A novel gas foil bearing with negative Poisson's ratio structure and embedded damping materials: Numerical and experimental investigations

Abstract

To enhance the damping characteristic of traditional gas foil bearings (GFBs), this paper proposed a novel gas foil bearing with negative Poisson’s ratio structure, double-arrow structure (DAS), and embedded damping materials (DMs). A numerical model for the novel gas foil bearing with double-arrow structure and damping materials (DASDM-GFBs) was presented by coupling the model of double-arrow structure, the Reynold equation and the finite element model of the top foil. The static load-deformation tests and dynamic load tests are carried out to investigate the static and dynamic characteristics. Furthermore, the static and dynamic characteristics of DASDM-GFBs are predicted. The influence of DAS parameter, number and circumference distribution position are explored. These data expand the path for the improvement of damping performance in GFBs.