A Review of Formulas for the Mechanical Efficiency Analysis of Two Degrees-of-Freedom Epicyclic Gear Trains

Author:

Pennestrı` Ettore1,Valentini Pier Paolo1

Affiliation:

1. Dipartimento di Ingegneria Meccanica, Universita` degli Studi di Roma Tor Vergata, 0133 Roma-Italy

Abstract

This paper, after a rigorous proof of the formulas originally proposed by Radzimovsky, demonstrates the numerical equivalence of the different approaches available for computing the mechanical efficiency of two degrees-of-freedom (d.o.f.) epicyclic gear trains. The paper includes also a discussion on the redundancy of data required by some formulas.

Publisher

ASME International

Subject

Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials

Reference19 articles.

1. Radzimovsky, E. I. , 1959, “How to Find Efficiency, Speed and Power in Planetary Gear Drives,” Machine Design, June 11, pp. 144–153.

2. Pennestrı`, E., 1991, “On the Automatic Design Analysis of Gear Trains,” Doctoral Dissertation, Columbia University, Available from U.M.I., Order n.9127952.

3. Pennestrı`, E., and Freudenstein, F., 1993, “The Mechanical Efficiency of Epicyclic Gear Trains,” ASME J. Mech. Des., 115, pp. 645–651.

4. Hsieh, H. L., and Tsai, L. W., 1998, “The Selection of a Most Efficient Clutching Sequence Associated with Automatic Transmissions,” ASME J. Mech. Des., 120, pp. 514–519.

5. Hedman, A., 1988, Mechanical Transmission Systems—A General Computer-based Method of Analysis, Chalmers University of Technology, Division of Machine Elements, Go¨teborg.

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