...Sripathi Vangipuram Canchi; David B. Bogy Thermal fly-height control sliders are widely used in current hard disk drives to control and maintain subnanometer level clearance between the read-write head and the disk. The peculiar dynamics observed during touchdown/contact tests for certain slider...

...Nick Weinzapfel; Farshid Sadeghi A model for deep-groove and angular-contact ball bearings was developed to investigate the influence of a flexible cage on bearing dynamics. The cage model introduces flexibility by representing the cage as an ensemble of discrete elements that allow deformation...

...Tomoya Sakaguchi; Kazuyoshi Harada In order to investigate cage stress in tapered roller bearings, a dynamic analysis tool considering both the six degrees of freedom of motion of the rollers and cage and the elastic deformation of the cage was developed. Cage elastic deformation is equipped using...

...Tomoya Sakaguchi; Kazuyoshi Harada A three-dimensional dynamic simulation analysis of a tapered roller bearing was performed using commercially available software. Without cage pocket shape simplification, the dynamic motion of the cage and rollers was calculated in six degrees of freedom...

...Czeslaw Kundera, Faculty of Mechatronics and Mechanical Engineering, The paper deals with a dynamic analysis of a non-contacting seal with two flexibly mounted rotating rings. The kinematics of motion is described and the equations of dynamics derived. Hydromechanical forces and moments containing...

...Stefan Weissner; Uwe Zander; Frank E. Talke A new beam suspension model for load/unload simulations of magnetic hard disk drive sliders is presented. The model is applicable to the load/unload process as well as to the dynamic flying behavior of the slider on the disk. Suspension and gimbal...

... by the Tribology Division April 6, 2000; revised manuscript received May 22, 2001. Associate Editor: J. L. Streator. 06 April 2000 22 May 2001 24 09 2002 machine bearings manufacturing processes micromechanical devices dynamics performance evaluation This work was made...

... as a forced vibration caused by the rotor motion due to its runout and misalignment. The seal steady-state dynamic responses are solved semianalytically. Results for a typical spiral groove gas face seal agree well with that from a full numerical simulation. Stability of the seal axial pulsating and conical...

...Bo Ruan A numerical model is developed for the dynamic analysis of gas lubricated spiral groove face seals. Effects of the rotor runout, misalignment, face contact, as well as the stiffness and damping of the secondary seal are considered. Seal axial and angular motions and key parameters...

... received June 5, 2001. Associate Editor: S. Wu. 20 February 2001 05 June 2001 seals (stoppers) rotors leak detection dynamics tribology Figure 1 illustrates a section from a centrifugal compressor showing an eye-packing, interstage, and balance-piston seals. The eye...

...M. O. T. Cole; P. S. Keogh; C. R. Burrows The dynamic behavior of a rolling element bearing under auxiliary operation in rotor/magnetic bearing systems is analyzed. When contact with the rotor occurs, the inner race experiences high impact forces and rapid angular acceleration. A finite element...

..., and with the largest minimum film thickness. The stability issue was investigated in a previous paper. Here a numerical solution is presented for the transient response of a noncontacting gas lubricated face seal that is subjected to stator and rotor forcing misalignments. The seal dynamic response is obtained...

...A. T. Prata; J. R. S. Fernandes; F. Fagotti Piston dynamics plays a fundamental role in two critical processes related to fluid flow in reciprocating compressors. The first is the gas leakage through the radial clearance, which may cause considerable loss in the pumping efficiency of the compressor...