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dynamic response of a planetary gear system using a finite element/contact mechanics modelThe dynamic response of a helicopter planetary gear system is examined over a wide range of operating speeds and torques. The analysis tool is a unique, semianalytical finite element formulation that admits precise representation of the tooth geometry and contact forces that are crucial in gear dynamics. Importantly, no a priori specification of static transmission error excitation or mesh frequency variation is required; the dynamic contact forces are evaluated internally at each time step. The calculated response shows classical resonances when a harmonic of mesh frequency coincides with a natural frequency. However, peculiar behavior occurs where resonances expected to be excited at a given speed are absent. This absence of particular modes is explained by analytical relationships that depend on the planetary configuration and mesh frequency harmonic. The torque sensitivity of the dynamic response is examined and compared to static analyses. Rotation mode response is shown to be more sensitive to input torque than translational mode response.
Document ID
20010070088
Document Type
Reprint (Version printed in journal)
Authors
Parker, Robert G.
(Ohio State Univ. Columbus, OH United States)
Agashe, Vinayak
(Ohio State Univ. Columbus, OH United States)
Vijayakar, Sandeep M.
(Advanced Numerical Solutions Hilliard, OH United States)
Date Acquired
August 20, 2013
Publication Date
September 1, 2000
Publication Information
Publication: Transactions of the ASME
Volume: 122
Subject Category
Mechanical Engineering
Report/Patent Number
AD-A386731
ARO-40056.5-EG-YIP
Funding Number(s)
CONTRACT_GRANT: DAAD19-99-1-0218
CONTRACT_GRANT: NAG3-11979
Distribution Limits
Public
Copyright
Other