufacturing error, the objective function is established to minimize the transmission error under nonload condition, and the particle swarm optimization algorithm is used to solve the optimal modification coefficients. Finally, the CBR25 is manufactured with the optimum modification coefficients, and the manufacturing error is measured in coordinate measuring machine to verify that it meets the design requirements. The optimal modification coefficients of CBR25 under nonload are solved based on particle swarm optimization model. Then the optimal modification coefficients are substituted to loaded tooth contact analysis to analyze the meshing contact force, contact deformation, and transmission error of CBR25. The transmission error of the CBR25 is tested on the testing rig. The error between the measured results and the calculated results of loaded tooth contact analysis is within 5%, which shows the correctness of the loaded tooth contact analysis algorithm. At the same time, the operation stability of the CBR25 is improved by using the optimal modification method.

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Shalaby, Karim H., Simona Lache, and Florin Corciova. "Contact Forces Analysis of an Analogous Huygens Pendulum Using Inverted Tooth Chain." International Journal of Materials, Mechanics and Manufacturing 4, no. 3 (2015): 195–99. http://dx.doi.org/10.7763/ijmmm.2016.v4.255.

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Wang, Yan-zhong, Can-hui Wu, Kang Gong, Shu Wang, Xing-fu Zhao, and Qing-jun Lv. "Loaded tooth contact analysis of orthogonal face-gear drives." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226, no. 9 (January 3, 2012): 2309–19. http://dx.doi.org/10.1177/0954406211432976.

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In order to analyze the transmission performance of face-gear in real working condition, a calculational approach for load equivalent error of alignment has been investigated with the purpose of analyzing the support system and tooth deformation of face-gear drives. Then, the equations of contact path of loaded tooth contact analysis have been established based on load equivalent error of alignment. For the purpose of analyzing the bearing contact, the curvatures of face-gear and pinion have been presented. Tooth contact deformation and bending deformation have been developed using elasticity and three-dimensional FEA. Loaded tooth contact analysis and contact stress have been considered to simulate the contact and meshing of the gear tooth surfaces and to calculate the evolution of load distribution, bearing contact, transmission errors, and contact stresses of the gear drive along the cycle of meshing. The performed research proves that the proposed loaded tooth contact analysis method can effectively solve the meshing characteristic problem of face-gear drives system. The results are illustrated with numerical examples.

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Li, Yuan, and Chen Zhu. "Analysis of the Multi-Tooth Meshing Effect of Three-Ring Gear Reducer." Applied Mechanics and Materials 155-156 (February 2012): 531–34. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.531.

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Three-ring reducer is a type of epicyclic gear drive with small tooth number difference and internal gear. It is different from other gear transmission, that the load shearing factor of multi tooth contact is much smaller. On the basis of analyses of geometry, tooth deformation and manufacturing errors, a mathematical model which describes the state of multi tooth contact and the load distribution characteristics of tooth was developed. The multi- tooth meshing effect of the three- ring gear reducer is studied used the finite element method and ANSYS finite element software. While three- ring gear reducer is running, the number of teeth contacted simultaneously, their load distribution characteristics and the von Mises stress change are gained.

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Li, Yuan, and Chen Zhu. "Analysis of the Multi-Tooth Meshing Effect of Three-Ring Gear Reducer." Applied Mechanics and Materials 214 (November 2012): 87–91. http://dx.doi.org/10.4028/www.scientific.net/amm.214.87.

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Three-ring reducer is a type of epicyclic gear drive with small tooth number difference and internal gear. It is different from other gear transmission, that the load shearing factor of multi tooth contact is much smaller. On the basis of analyses of geometry, tooth deformation and manufacturing errors, a mathematical model which describes the state of multi tooth contact and the load distribution characteristics of tooth was developed. The multi- tooth meshing effect of the three- ring gear reducer is studied used the finite element method and ANSYS finite element software. While three- ring gear reducer is running, the number of teeth contacted simultaneously, their load distribution characteristics and the von Mises stress change are gained.

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Chen, Y.-C., and M.-L. Gu. "Tooth contact analysis of a curvilinear gear set with modified pinion tooth geometry." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 225, no. 4 (April 2011): 975–86. http://dx.doi.org/10.1243/09544062jmes2441.

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This article investigated the contact behaviours of a modified curvilinear gear set for parallel-axis transmission, which exhibits a pre-designed parabolic transmission error (TE) and localized bearing contact. The proposed gear set is composed of a modified pinion with curvilinear teeth and an involute gear with curvilinear teeth. Tooth contact analysis enabled the authors to explore the influences of assembly errors and design parameters on TEs and contact ellipses of this gear set. It is observed that TEs were continuous and the contact ellipses were localized in the middle of the tooth flanks, even under assembly errors. Finite-element contact analysis was performed to study stress distributions under different design parameters. In addition, numerical examples are presented to demonstrate the contact characteristics of the modified curvilinear gear set.

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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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HE, Jingliang. "Tooth contact analysis of conical involute gears." Chinese Journal of Mechanical Engineering (English Edition) 19, no. 01 (2006): 105. http://dx.doi.org/10.3901/cjme.2006.01.105.

