Abstract-Mesh stiffness is one of fundamental parameters of face gear dynamics. Thus, a calculation solution of mesh stiffness of face gear drives was constructed by finite element method. The impact of face gear rim thicknesses on mesh stiffness was predicted. The analytical results indicate that a face gear rim is thicker, average mesh stiffness is larger, but changes of average mesh stiffness would slow versus changes of face gear rim thickness. The contributions are benefit to improve the design of face gear drives associated with low vibrations.
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