... reported that the response time for the alignment of the particles in MR fluid is less than 0.5 ms [ 16 ]. It has also been shown that a damper in the range of kN damping force can be constructed to operate within a response time of 2 ms [ 17 ]. The MR fluid used in this study is the MRF-132DG (Lord...

... the peaks, defining the operational frequency region. The sense-mode resonant frequency lies within this region at 1.868 kHz allowing the amplitude of the response to be insensitive to structural parameter and damping variations, with improved robustness against such variations. The passive mass achieved...

... uncertain damping coefficients. Based on the example, the concept of balancing expected performance and risk is explored in an engineering context. Risk is quantified using aleatory uncertainty for fixed values of epistemic uncertainty. The study shows the unique features of this approach in which risk...

... vibrations. Passive micromachined silicon low-pass filter structures (spring-mass-damper) have been demonstrated in recent years. However, the performance of these filter structures is typically limited by low damping. This is especially true if operated in low pressure environments, which is often...

... of curvature, and contact stress, and also reduces the residual vibrations caused by deviations in actual cam speed or system damping ratio from their design values. 15 02 2008 27 12 2008 20 03 2009 It is necessary to point out that the boundary condition 5 does not exclude any boundary...

...Song He; Todd Rook; Rajendra Singh Gear dynamic models with time-varying mesh stiffness, viscous mesh damping, and sliding friction forces and moments lead to complex periodic differential equations. For example, the multiplicative effect generates higher mesh harmonics. In prior studies, time...

... transmission error, and responses are derived to both initial conditions and the forced periodic function under a nominal preload. Analytical models are validated by comparing predictions with numerical simulations, and the effect of viscous damping is examined. Stability analysis is also briefly conducted...

.... The computation of the load sharing is described and uses the equation of displacement compatibility. The history of previous deformation and the effect of the nylon’s structural damping are taken into account. At a given constant temperature, the load sharing, meshing stiffness, and loaded transmission error...

... of a prototype vehicle that has torsion damper as a torsional coupling. Finally, we analyzed and compared the launching performances in two cases of a torsion damper and a dual mass flywheel using the developed simulation program. road vehicles automotive components torsion damping vibration control...

... by the Mechanisms and Robotics Committee for publication in the JOURNAL OF MECHANICAL DESIGN . Manuscript received November 4, 2003; revised April 27, 2004. Associate Editor: J. S. Rastegar. 04 November 2003 27 April 2004 02 03 2005 vibration control damping control system synthesis...

... 14 02 2005 vibration control open loop systems transfer functions product design damping Machines that are driven by high-speed cams are widely used in the high-volume manufacturing of small metal parts. Cams are used to control the actions of the machines, such as stock...

... system were studied experimentally and numerically. Time varying roller mesh stiffness and damping coefficients were used to account for the periodic variation of the mesh stiffness in the dwell and the active periods respectively. Dynamic responses of a globoidal cam system in the active and the dwell...

.... It is shown that in a multibody mechanical system, the journal bearing lubricant introduces damping and stiffness to the system. The earlier studies predict that the order of magnitude of the reaction moment is twice that of a perfect revolute joint. The proposed model predicts that the reaction moment...

...E. H. K. Fung; J. Q. Zou; H. W. J. Lee In this paper, Lagrangian formulation of a horizontal rotating beam with active constrained layer damping (ACLD) treatment is presented. The problem is approached by the Rayleigh-Ritz method. By assuming modal functions as the displacement shape functions...

...., and Olhoff, N., 1983, Optimization Methods in Structural Design , B.I.-Wissenschaftsverlag, Mannheim, Germany. Nashif, A. D., Jones, D. I. G., and Henderson, J. P., 1985, Vibration Damping , John Wiley & Sons, New York. Sun, C. T., and Lu, Y. P., 1995, Vibration Damping of Structural Elements...

... ,” ASME J. Eng. Gas Turbines Power , 121 , pp. 494 – 503 . Lund , J. W. , 1974 , “ Stability and Damped Critical Speeds of Flexible Rotor in Fluid-Film Bearings ,” ASME J. Eng. Ind. , 96 , No. 2 , pp. 509 – 517 . Hibner , D. H. , 1975 , “ Dynamic Response of Viscous-Damped Multi...