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Majchrak, M., R. Kohar, M. Lukac, and R. Skyba. "Analysis of harmonic gearbox tooth contact pressure." IOP Conference Series: Materials Science and Engineering 659 (October 31, 2019): 012068. http://dx.doi.org/10.1088/1757-899x/659/1/012068.

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Dissertations / Theses on the topic "Tooth contact analysis"

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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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9

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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Books on the topic "Tooth contact analysis"

1

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. 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. 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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7

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 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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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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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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Book chapters on the topic "Tooth contact analysis"

1

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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Solow, DDS, Roger. "Centric Relation Records and T-Scan Occlusal Analysis of Centric Relation Prematurities." In Handbook of Research on Computerized Occlusal Analysis Technology Applications in Dental Medicine, 649–71. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-6587-3.ch014.

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Occlusal analysis is the examination and diagnosis of the forces generated by the contacting surfaces of teeth. The clinician can use both mounted diagnostic casts and the T-Scan Occlusal Analysis system to understand the role of adverse forces in a patient's dentition. These casts should be mounted in Centric Relation so that they replicate the patient's hinge axis maxillomandibular relationship, absent of tooth contact. Diagnostic casts can demonstrate the mandibular slide into maximum intercuspation, as well as illustrate the excursive contacts. The T-Scan not only records the location of tooth contacts present in Centric Relation, maximum intercuspation, and lateral excursions, but also detects the timing and relative force of all contacts. The rapid display of recorded tooth contact data in the 2- and 3-Dimensional ForceViews makes it practical for intraoral operative use. These modalities can be used separately or in concert depending on the clinical situation. This chapter discusses the clinical technique, advantages, and rationale for identifying Centric Relation prematurities with mounted diagnostic casts and the T-Scan.

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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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Conference papers on the topic "Tooth contact analysis"

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Sun, Shouli, Shilong Wang, Yawen Wang, Teik C. Lim, Baocang Zhou, and Zongyan Hu. "Optimization of Hypoid Gear Design and Tooth Contact Analysis." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68407.

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Hypoid gears are effectively used in cross axis power transmission systems. Design of hypoid gear parameters is complex and dependent on designers’ experiences. In this paper, an easy approach to design the parameters of hypoid gear to obtain the minimum of maximum principle normal contact stress and peak to peak transmission error is presented. An improved Particle Swarm Optimization (PSO) and Back Propagation (BP) algorithm is proposed to predict the stress and the transmission error if certain design parameters are given. The predictive accuracy is evaluated by Root Mean Square Error (RMSE) equation. The results show that the predictive accuracy is in reasonable agreement with the values calculated by the software [1]. Based on the prediction model, the optimization model for the design parameters of hypoid gear is established. This paper proposes a method to design a set of hypoid gears with minimum of maximum principle normal stress and peak to peak transmission error.

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Simon, Vilmos V. "Computer Aided Tooth Contact Analysis in Cylindrical Worm Gears." 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-48109.

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A method for computer aided loaded tooth contact analysis in different types of cylindrical worm gears is proposed. The method covers both cases — that of the theoretical line and point contact. The geometry and kinematics of a worm gear pair based on the generation of worm gear teeth by a hob is presented. The full loaded tooth contact analysis of such a gear pair is performed. A computer program based on the theoretical background presented, has been developed. By using this program the path of contact, the potential contact lines, the separations of mating surfaces along these contact lines, the load distribution and transmission errors for different types of modified and non-modified worm gear pairs are calculated and graphically presented. The influence of gear tooth modifications on tooth contact is investigated and discussed.

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Simon, Vilmos V. "Loaded Tooth Contact Analysis and Stresses in Spiral Bevel Gears." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86164.

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The method for loaded tooth contact analysis is applied for the investigation of the influence of misalignments and tooth errors on load distribution, stresses and transmission errors in mismatched spiral bevel gears. By using the corresponding computer program the influence of pinion’s offset and axial adjustment error, angular position error of the pinion axis and tooth spacing error on tooth contact pressure, tooth root stresses and angular displacement of the driven gear member from the theoretically exact position based on the ratio of the numbers of teeth is investigated. The obtained results have shown that in general, the misalignments in spiral bevel gears worsen the conjugation of contacting tooth surfaces and in extreme cases cause edge contact with high tooth contact pressures. But, some mismatches, as are the axial movement of the pinion apex towards the gear teeth or the tip relief of pinion teeth (in this analysis it is represented by the tooth spacing error) reduce the maximum tooth contact pressure. Also it can be concluded that the misalignments and the tooth spacing errors significantly increase the angular position error of the driven gear from the theoretically exact position based on the numbers of teeth and make the motion graphs unbalanced.

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Miyoshi, Yoshikazu, Keiichiro Tobisawa, and Kohei Saiki. "Composite Analysis Method of Tooth Contact Load Distribution of Helical Gear." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34118.

