The contact condition has a significant effect on the bearing stiffness, and water film friction damping has a significant effect on bearing damping. In the mixed lubrication, water film, rubber, and contact jointly determine dynamic characteristics of water-lubricated rubber bearings. The results show that when rotational speed is less than 700 r/min, even if specific pressure is 0.05 MPa, it is difficult to form complete water film for the rubber bearing which was investigated, and contact friction and collision of the shaft and bearing are frequent. Dynamic performance tests under different conditions are operated. This paper establishes a test rig to simulate shaft misalignment and proposes an identification method for water-lubricated rubber bearings, which utilizes rotor unbalanced motion to produce self-excited force rather than artificial excitation. Due to mixed lubrication state of water-lubricated rubber bearings, normal test rig and identification method are not applicable. Accurate dynamic characteristic coefficients of water-lubricated rubber bearings are necessary to research vibration of ship propulsion system.
1 Comment
Julian
1/30/2023 03:47:48 pm
Thanks a lot for these pointers about propeller shafts. Thanks for this! I want to share a company that provide my driveshaft needs. "GJ Drivelines". https://gjdrivelines.com.au They have great mechanical servicing, with expertise in bearing service, as well as driveline services. Thanks again!
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