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Indexed by:期刊论文

Date of Publication:2016-03-01

Journal:JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY

Included Journals:SCIE、EI

Volume:30

Issue:3

Page Number:993-1001

ISSN No.:1738-494X

Key Words:PGT; M-DOF dynamic model; Time-varying mesh stiffness; Load-sharing; Manufacturing and assembly error

Abstract:A Multi-degree-of-freedom (M-DOF) nonlinear dynamic model for n-pinion Planetary gear train (PGT) is presented in this paper to investigate load sharing behavior of planet gears. In this dynamic model, manufacturing and assembly errors, elastic deformation and time-varying mesh stiffness are considered. Two sets of elastic compatibility equations are proposed to describe compatibility relationship between displacements, errors and elastic deformations. By means of Ishikawa formula, time-varying mesh stiffness of the gear pair is determined. The dynamic motion equations are solved with Runge-Kutta numerical integral method, which yields the displacements and deformations of each component. With the model, dynamic load sharing behavior of planet gears is evaluated. An example of 3-pinion PGT dynamic modeling is included, for which the influence of floating sun gear and adding flexible planet pin on the load sharing characteristics is analyzed.