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Keywords: oscillations
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. May 2011, 78(3): 031004.
Published Online: February 7, 2011
...Shuhaimi Mansor; Martin Passmore This paper describes a technique for determining the dynamic aerodynamic yaw moment derivative based on the time response data using an oscillating model rig. The aerodynamic yaw moment derivatives are initially estimated using oscillation frequency and amplitude...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. November 2010, 77(6): 061012.
Published Online: September 1, 2010
... practically observed wobble-mode bursting oscillations that are associated most frequently with down-hill riding. If the vehicle is cornering under constant acceleration, at a fixed roll angle, it is shown that for low values of acceleration (and braking), it follows closely a logarithmic spiral shaped...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. July 2010, 77(4): 041003.
Published Online: March 31, 2010
... are given to verify the accuracy of the derived expressions. 25 02 2009 24 09 2009 31 03 2010 31 03 2010 approximation theory damping eigenvalues and eigenfunctions oscillations reduced order systems state-space methods viscoelasticity Bagley , R. L...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. January 2008, 75(1): 011021.
Published Online: February 6, 2008
...Bryan Eisenhower; Gregory Hagen; Andrzej Banaszuk; Igor Mezić In this paper we investigate oscillations of a dynamical system containing passive dynamics driven by a positive feedback and how spatial characteristics (i.e., symmetry) affect the amplitude and stability of its nominal limit cycling...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. January 2008, 75(1): 011018.
Published Online: January 16, 2008
... of oscillation increases as the region over which the forcing is applied increases. The model is the basis for a more complete coupled catch/cod-end model. In recent decades, there has been increasing international concern about diminishing fish stocks. The depletion of stocks has, in the past, demonstrated...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. January 2008, 75(1): 011011.
Published Online: January 14, 2008
...U. H. Hegazy; M. H. Eissa; Y. A. Amer This paper is concerned with the nonlinear oscillations and dynamic behavior of a rigid disk-rotor supported by active magnetic bearings (AMB), without gyroscopic effects. The nonlinear equations of motion are derived considering a periodically time-varying...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. July 2007, 74(4): 754–769.
Published Online: November 22, 2006
... relatively introduces the expansion of amplitudes and the reduction of frequencies of the riser vibrations. The pulsatile frequencies of the internal flow in wave aspect could reform the oscillation behavior of the conveyor pipe. 02 02 2004 22 11 2006 marine engineering pipes damping...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. March 2007, 74(2): 325–331.
Published Online: February 9, 2006
...O. V. Gendelman; Yu. Starosvetsky Quasi-periodic response of a linear oscillator attached to nonlinear energy sink with relatively small mass under external sinusoidal forcing in a vicinity of main (1:1) resonance is studied analytically and numerically. It is shown that the quasi-periodic response...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. March 2007, 74(2): 315–324.
Published Online: February 6, 2006
...P. D. Spanos; A. Sofi; M. Di Paola The nonstationary random response of a class of lightly damped nonlinear oscillators subjected to Gaussian white noise is considered. An approximate analytical method for determining the response envelope statistics is presented. Within the framework of stochastic...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. July 2005, 72(4): 511–518.
Published Online: April 8, 2005
... doubling cascade with a route to chaos seems to emerge from our considerations. chaos nonlinear dynamical systems vibrations beams (structures) oscillations cracks The damage assessment problem in cracked structures has been extensively studied in the last decade, highlighting...
Journal Articles
Publisher: ASME
Article Type: Brief Notes
J. Appl. Mech. July 2004, 71(4): 579–581.
Published Online: September 7, 2004
... Editor: A. A. Ferri. 04 July 2002 27 January 2004 07 09 2004 bifurcation oscillations vibrations A two-degree-of-freedom impact oscillator is shown in Fig. 1 . The mass M 1 with forced excitation impacts against a rigid wall A when its displacement...
Topics: Bifurcation
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. January 2004, 71(1): 120–130.
Published Online: March 17, 2004
... oscillations of the surrounding fluid. The discretization procedure exploits Green’s theorem and exposes two different gyroscopic effects underpinning the coupled system dynamics: One describes the gyroscopic coupling between the disk and acoustic oscillations, and another arises from the disk rotation...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. September 2003, 70(5): 757–761.
Published Online: October 10, 2003
...Y. Ketema An oscillator where the restoring force is furnished by a viscoelastic bar and therefore depends on the history of the motion is considered. The history-dependent force is characterized by a relaxation modulus and a relaxation time. Assuming that the relaxation time is small...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. May 2002, 69(3): 325–334.
Published Online: May 3, 2002
... techniques oscillations Shallow arches are common structural members widely used either in civil engineering (e.g., bridges) or in mechanical and aerospace engineering as subelements of more complex structures. More recently, they are being investigated also as components of nanostructures. External...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. March 2002, 69(2): 161–170.
Published Online: August 13, 2001
... displacement and energy levels, respectively. These properties are used to describe the response in terms of its probability density function and its spectral density function. An example demonstrates the accuracy in predicting change of frequency and damping of a parametrically excited oscillator, and another...
Journal Articles
Publisher: ASME
Article Type: Brief Notes
J. Appl. Mech. January 2002, 69(1): 83–87.
Published Online: August 8, 2001
... are not constant. Thus, free response is not represented by discrete standing waves but by traveling waves, and a given phase of oscillation travels along the string. String tension and nonzero instantaneous transverse velocity at the moving boundary results in energy variation. When the string undergoes...
Journal Articles
Publisher: ASME
Article Type: Brief Notes
J. Appl. Mech. November 2001, 68(6): 951–952.
Published Online: June 10, 2001
...B. Wu; P. Li This paper deals with nonlinear oscillation of a general single-degree-of-freedom system. By combining the linearization of the governing equation with the method of harmonic balance, we establish two analytical approximate formulas for the period. These two formulas are valid...
Topics: Oscillations
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. November 2001, 68(6): 903–914.
Published Online: February 26, 2001
...N. Sri Namachchivaya; H. J. Van Roessel In a recent paper an asymptotic approximation for the moment Lyapunov exponent, g p , of two coupled oscillators driven by a small intensity real noise was obtained. The utility of that result is limited by the fact that it was obtained under the assumption...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. December 2000, 67(4): 763–771.
Published Online: August 14, 2000
... oscillations damping classical mechanics Markov processes The problem of predicting the dynamic response of flexible structures to random environmental loading occurs in a number of engineering fields. Examples include the wave-induced motion of offshore structures and the vibration of tall...