Abstract
Integral elastic ring squeeze film damper (IERSFD) is proposed to reduce and isolate the vibration of the gear transmissions. IERSFD offers the performance of a low radial stiffness and high squeeze film damping. This paper presents a mechanical model of an IERSFD elastic damping support and a single-degree-of-freedom vibration isolation system for the gear system. An open single-stage spur gear system was built to experimentally study the vibration characteristics of gear transmissions with rigid supports and with IERSFD elastic damping supports filled with damping fluids of different viscosities. The experimental results show that the IERSFD can effectively reduce the peak vibration acceleration of the gear shafts and can guarantee the smooth operation of the gear assembly over a range of speeds. This work shows that an IERSFD can reduce the shock and vibration of the gears’ meshing. It effectively attenuates vibration for most of the gears’ frequency components. Within a limited viscosity range, the vibration reduction is more effective with the higher-viscosity IERSFD damping fluids tested.
Highlights
Geared transmissions are one of the most widely used power transmission methods in mechanical engineering
An integral elastic ring squeeze film damper (IERSFD) was designed and used to reduce and isolate vibrations generated by gear mesh excitation
The vibration of the gear shafts was measured both for the base case of installation on rigid supports and the test case with the Integral elastic ring squeeze film damper (IERSFD) elastic damping supports filled with the 500cs viscosity damping fluid
Summary
Geared transmissions are one of the most widely used power transmission methods in mechanical engineering. If the damper design is unreasonable, the rotor vibration will increase instead of decrease To overcome these shortcomings, an integral elastic ring squeeze film damper (IERSFD) was designed and used to reduce and isolate vibrations generated by gear mesh excitation. The IERSFD described in this paper is designed to control the vibration of gear shafts and isolate the vibration excitation through the bearings to the supporting structure. IERSFD has both the performance of a low radial stiffness and high squeeze film damping, which can provide viscous damping to reduce the lateral vibration amplitude of the gear system and to isolate vibration transmitted to other structural parts.
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