Finite Element Analysis of Multispeed Noncircular Gears

Author:

Cristescu Ana1,Cristescu Bogdan1,Andrei Laurenţia1

Affiliation:

1. Universitatea Dunărea de Jos din Galaţi

Abstract

A multispeed gear train is designed based on a prescribed gears transmission ratio variation, specific to an industrial application that requires two uniform rotational motions, with different speeds, during the functioning cycle. The transitions between the uniform motions occur at continuously variable speeds, as a consequence of the trigonometric and power functions that are chosen to describe the transmission ratio variation. Based on the predefined kinematics, the multispeed gears pitch curves are modelled, and the teeth generation is completed by combining analytical and computerized graphics methods. The finite element analysis is applied to the gears solid models in order to investigate the influence of the transmission ratio defining parameters on the gear tooth bending state, as criteria in the further optimisation of the multispeed gears design.

Publisher

Trans Tech Publications, Ltd.

Reference6 articles.

1. Gears and Gear Drives, Motion Sistem Design, 2001, 145–160, available at http: / www. emersonindustrial. com/en-US/documentcenter/PowerTransmissionSolutions/Product Fundamentals/gears2. pdf.

2. F. Litvin, et al., Noncircular gears. Design and generation, Cambridge University Press, (2009).

3. G. A. Danieli, D. Mundo, New developments in variable radius gears using constant pressure angle teeth, Mechanism and machine theory, 40 (2005) 203–217.

4. A. Cristescu, L. Andrei, M. Niculescu, The Influence of Kinematics Variation on Multispeed Gears Meshing, IMANE Iasi. (2015) (in press in Applied Mechanics and Materials).

5. M. Vasie, L. Andrei, Design and Generation of Noncircular Gears with Convex-Concave Pitch Curves, The Annals of Dunărea de Jos University of Galaţi, Fascicle V (2012) 55–60.

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