.... A detailed parametric analysis is also performed to investigate the effects of various cable parameters and wrapping patterns on the dynamics of the host structure. Email: pranav.agrawal@uwaterloo.ca Email: salehian@uwaterloo.ca Contributed by the Technical Committee on Vibration and Sound...

... excite vibrations. The ILI tool’s weight and speed can exert substantial forces, stresses, and deflections on the pipe section. When the excitation frequency from the ILI tool’s movement is close to the pipe’s natural frequency, the dynamic stress generated within the pipe can become great enough...

... Testlab version 14.0 is used as a computer software to control the data acquisition settings and analyze the output vibration data. Fig. 2 Experimental setup for the shaker testing setup of the structure-1 Experimental setup for the shaker testing setup of the structure-1 The fabrication...

...Umar Farooq; Brian F. Feeny This work presents the experimental evaluation of the state-variable modal decomposition method for a modal parameter estimation of multidegree-of-freedom and continuous vibration systems. Using output response ensembles only, the generalized eigenvalue problem is formed...

...C. C. Hong The thermal vibration study of magnetostrictive functionally graded material (FGM) plate under rapid heating is computed by using the generalized differential quadrature (GDQ) method. The dynamic equilibrium differential equations with displacements and shear rotations...

...M. O. T. Cole; C. Chamroon; P. Ngamprapasom Synchronous vibration in rotor systems having bearings, seals, or other elements with nonlinear stiffness characteristics is prone to amplitude jump when operating close to critical speeds as there may be two or more possible whirl motions for a given...

...Satyajit Panda; M. C. Ray This paper deals with a study on the active constrained layer damping (ACLD) of geometrically nonlinear vibrations of functionally graded (FG) laminated composite plates. The constraining layer of the ACLD treatment is considered to be made of the vertically/obliquely...

...Qingbo He; Ruxu Du; Fanrang Kong This paper proposes a new feature extraction method based on Independent Component Analysis (ICA) and reconstructed phase space. The ICA-based phase space feature unifies the system dynamics embedded in vibration signal and higher-order statistics expressed in phase...

...C. Mei This paper concerns in-plane vibration analysis of coupled bending and longitudinal vibrations in L-shaped and portal planar frame structures. An exact analytical solution is obtained using wave vibration approach. The classical Euler-Bernoulli as well as the advanced Timoshenko bending...

... of acoustic transmission. Various physical phenomena are considered, namely, the wave propagation in a porous medium, the vibrations of elastic plate and the piezoelectric behavior of actuators, the acoustics-structure interaction and the wave propagation in a fluid. The modeling of porous core requires...

... of the fluid is used to gauge the effect of design parameters on the isolation characteristics of the mount. Experimental results show that in the proposed design, the dynamic stiffness of the mount may be varied over a wide range of frequencies making the mount a unique and versatile vibration isolation...

...Mariano Febbo The present study is devoted to the determination of the optimal parameters and characteristics of a three degree of freedom dynamic vibration absorber (3 DOF DVA) for the vibration reduction of a plate at a given point. The optimization scheme uses simulated annealing and constrained...

...Tsuyoshi Inoue; Yukiko Ishida; Hideaki Niimi The ball balancer has been used as a vibration suppression device in rotor systems. It has a superior characteristic that the vibration amplitude is reduced to zero theoretically at a rotational speed range higher than the critical speed. However...

..., the sensitivity of the period-doubling islands to the radial immersion, as along with the orientation of the islands with respect to the Hopf lobes. 16 07 2010 14 07 2011 18 01 2012 18 01 2012 Chebyshev approximation island structure milling state-space methods vibrations...

...Yukio Ishida; Tomonori Matsuura; Xiao Long Zhang An automatic ball balancer is a unique vibration suppression device for rotor systems. Theoretically, two balls in a cylindrical chamber of the rotor are located at the optimal positions on the opposite side to the unbalance and cancel the unbalance...

...Shinsuke Takeuchi; Kanjuro Makihara; Junjiro Onoda A reliable and evolvable vibration suppression technique using a digital processor powered by energy harvested from a piezoelectric element was developed and investigated. This technique, called a self-powered digital vibration control, benefits...

.... , 2008 , “ Structural Parameters Identification Using Improved Normal Frequency Response Function Method ,” Mech. Syst. Signal Process. , 22 , pp. 1858 – 1868 . 10.1016/j.ymssp.2008.02.001 5 Lancaster , P. , 1961 , “ Expressions for Damping Matrices in Linear Vibration Problems ,” J...

... sample of response data generated by Monte Carlo simulation or measurement. Here the discrete singular convolution (DSC) method – a transfrequency computation approach for deterministic vibration - is used to generate Monte Carlo samples. The accuracy of the DSC method is first verified (i) in terms...

...Amir Lotfi-Gaskarimahalle; Lloyd H. Scarborough; Christopher D. Rahn; Edward C. Smith This paper investigates passive and semi-active vibration control using fluidic flexible matrix composites ( F 2 MC ) . F 2 MC tubes filled with fluid and connected to an accumulator through a fixed orifice can...

... on a structure to reach its maximum at different instants within a vibration cycle. Experience has shown that even if a structure is proportionally damped, the complex mode description often fits a set of measurements more accurately than a real mode description because instrumentation may induce small phase...