...-sliding fretting wear finite element analysis dynamic response contact interface During the service period, the combined flow-induced vibration action of the high-temperature and high-pressure liquid media that rapidly flow inside and outside steam generator tubes results in the occurrence...

...J. S. Issa; W. Habchi The current work investigates the influence of real lubricant density–pressure behavior on the dynamic response of elastohydrodynamic lubricated conjunctions. Such a response is often based on a nonrealistic universal equation of state, despite longstanding evidence of its...

... the frequency-dependent character of dynamic coefficients because the bearing vibration satisfies the superposition principle. The improved dynamic modeling approach is able to accurately and efficiently predict the overall dynamic response of the thrust plate with both axial and tilting motion when the plate...

... and compared with the general model. The results show that by using the improved DTE model, the comprehensive stiffness and comprehensive damping of the gear increase and fluctuate slightly. The amplitude of the tooth surface meshing force and dynamic response decreases. Under the action of tooth surface...

... and experimental results indicate that the proposed model would achieve a more appropriate and accurate dynamic simulation. Fig. 11 Dynamic response obtained by the new displacement excitation function for defect case 2 under 2000 rpm: ( a ) Y -direction acceleration and ( b ) enlarged vibration waveform...

...Chen Xiulong; Jia Yonghao The goal of this work is to investigate the dynamic responses of the parallel mechanism with irregular clearances caused by wear and to further reveal the influences of multiple clearance interaction on wear. The motion model and the force model of spherical clearance...

...J. Wileman This work provides an analytical technique for computing the seal face misalignment which results from synchronous whirl of the shaft. The eccentric dynamic response is obtained for seals in which both mating faces are mounted on flexible supports. Responses for seals with a single...

... . Manuscript received by the Tribology Division May 6, 2002 revised manuscript received November 12, 2002. Associate Editor: L. san Andre´s. 06 May 2002 12 November 2002 25 09 2003 seals (stoppers) vibrations dynamic response rotors film flow flow simulation elasticity...

... therefore been focused on designing annular seals satisfying the above specifications, and various seal configurations have been proposed. seals (stoppers) pumps flow measurement elasticity damping geometry dynamic response rough surfaces 2003 ASME ...

... machine bearings disc drives dynamic response mechanical stability rotation geometry elasticity finite element analysis In recent years, computer hard disk drives (HDDs) require fast, quiet and reliable operation in addition to having high storage capacity. Traditionally, a spindle motor...

... in the last section is a universal model and can be used to find the dynamic response of the seal under all kinds of excitations. However, when this sub-model is used to compute dynamic tracking, a practical problem arises: the computing time is excessively long, since only a very small step size, for example...

... within a few percent of the results from a full nonlinear numerical simulation. 27 October 2002 16 April 2002 25 July 2002 19 03 2003 seals (stoppers) rotors stators dynamic response elasticity damping stability flow a 11 , a 12 , a 21...

... mechanical contact dynamic response force elasticity adhesion compressibility potential energy functions intermolecular mechanics The approach and separation of a sphere and a flat represents a fundamental dynamic contact problem. In some sense, it is a natural extension of the classical...

... elasticity damping dynamic response mechanical engineering At the present time there are mathematical models of gas journal bearings based on the partial differential Reynolds equation. Attempts at analytical solution of the linearized time-dependent Reynolds equation have been made...

... received July 27, 1999. Paper No. 99-Trib-47. Associate Technical Editor: C-P. R. Ku. 10 October 1999 05 February 1999 27 July 1999 disc drives impact (mechanical) dynamic response failure (mechanical) magnetic heads magnetic disc storage In order to encourage disk...

... June 1999 magnetic heads magnetic disc storage stress analysis dynamic response deformation impact (mechanical) wear Due to its stiction-free and potentially better nonoperating shock resistance characteristics, dynamic load/unload is a promising alternative for contact start/stop...