Bibliographies thématiques / Asymmetric gear optimization

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Littérature scientifique sur le sujet « Asymmetric gear optimization »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 8 février 2022

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Articles de revues sur le sujet "Asymmetric gear optimization"

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Cvetanov, Genadi, et Tsanko Karadzhov. « GEOMETRIC SYNTHESIS OF INVOLUTE PLANETARY GEARS WITH CONNECTED GEAR WHEELS OF TYPE 2K-H ». ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (16 juin 2021) : 49–53. http://dx.doi.org/10.17770/etr2021vol3.6643.

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Based on the basic law of flat interlocking, the paper considers a possibility of increasing the gear ratio of low module involute cylindrical planetary gears by using asymmetric tooth profile for the purposes of measuring devices. An example of the synthesis of such reduction gearing by optimal choice of asymmetry between the profiles and Possibility of generation III is presented. Also presented is a planar matching of the unconditional existence areas in the field of independent coefficients of instrument displacement by the straight optimization method and pre-set qualitative indicators of the gearing.
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Vaghela, Priyakant, et Jagdish Prajapati. « Optimization of Tooth Root Profile Using Bezier Curve with G2 Continuity to Reduce Bending Stress of Asymmetric Spur Gear Tooth ». MATEC Web of Conferences 237 (2018) : 03010. http://dx.doi.org/10.1051/matecconf/201823703010.

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This research describes simple and innovative approach to reduce bending stress at tooth root of asymmetric spur gear tooth which is desire for improve high load carrying capacity. In gear design at root of tooth circular-filleted is widely used. Blending of the involute profile of tooth and circular fillet creates discontinuity at root of tooth causes stress concentration occurs. In order to minimize stress concentration, geometric continuity of order 2 at the blending of gear tooth plays very important role. Bezier curve is used with geometric continuity of order 2 at tooth root of asymmetric spur gear to reduce bending stress.
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Muni, D. V., V. S. Kumar et G. Muthuveerappan. « Optimization of Asymmetric Spur Gear Drives for Maximum Bending Strength Using Direct Gear Design Method# ». Mechanics Based Design of Structures and Machines 35, no 2 (11 avril 2007) : 127–45. http://dx.doi.org/10.1080/15397730701196637.

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De Martin, Andrea, Giovanni Jacazio et Massimo Sorli. « Optimization of Gerotor Pumps with Asymmetric Profiles through an Evolutionary Strategy Algorithm ». Machines 7, no 1 (1 mars 2019) : 17. http://dx.doi.org/10.3390/machines7010017.

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Gerotor pumps are widely used for fuel and lubricating oil distribution, since they provide an economic and compact solution for low-pressure fluid systems. Made of two internally coupled gears, their behavioral and operative performances are strictly tied to their geometrical designs. Traditionally, the external gear features circular lobes that give origin to a cycloidal profile for the internal rotor. In this paper, the use of profiles based on asymmetric lobes made of elliptic arcs is further explored and expanded. At first, a complete mathematical framework describing the pump geometry and its dynamic behavior is provided, while algorithms used to compute a selected number of performance indexes are presented and when possible, verified. Hence, a single-objective optimization procedure is applied to the traditional cycloidal profile, in order to minimize each of the following quantities: the flow rate irregularity, the expected wear rate, and the estimated rotor mass. Finally, a multi-objective optimization process based on evolutionary strategy is employed, to obtain several asymmetric profiles minimizing the combination of two or more performance indexes. The results are hence compared, and the merits associated with the use of asymmetric lobes are presented.
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Senthil Kumar, V., D. V. Muni et G. Muthuveerappan. « Optimization of asymmetric spur gear drives to improve the bending load capacity ». Mechanism and Machine Theory 43, no 7 (juillet 2008) : 829–58. http://dx.doi.org/10.1016/j.mechmachtheory.2007.06.006.

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A. Phalake, Atul, et Abhay A. Utpat. « Optimization of Tooth Fillet Profile of Spur Gear with Asymmetric Tooth to Analyse the Bending Stress Concentration at Root of Tooth ». International Journal of Engineering Trends and Technology 36, no 3 (25 juin 2016) : 151–54. http://dx.doi.org/10.14445/22315381/ijett-v36p228.

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Kołodziej, Janusz, Marcin Kowol, Piotr Mynarek, Rafał Gabor et Marian Łukaniszyn. « Forces in Axial Flux Magnetic Gears with Integer and Fractional Gear Ratios ». Energies 14, no 4 (6 février 2021) : 855. http://dx.doi.org/10.3390/en14040855.

