... Reconsidered: The Wahl-Fischer Torsional Instability Problem ,” ASME J. Appl. Mech. , 87 ( 10 ), p. 101004 . 10.1115/1.4047421 [2] Wahl , A. M. , and Fischer , E. G. , 1942 , “ Investigation of Self-Excited Torsional Oscillations and Vibration Damper for Induction-Motor Drives ,” ASME J...

...Thomas Miras; Jean-Sébastien Schotté; Roger Ohayon It is proposed to investigate in this paper the damped vibrations of an incompressible liquid contained in a deformable tank. A linearized formulation describing the small movements of the system is presented. At first, a diagonal damping...

...M. Eissa; M. Kamel; A. T. El-Sayed An investigation into the passive vibration reduction of the nonlinear spring pendulum system, simulating the ship roll motion is presented. This leads to a four-degree-of-freedom (4-DOF) system subjected to multiparametric excitation forces. The two absorbers...

... are determined, and the strength of instability corresponding to different period numbers is analyzed. Consider the transverse vibration of a uniform string with a constant mass per unit length ρ subjected to a constant tension P , translating at a subcritical speed | v ( t...

...I. Keles; N. Tutuncu Free and forced vibration analyses of functionally graded hollow cylinders and spheres are performed and analytical benchmark solutions are presented. The material is assumed to be graded in the radial direction according to a simple power law. The Laplace transform method...

... vibration characteristics of the cable, as well as the dynamic response of the cable under arbitrarily moving ends. The results for an equilibrium and free vibration characteristics around the equilibrium are experimentally validated on a laboratory steel band. The methodology is applied to elevator...

... − φ + arctan ( ζ eff ⋅ s 3 / 2 1 − ζ eff ⋅ s 3 / 2 − s 2 ) ) = ( F o A ⋅ k s ) ⋅ sin ( ω t ) The amplitude of vibration normalized by the actuation force and the spring stiffness will be 19 ( A ⋅ k s...

... transient response vibrations wavelet transforms response reconstruction substructure unit impulse response function wavelet transform The interest to monitor a structure and to detect damage at an early stage prevails throughout the civil and mechanical engineering communities. Vibration...

...M. A. Agwa; A. Pinto da Costa This paper studies the friction induced vibrations that may develop in the neighborhood of steady sliding states of elastic orthotropic half-spaces compressed against a rigid plane moving tangentially with a prescribed speed. These vibrations may lead to flutter...

... nonlinear dynamical systems vibrations multibody dynamics singular mass matrix general constrained systems multiscale dynamical systems use of more generalized coordinates than minimum The motion of a multibody system is generally highly nonlinear and often complex. Formulating equations...

...Xiao-Dong Yang; Li-Qun Chen; Jean W. Zu The vibrations and stability are investigated for an axially moving rectangular antisymmetric cross-ply composite plate supported on simple supports. The partial differential equations governing the in-plane and out-of-plane displacements are derived...

... methods (such as the Gauss–Seidel method). 29 12 2008 21 06 2010 23 06 2010 26 10 2010 26 10 2010 beams (structures) finite element analysis Gaussian distribution integration iterative methods partial differential equations stability vibrations FEM DQM...

... can be easily determined. By matching boundary conditions, a coupled infinite system of linear algebraic equations is derived as an analytical model for the free vibration of a circular plate with multiple circular holes. The direct-searching approach is utilized in the truncated finite system...

...S. Ziaei-Rad; E. Kouchaki; M. Imregun This paper studies the effects of shaft rub on a rotating system’s vibration response with emphasis on heat generation at the contact point. A 3D heat transfer code, coupled to a 3D vibration code, was developed to predict the dynamic response of a rotor...

...M. A. Rastgaar; M. Ahmadian; S. C. Southward Orthogonal eigenstructure control is a novel control method that can be used for vibration suppression in flexible structures. The method described in this study does not need defining the desired locations of the closed-loop poles or predetermining...

... difference in the launch process and launch structure. This paper is concerned with an analysis of the dynamic characteristics of this high performance weapon system by numerical simulation. Based on its launch mechanism and launch structure, the vibration equation describing the vibration characteristics...

...D. Zhou; Y. K. Cheung; S. H. Lo This paper studies the free vibration of circular toroidal sectors with circular cross-sections based on the three-dimensional small-strain, linear elasticity theory. A set of orthogonal coordinates, composing the polar coordinate ( r , θ ) with the origin...

...Demetris Pentaras; Isaac Elishakoff Problem of matching a desired fundamental natural frequency is solved in the closed form for the polar-orthotropic inhomogeneous circular plate, which is clamped along its circumference. The vibration tailoring is performed by posing a semi-inverse eigenvalue...

...Jen-San Chen; Wei-Chia Ro This paper studies, both theoretically and experimentally, the deformation, the vibration, and the stability of a buckled elastic strip (also known as an elastica) constrained by a space-fixed point in the middle. One end of the elastica is fully clamped while the other...

... nearly pure beams to nearly pure shells. 22 05 2009 08 06 2009 14 12 2009 14 12 2009 beams (structures) elasticity Legendre polynomials perturbation theory shells (structures) vibrations This paper was motivated by the question: Is it possible to image living...