Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : February 28, 2017 - March 03, 2017
Vibration and noise are the key concerns in doublehelical star gear transmission system. The vibration and noise can be reduced by planet phasing whose basis is a clearly classification of the vibration mode of doublehelical star gear transmission system.
This work uses an analytical model to investigate the natural frequencies and vibration modes. In this model, the double-helical gear are treat as two helical gears with opposite spiral angle connected by massless spring which has the bending, torsion and axial stiffness. Each of the helical gears and carrier have 4 degrees of freedom with coupled lateral-torsional-axial. The natural cyclic frequencies and vibration modes of the system are calculated. Vibration modes are classified into four categories and the multiplicities and values of the eigenvalue are theoretically analyzed. For each class of these modes, reduced-order eigenvalue problems are derived.