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This paper presents a comparison of two variants of an axial flux magnetic gear (AFMG), namely, with integer and fractional gear ratios. Based on calculations derived with the use of three-dimensional numerical models, the torque characteristics of the analyzed AFMGs are computed and verified on a physical model. The greatest emphasis is put on the detailed decomposition and analysis of local forces in modulator pole pieces (also used in the structural analysis) within the no-load and maximal load conditions. The authors also describe the unbalanced magnetic forces (UMF) in the axial and radial directions resulting from the construction of the considered AFMGs variants, and their possible effects in the context of the use of additive manufacturing (AM) in prototypes. The paper also proposes an effective method for limiting the axial strain by using the asymmetry of the air gaps, which slightly reduces the torque transmitted by AFMGs. Finally, a static strength analysis was presented that allows us to assess the effects of local forces in the form of modulator disc deformation for selected cases of air gap asymmetry.
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Pedersen, Niels L. « Improving bending stress in spur gears using asymmetric gears and shape optimization ». Mechanism and Machine Theory 45, no 11 (novembre 2010) : 1707–20. http://dx.doi.org/10.1016/j.mechmachtheory.2010.06.004.

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LAI, YINAN, MINGZHU LAI, BINDI YOU et YANGTAO YU. « IMPROVED ALGORITHM AND REALIZATION OF MECHANICAL MULTI-PARAMETER FUZZY OPTIMIZATION ». Journal of Advanced Manufacturing Systems 07, no 01 (juin 2008) : 183–86. http://dx.doi.org/10.1142/s0219686708001334.

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Aiming at the problem of low efficiency and local optimum caused by traditional multi-objective fuzzy optimal methods, the multi-parameter fuzzy optimal mathematical models with improved symmetry and improved asymmetry genetic algorithm based on the overall optimal view are given by considering optimal membership of objectives and constraint. The best optimal solution and optimal constraint value of sub-objective function in the feasible field are found by the mathematical model. The example for helical gear with objective and constraint sets is demonstrated. The algorithm of multi-objective fuzzy optimization is realized by applying the Matlab optimum toolbox. Matlab program to realize multi-parameter fuzzy optimal GA of the helical gear is developed, the best optimal solutions of several fuzzy optimal models is obtained, and the penalty function is used to solve the problem of nonlinear constraint. The result shows that improved fuzzy GA can get satisfying results both in the computing speed and the quality of solution. The method can reflect fuzziness of the problems and practicability of the structure of the engineering project.
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Plesu, Gh, et S. Cazan. « On the optimization of the asymmetric spur gears fillet geometry using Bézier curves ». IOP Conference Series : Materials Science and Engineering 145 (août 2016) : 022013. http://dx.doi.org/10.1088/1757-899x/145/2/022013.

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Thèses sur le sujet "Asymmetric gear optimization"

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Müller, Tim. « Development of asymmetric gears with Creo Simulate ». Technische Universität Chemnitz, 2018. https://monarch.qucosa.de/id/qucosa%3A21514.

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Grundgedanke: • Erhöhung der Tragfähigkeit der Verzahnung (Flanke, Fuss) durch ein asymmetrisches Bezugsprofil Umsetzung: • Aufbau eines parametrischen FE-Zahnradmodells für asymmetrische Verzahnungen in Creo Simulate • Automatisierte FE-Simulation einer Vielzahl an Lösungsvarianten mit Multiziel-Konstruktionsstudie • Auswertung der Ergebnisse mit Hilfe einer Nutzerwertanalyse • Zeichnungserstellung und Fertigungsbetreuung Potenziale: • Reduzierung der Verzahnungsbreite um ca. 10%
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Schumann, Stefan. « Möglichkeiten und Grenzen asymmetrischer Kegelradverzahnungen ». Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-170928.

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Durch neue, hochflexible Fertigungsverfahren wie das Freiformfräsen eröffnet sich für Kegelradverzahnungen ein großes geometrisches Optimierungspotenzial. Diese Arbeit widmet sich daher der Ermittlung einer optimalen Makro-, Mikro- und Zahnfußgeometrie für bogenverzahnte Kegelräder. Neben dem Zahnprofil und der Zahnfußkurve wird besonderes Augenmerk auf die Ermittlung topologischer Flankenmodifikationen zur Maximierung der Tragfähigkeit gelegt. Gleichzeitig bietet der gezeigte Optimierungsalgorithmus die Möglichkeit zur Minimierung der Geräuschanregung, wodurch der bisher existierende Zielkonflikt zwischen diesen beiden Aspekten aufgehoben werden kann.
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Schumann, Stefan. « Möglichkeiten und Grenzen asymmetrischer Kegelradverzahnungen ». Doctoral thesis, 2014. https://tud.qucosa.de/id/qucosa%3A28750.

