Effect of elastic throttling structure on the load performance of aerostatic radial bearing

Abstract

Purpose This research aims to combine the throttling structure with the elastic element to enhance the load performance of aerostatic radial bearing. Design/methodology/approach In this research, a fluid–solid coupling model of the elastic throttling structure is established while considering the interaction between the elastic element and the flow field. The effects of elastic element structural parameters on the stiffness and load capacity of aerostatic radial bearing are then researched. Finally, the effect of elastic element modulus on air film load performance and elastic element deformation is analyzed. Findings The results indicate that the aerostatic radial bearing with elastic element can significantly improve the load capacity and stiffness when compared to the common aerostatic bearing. By choosing the proper combination of parameters, the load performance can be improved by at least 16%. Originality/value The throttling structure of aerostatic bearing is optimized in this work, which significantly enhances the load performance of the aerostatic bearing.

Lubrication Performance Analysis of Tilting Pad Journal Bearing with Dynamic and Static Pressure

“…The static pressure support can effectively avoid the collision between the journal and the bearing bush, and prolong the service life of the bearing. The structure of the oil cavity makes the bearing produce dynamic pressure effect and improve the stiffness of the oil film [6][7]. Wei et al [8] established a four-shallow-cavity hybrid bearing model, and studied the static performance indexes such as bearing capacity, minimum film thickness and temperature rise of the bearing.…”