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Friday, August 7, 2020 | History

1 edition of Subharmonic resonance found in the catalog.

Subharmonic resonance

by John Edward Mulhern

  • 381 Want to read
  • 28 Currently reading

Published .
Written in English


Edition Notes

Thesis (M.A.)--Boston University, 1949.

The Physical Object
Paginationiv, 49 pages
Number of Pages49
ID Numbers
Open LibraryOL25917612M
OCLC/WorldCa7904970

polarized (CP) light directed normal to the orbit, very pronounced subharmonic resonance behav-ior is shown to occur with a variety of interesting properties. In particular, only if the amplitude of the CP light exceeds a critical value, will the resonance continue without radius and energy decay. For decades, the patented dbx Subharmonic Synthesis has been the secret weapon used by mobile DJ's and film and sound professionals to produce an impact unavailable from any other device. Subharmonic Synthesis brings out and extends bass frequencies, producing tremor-like lows you can feel as well as hear. It always gets a huge reaction from.

Theoretical results predict generation of the subharmonics. They can appear if the input frequency close to twice the natural frequency. Conditions for the subharmonic resonance can also be found theoretically with respect to the input frequency and the input by: 1. In this paper, the subharmonic resonance of Duffing oscillator with fractional-order derivative is investigated using the averaging method. First, the approximately analytical solution and the amplitude–frequency equation are by: 4.

1/3 Subharmonic resonance of current-carrying conductor subjected to harmonic excitation system is studied. The nonlinear equation of the system is established by means of dynamics theory. According to the method of multiple scales for nonlinear vibrations the approximation solution of 1/3 Subharmonic resonance of the system is obtained.   The fundamental and subharmonic resonances of a two degree-of-freedom oscillator with cubic stiffness nonlinearities and linear viscous damping are examined using a multiple-seales averaging analysis. The system is in a ‘1−1’ internal resonance, i.e., it has two equal linearized eigenfrequencies, and it possesses ‘nonlinear normal modes.’Cited by:


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Subharmonic resonance by John Edward Mulhern Download PDF EPUB FB2

Subharmonic frequencies are frequencies below the fundamental frequency of an oscillator in a ratio of 1/ n, with n a positive example, if the fundamental frequency of an oscillator is Hz, sub-harmonics include Hz (1 ⁄ 2), ~ Hz (1 ⁄ 3) and Hz (1 ⁄ 4).Thus, they are a mirror image of the harmonic series, the undertone series.

This is because the resonance is Subharmonic resonance book subharmonic resonance and a superharmonic resonance at first and these resonant behaviors are mainly induced by the vibrational high-frequency perturbation then. In previous references, the subharmonic resonance and the superharmonic resonance are usually induced by only one by: The subharmonic resonance of van der Pol (VDP) oscillator with fractional-order derivative is studied by the averaging method.

At first, the first-order approximate solutions are obtained by the averaging method. Then the definitions of equivalent linear damping coefficient (ELDC) and equivalent linear stiffness coefficient (ELSC) for subharmonic resonance are established, and the effects of Cited by: Subharmonic Resonance in a Mixing Layer By N.

Mansour l, F. Hussain *, and J. Buelll The subharmonic resonance phenomenon in a spatially-evolving mixing layer is studied using direct simulations of the two-dimensional Navier-Stokes equations.

The computational domain extends to foo in the cross-stream direction with U1 =File Size: KB. Subharmonic resonances of the parametrically driven pendulum 4 driving frequency and amplitude, the mean torque of the force of inertia depends only on the angle of the pendulum’s deflection from the direction of the pivot’s vibration.

In the absence of gravity the inertial torque gives a. Subharmonic From Wikipedia, the free encyclopedia In music and dynamics, subharmonic or undertone frequencies are frequencies below the main frequency of a signal.

The 1/3 subharmonic resonance of the shell is analyzed by using the method of multiple scales and the sufficient and necessary conditions for the stability of the steady-states of the 1/3. Ferroresonance and subsynchronous resonance can Subharmonic resonance book in power system circuits when capacitance is connected in series (and less commonly when connected in parallel) with non-linear inductive circuits such as transformers and reactors and when the voltage is sufficient to drive the non-linear inductance to near the knee point of the B-H curve.