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Durch neue, hochflexible Fertigungsverfahren wie das Freiformfräsen eröffnet sich für Kegelradverzahnungen ein großes geometrisches Optimierungspotenzial. Diese Arbeit widmet sich daher der Ermittlung einer optimalen Makro-, Mikro- und Zahnfußgeometrie für bogenverzahnte Kegelräder. Neben dem Zahnprofil und der Zahnfußkurve wird besonderes Augenmerk auf die Ermittlung topologischer Flankenmodifikationen zur Maximierung der Tragfähigkeit gelegt. Gleichzeitig bietet der gezeigte Optimierungsalgorithmus die Möglichkeit zur Minimierung der Geräuschanregung, wodurch der bisher existierende Zielkonflikt zwischen diesen beiden Aspekten aufgehoben werden kann.
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Chapitres de livres sur le sujet "Asymmetric gear optimization"

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Kapelevich, Alexander L. « Gear Geometry Optimization ». Dans Asymmetric Gearing, 97–146. CRC Press, 2018. http://dx.doi.org/10.1201/b22441-5.

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Kapelevich, A. L., et Y. V. Shekhtman. « Optimization of asymmetric tooth root generated with protuberance hob ». Dans International Conference on Gears 2019, 403–14. VDI Verlag, 2019. http://dx.doi.org/10.51202/9783181023556-403.

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Kapelevich, A. L., et Y. V. Shekhtman. « Root fillet optimization of thin rim planet gears with asymmetric teeth ». Dans International Conference on Gears 2017, 741–50. VDI Verlag, 2017. http://dx.doi.org/10.51202/9783181022948-741.

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Kapelevich, Alexander L., et Yuriy V. Shekhtman. « Analysis and optimization of contact ratio of asymmetric gears ». Dans Power Engineering, 437–42. CRC Press, 2016. http://dx.doi.org/10.1201/9781315386829-68.

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Actes de conférences sur le sujet "Asymmetric gear optimization"

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Dharashivkar, Narayan S., Vilas B. Sondur et Krishnakumar D. Joshi. « 3D photoelastic and finite element analysis of Asymmetric Involute Spur Gear ». Dans 2016 International Conference on Electrical, Electronics, and Optimization Techniques (ICEEOT). IEEE, 2016. http://dx.doi.org/10.1109/iceeot.2016.7755006.

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Devendran, Ram Sudarsan, et Andrea Vacca. « Design Potentials of External Gear Machines With Asymmetric Tooth Profile ». Dans ASME/BATH 2013 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fpmc2013-4473.

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This paper describes the design, optimization and the performance potentials of external gear machines with asymmetric tooth profiles. Conventionally, the design of these machines is entirely based on symmetric involute profile. A design method has been developed to derive the tooth profiles based on a modified rack-cutter profile which is assumed to be used for manufacturing the gears with asymmetric involute surfaces and trochoidal fillet profiles. The study is based on the simulation tool HYGESim (HYdraulic GEar machines Simulator) which is being developed and has been validated by the authors’ research group to accurately analyze the performance of the machine. For the purpose of this research, HYGESim was adapted to simulate the particular case of non-symmetric gear profiles. A specific optimization procedure based on genetic algorithm was implemented to find the maximum performance of the new design, in terms of volumetric efficiency, fluid borne noise, internal pressure peaks and localized cavitation acting on the design parameters that characterize the tooth profile. The results of the optimization process are compared to the current state of the art for external gear machines. This comparison show very high potentials for this new design principle, particularly concerning the reduction of the fluid borne noise.
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Kapelevich, Alexander L., et Viacheslav M. Ananiev. « Gear Transmission Density Maximization ». Dans ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-47021.

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Maximization of the gear transmission density presents an important task. It allows to increase the output torque within given dimensional constrains that is critical, for instance, in racing gearboxes, or to reduce size and weight of aerospace gear drives. It can also lead to reduced costs for automotive and consumer product gear trains, etc. There are several ways to increase gear drive load capacity, including advanced design, materials, and technologies. This paper presents an approach that allows optimizing gearbox kinematic arrangement and gear tooth geometry to achieve high gear transmission density. It introduces dimensionless gearbox volume functions, which can be minimized by the internal gear ratio optimization. Different gearbox arrangements are analyzed to define a minimum of the volume functions. Application of the asymmetric gear tooth profiles power density maximization is also considered.
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Qiu, Kevin, et Reza Samadi. « Numerical Simulation for Optimizing Tooth Profile Using Bezier Curve ». Dans 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/detc2019-97009.

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Abstract The research hereby introduces a novel approach to reduce tooth bending stress using a parametric numeric simulation. This Finite Element Method (FEM) is used to determine optimal design variables for an asymmetric root profile of a helical gear defined by a rational cubic Bezier curve. The gear is first modelled using a machine design software and later implemented into a 3D computer aided design (CAD) package to modify the root spline geometry using a script. A nonlinear relationship exists between the design variables and tooth bending stress. Additionally, certain trends exist between the design variables to exhibit a more optimal root profile. The simulation results show that the proposed method is feasible as the general optimization process results in significant bending stress reduction. The numerical simulation demonstrates that bending stress can be reduced by as much as 10.75% by the proposed approach.
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