F-0341 Experimental Study on Resonance Frequency Behavior of Three-dimensional, Thin-rimmed Gears

Abstract

This paper investigates resonance frequency behavior of three-dimensional, thin-rimmed spur gears (3DTRG) by experimental methods. Resonance frequencies and mode shapes of the 3DTRG are measured and compared with solid gears with the same gearing parameters at the speed range of 500 to 3000rpm. Critical speeds of the 3DTRG are measured also. Fourier Transformation is used to analyze frequency components of the vibration signals at critical speeds. It is found that there are several resonance frequency components existing in the same time at gear's critical speeds and the 4^<th> order rim bending structural vibration is a very important vibration mode that make amplitude of vibration signal very big. Effects of gear wall thickness, teeth mesh stiffness and assembly errors on resonance frequencies and dynamic load factors of the 3DTRG are investigated experimentally.