As the inductance falls at the knee point a stage. The paper proposes a stabilization method for 1/3-Order subharmonic resonance with an autoparametric vibration absorber. A main system with nonlinear spring stiffness and harmonic excitation, i.e., subjected to a sinusoidally changed magnetic force, is introduced as a model which produces 1/3-Order subharmonic by: Fundamental and Harmonics.

The lowest resonant frequency of a vibrating object is called its fundamental frequency. Most vibrating objects have more than one resonant frequency and those used in musical instruments typically vibrate at harmonics of the fundamental.

A harmonic is defined as an integer (whole number) multiple of the fundamental. T1 - Fundamental and subharmonic resonances in a nonlinear oscillator with bifurcating modes. AU - Vakakis, Alexander F.

PY - Y1 - N2 - The fundamental and subharmonic resonances of a discrete oscillator with cubic stiffness nonlinearities and linear viscous damping are examined using a multiple-scales averaging : Alexander F Vakakis.

The scientific principle of "resonance' which also happens to be the title of the book, is at the heart of the story as it has the potential to wreak havoc. It almost does but for the last moment realization by a character whose presence is felt through the book The author makes use of real events to build a credible fictional story /5.

Experimental investigation of subharmonic resonance in an axisymmetric jet - Volume - C. Paschereit, I. Wygnanski, H. FiedlerCited by: But the solution shows that a subharmonic mode locking occurs and specifies how the periods of resonance are deduced by recurrence from one oscillator to another.

Subharmonic modes of coupled Rossby waves are found by solving the equation of the Caldirola–Kanai (CK) oscillator, which is a fundamental model of dissipative systems applied to Author: Jean-Louis Pinault.

The pairing process, i.e. the growth of the subharmonic, is a consequence of what has come to be known as subharmonic resonance --the nonlinear interaction between a wave of frequency f and a subharmonic wave of frequency f/2, producing an f/2 component which is capable of reinforcing the subharmonic.

Such reinforcement depends on excitation Cited by:   Periodically forced, nonlinear oscillators often show a strong response when driven near a rational multiple of the natural frequency of the linearized system: Such occurrences are known as subharmonic, ultraharmonic, and ultrasubharmonic resonances.

In these systems, at these resonances, nonlinearities conspire to shift the response from the driving frequency to (near) the natural frequency Cited by: 8. In Resonance by Jasmuheen This book is a manual for personal self empowerment and self mastery.

It is filled with inspirational information of experiental reseach and channelled guidance from Jasmuheen and the Ascended Ones.

The predominant focus of Jasmuheen's work is on bridging the worlds of science and religion, the realms of the physical 4/5(15). Subharmonic resonance of geometrical nonlinear structure in 2-D periodic elastic system for mechanical wave filtering. In Chang F-K, Kopsaftopoulos F, editors, Structural Health Monitoring System Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM Author: Cheng Li, Zeliang Liu, Ming Li, Hungguang Li, Ying Li, Wing Kam Liu.

Subsynchronous, Subharmonic and the Difference between Them I've had a few discussions over the years about this point and it seems that different people consider them differently. What is subsynchronous and subharmonic in your book. Assume you have a running induction motor at rpm and X is the motor running speed.

(3/2 X) B. ( X) C. (1X) D. (3/4 X). Zaibatsu: a study of Japanese combines yesterday and Today [Subharmonic resonance in a limit cycling voltage Regulator] on *FREE* shipping on qualifying offers.

Zaibatsu: a study of Japanese combines yesterday and Today. However, in a combination with a subharmonic-resonance triad, the dominant modes of the oblique breakdown experience a slower growth, whereas those of the subharmonic resonance are more amplified.

Overall, the interaction promotes transition and the rise in skin friction and the drop in shape factor are moved upstream when compared to the Cited by: [email protected]{osti_, title = {Electric energy systems theory: an introduction}, author = {Elgerd, O.I.}, abstractNote = {This book discusses the automatic closed-loop control of generators, which is the key to the successful operation of modern power plants and power systems.

The first edition of this book gained wide readership because of its control topics and its coverage of optimum.Resonance is a high adrenaline book from start to finish as the free walkers and the consort are on the brink of confrontation.

Del doesnt have an easy choice to make as the book kicks off. When she is faced with the idea of rebellion, there is only one thing that could possibly sway Tensions are high in this action packed sequel to Dissonance/5.