Dynamic force coefficients identification on air-lubricated herringbone grooved journal bearing
نویسندگان
چکیده
منابع مشابه
Self-acting Air-lubricated Bearing without Oil Lubrication
One of the advanced technologies incorporated into a micro gas turbine (MGT) is the dynamic air-lubricated (no oil lubrication) bearing. We investigated the performance characteristics of a self-acting air-lubricated bearing in a 50-kWe MGT. From the results of our experiments, we were able to clarify the following. (1) The thrust load of 300 N incurred by a 50kWe MGT cannot be supported by the...
متن کاملVertically-suspended Pumps with Water-lubricated Rubber Bearings -- Experimental Identification of Dynamic Stiffness Coefficients
Design and development of vertically-suspended water pumps requires good understanding of the rotor system characteristics with water-lubricated rubber bearings (WLRB). This paper presents a newly-built experimental device to simulate rotor systems with WLRBs, and some initial results on experimental identification of dynamic stiffness coefficients of a long WLRB. In experiments, unbalanced mas...
متن کاملHydrodynamically Lubricated and Grooved Biomimetic Self-Adapting Surfaces
In many machines and mechanical components, there is a need for new bearing technologies to reduce friction and wear, and provide precision control of motion when the load is varied. This can be provided by electronically controlled actuators and sensors on the surfaces, but then the system reliability can be an issue. In contrast, biomimetic surfaces can be created that adapt mechanically to v...
متن کاملStability Analysis of Three-Lobe Journal Bearing Lubricated with a Micropolar Fluids
Abstract—In this paper, the dynamic characteristics of a threelobe journal bearing lubricated with micropolar fluids are determined by the linear stability theory. Lubricating oil containing additives and contaminants is modelled as micropolar fluid. The modified Reynolds equation is obtained using the micropolar lubrication theory .The finite difference technique has been used to determine the...
متن کاملStability analysis of water-lubricated journal bearings for fuel cell vehicle air compressor
This paper presents a stability investigation of the step recessed, hydro-static and -dynamic hybrid water-lubricated journal bearings for fuel cell vehicle compressor. The dynamic coefficients and stability threshold speed of the bearings are numerically calculated by solving the turbulent Reynolds equation by using FEM. Two configuration bearings are comparatively studied and the different dy...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Mechanical Systems and Signal Processing
سال: 2020
ISSN: 0888-3270
DOI: 10.1016/j.ymssp.2019.106498