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As demand for the performance improvement of automotive transmission gears increases, gear design is required that achieves high strength, low noise and high efficiency simultaneously. In addition, for high performance it is important not only to select good gear dimensions, but also to improve the tooth contact load distribution which depends on the tooth flank shape and assembly error of the gear pair. Traditional analysis methods calculate the tooth contact load distribution with integral equations that consist of the effect function of bending deflection and that of compressive deformation caused by the contact of gear teeth. However, the complicated integral equations make it difficult to instantly obtain proper results for some tooth flanks distorted by heat treatment and repetition calculation may not converge especially in light load conditions. This paper proposes a new composite analysis method which quickly calculates the tooth contact load distribution of designed or manufactured tooth flanks of helical gears in any load condition. The analytical process consists of three stages: (1) for each flank shape of a gear pair, the three-dimensional relative tooth flank shape is calculated from the actual tooth flank shape and assembly error, and the equivalent tooth profile error of the three-dimensional relative tooth flank shape is obtained by the static deflection which depends on input torque, (2) the static deflection distribution and share load on each line of contact are calculated with the obtained equivalent tooth profile error and the variable stiffness of the involute tooth pair, (3) an integral equation that consists of bending deflection and compressive contact deformation of the gear teeth is solved to obtain the tooth contact load distribution. In practical applications, the tooth contact load distribution is used to output the tooth contact pattern, tooth contact and root bending stresses, and transmission error. The prediction of tooth contact stress and transmission error contributes to the improvement of the pitting strength and gear noise of several transmissions.

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Huang, Chintien, Leo Kosasih, and Chao-Chuan Huang. "The Tooth Contact Analysis of Round Pin Jointed Silent Chains." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASME, 2005. http://dx.doi.org/10.1115/detc2005-84065.

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Tan, Xin. "The Tooth Contact Analysis of a Heavy-load Planetary Gearing." In 5th International Conference on Advanced Design and Manufacturing Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icadme-15.2015.347.

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Jacquin, Colin-Yann, Michèle Guingand, Jean-Pierre de Vaujany, and Daniel Play. "Contact Analysis of Helical Face 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-14370.

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Abstract This paper presents an analytical method developed to design and study the tooth geometry and contact characteristics of helical face gears. The tooth geometry is first defined while simulating the meshing of the face gear with the shaper used to cut it. A second meshing simulation is then performed between the face gear and the meshing pinion to determine some characteristics of kinematics, i.e. exact location of contact points, theoretical contact ratio, kinematics transmission error. The computation method is very general and allows to study several types of face gears : crossed axes or offset, varying shaft angle, spur or helical pinion. Cutting and assembling errors are also included in the simulations. The study has shown the influence of the different errors on the kinematics characteristics. Relative sensibility of helical face gears under various misalignments has been also established.

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Zhang, Y., and Z. Fang. "A Tooth Contact Analysis Model for Crossed Axis Helical Gears Under Load." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/mech-1201.

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Abstract This paper presents an approach for the analysis of tooth contact and load distribution of helical gears with crossed axis. The approach is based on a tooth contact model that accommodates the influence of tooth profile modifications, gear manufacturing errors and tooth surface deformation on gear mesh quality. In the approach, the tooth contact load is assumed to be distributed along the tooth surface line that coincides with the relative principal direction of the contacting tooth surfaces. The model in this paper provides a quantitative analysis on gear transmission errors, contact patterns and the load distribution of helical gears with crossed axes when the tooth surfaces are deformed under load. As a numerical example, the contact of a pair of helical gears with a small crossing angle is analyzed by the computer program that implements the approach.

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Zhu, Caichao, Haixia Wang, Mingyong Liu, Xuesong Du, and Chaosheng Song. "Coupled Tooth Contact Analysis of Intersected Beveloid Gears for Marine Transmissions." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-12231.

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Beveloid gears are widely applied in fields like ships, automobiles and industrial precision transmissions. In this paper, the formulas of the beveloid gear tooth surface used in marine transmissions were derived and a mesh model for the intersected beveloid gear pair was setup. Then loaded tooth contact analysis was performed using the finite element method considering the coupling of the assembly errors and the elastic deformation of tooth surface. Through the analysis, the influences of assembly errors on contact patterns, mesh force and tooth surface deformations were investigated. In a further step, the tooth profile modifications were performed to alleviate the edge contact and a subsequent major improvement of the mesh condition was obtained. Finally, loaded tooth contact experiments for marine gearboxes with small shaft angle were conducted. The tested results showed good correlation with the computed results. This work may provide some value for the practical design aiming at improved contact characteristics of the beveloid gears with intersected axes.

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Evans, H. P., R. W. Snidle, and K. J. Sharif. "Analysis of Micro-Elastohydrodynamic Lubrication and Surface Fatigue in Gear Micropitting Tests." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-47714.

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The paper describes results obtained from the micro-elastohydrodynamic lubrication (micro-EHL) modelling of the gear tooth contacts used in micropitting tests together with contact fatigue and damage accumulation analysis of the surfaces involved. Tooth surface profiles were acquired from pairs of helical test gears and micro-EHL simulations were performed corresponding to surfaces that actually came into contact during the meshing cycle. Fatigue and damage accumulation analysis shows that predicted damage is concentrated close to the tooth surfaces and this strongly suggests that micropitting damage arises from fatigue at the asperity contact level.

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Reports on the topic "Tooth contact analysis"

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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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