Research on the pressure field and loading characteristics of air film of air cushion belt conveyor

In order to obtain the loading capacity and its variation of the squeeze-film air bearing, taking an air bearing as the research object, the structure model and the equivalent disk model of the squeeze-film air bearing are established. The modal analysis of the designed structure is carried out, the mode of the bearing structure in the ultrasonic frequency range and the working squeeze frequency of the bearing are obtained. At the same time, the influence of air film thickness on the load characteristics of squeeze-film air bearing is analyzed by the fluid-solid coupling method. The relationship between air film thickness and loading capacity, and the relationship between contact area and loading capacity are obtained respectively by above method. The results show that reducing the gap between the bearing bush and the rotor, increasing the amplitude of the bearing bush and increasing the contact area between the bearing bush and the rotor can improve the loading capacity of the squeeze-film air bearing.

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Research on the Load Characteristics of Squeezed Film Gas Bearings

Du,

Xu,

Lan

et al. 2024

Shock and Vibration

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In this paper, a gas microbody is proposed to address the issues related to the limited load‐carrying capacity of squeezed film gas bearings, complex mechanical structures, large overall dimensions, high manufacturing costs, and complicated installation. Initially, the gas continuity equation of squeezed film was established for modal analysis, without regard to the gas inertial force and the gas volume force which are all far less than the gas viscous force. Then the load‐carrying characteristics of squeezed film gas bearing were studied and analyzed with the fluid‐structure coupling method. The load‐carrying capacity of the squeezed film gas bearing is determined by factors such as bearing amplitude, rotor‐axial clearance, and rotor‐axial tile contact area. In conclusion, the load‐carrying capacity can be enhanced by increasing the amplitude value, reducing the clearance, and increasing the contact area. Among them, when adjusting the amplitude and clearance to improve the bearing’s load‐carrying capacity, the stability of bearing operation should be considered. When the clearance is too small, the pressure distribution of the air film will be uneven, and when the contact area is too large, the development of the air film in all directions will be asymmetrical.

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Research on the pressure field and loading characteristics of air film of air cushion belt conveyor

Cited by 5 publications

References 17 publications

Numerical simulation and experimental study of the influence of disk groove structure optimization on the air film flow field signature of an air-cushion sandwich belt conveyor

Numerical simulation and experimental study of the influence of disk groove structure optimization on the air film flow field signature of an air-cushion sandwich belt conveyor

Research on load characteristics of squeeze-film air bearings based on fluid–solid coupling

Research on the Load Characteristics of Squeezed Film Gas Bearings

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