..., and maximum contact area of asperity, and negatively correlated with fractal roughness; tangential contact damping increases first and then decreases with the increase of three-dimensional fractal dimension. The results of computational and experimental modal analysis show that the established mathematical...

...Jianhua Li; Junguo Xu; Yuki Shimizu; Masayuki Honchi; Kyosuke Ono; Yukio Kato Perturbation and modal-analysis methods were employed to systematically study a damped slider’s dynamic characteristics, including an air-bearing slider’s stiffness, damping coefficient, frequency response to translation...

... of the linear stability analyses. The orbit simulations show the three-pad bearings have higher onset speeds of instability than circular bearing ( 47,000 rpm versus 24,000 rpm ). foils machine bearings rotors modal analysis damping foil bearing stability orbit simulation parametric studies...