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Vibrational–vibrational coupling in air at low humidities
The Journal of the Acoustical Society of America, 1988Calculations of sound absorption in air are traditionally based on the assumption that molecular relaxations in nitrogen and oxygen are independent. In binary mixtures of these two gases, however, they are not independent; rather, molecular relaxation is known to be controlled by a very strong vibrational–vibrational (V–V) coupling, which influences ...
Allan J. Zuckerwar, Keith W. Miller
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1991
In Chapter 1, we considered the free vibrations of a two-mass system with three springs of equal stiffness; we found that there were two normal modes of vibration. Such a system could have been viewed as consisting of two separate mass/spring vibrators coupled together by the center spring (see Fig. 1.20).
Thomas D. Rossing, Neville H. Fletcher
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In Chapter 1, we considered the free vibrations of a two-mass system with three springs of equal stiffness; we found that there were two normal modes of vibration. Such a system could have been viewed as consisting of two separate mass/spring vibrators coupled together by the center spring (see Fig. 1.20).
Thomas D. Rossing, Neville H. Fletcher
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Vibrational Coupling Infrared Nanocrystallography
Nano LettersCoupling between molecular vibrations leads to collective vibrational states with spectral features sensitive to local molecular order. This provides spectroscopic access to the low-frequency intermolecular energy landscape. In its nanospectroscopic implementation, this technique of vibrational coupling nanocrystallography (VCNC) offers information on ...
Richard L. Puro +4 more
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Journal of Sound and Vibration, 1975
The dynamic response of a simple two degree-of-freedom mechanical analogue is investigated to illustrate the nature of mode interaction that exists for systems in which the stiffness against vibration in one mode is sensitive to the amplitude of the vibration response in the second possible mode.
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The dynamic response of a simple two degree-of-freedom mechanical analogue is investigated to illustrate the nature of mode interaction that exists for systems in which the stiffness against vibration in one mode is sensitive to the amplitude of the vibration response in the second possible mode.
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The Journal of the Acoustical Society of America, 1986
A vibration isolating coupling ideally suited for coupling the bobbin (31) of a linear actuator (23) to a flexure supported printer carriage (11) is disclosed. The two main sources of vibration in a system that includes a flexure (13, 15) supported carriage coupled to a linear actuator (23) are low-frequency vibration resulting from the pivot arc ...
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A vibration isolating coupling ideally suited for coupling the bobbin (31) of a linear actuator (23) to a flexure supported printer carriage (11) is disclosed. The two main sources of vibration in a system that includes a flexure (13, 15) supported carriage coupled to a linear actuator (23) are low-frequency vibration resulting from the pivot arc ...
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Measurements of vibration-vibration coupling in gas mixtures
Symposium (International) on Combustion, 1967A series of experiments were performed on NO−CO, NO−N2 and CO2−N2 mixtures to measure the rate of vibration-vibration (V-V) energy exchange. The experiments were carried out behind incident shocks in shock tubes and cover the approximate temperature range from 800° to 3250°K.
R.L. Taylor, M. Camac, R.M. Feinberg
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Liquid-Phase Vibrational Strong Coupling
The Journal of Physical Chemistry Letters, 2015Light-matter strong coupling involving ground-state molecular vibrations is investigated for the first time in the liquid phase for a set of molecules placed in microcavities. By tuning the cavities, one or more vibrational modes can be coupled in parallel or in series, inducing a change in the vibrational frequencies of the bonds.
Jino, George +4 more
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The Journal of the Acoustical Society of America, 1986
A torsional vibration isolator coupling displaying particular utility in automotive vehicles powered by internal combustion engines of the diesel or otto type. An input torque shaft having undesirable torsional vibrations, such as a torque directly derived from an internal combustion engine, is coupled to an input torque disc.
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A torsional vibration isolator coupling displaying particular utility in automotive vehicles powered by internal combustion engines of the diesel or otto type. An input torque shaft having undesirable torsional vibrations, such as a torque directly derived from an internal combustion engine, is coupled to an input torque disc.
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Vibrational antiresonance in nonlinear coupled systems
Physical Review E, 2019We examine the response of a system of coupled nonlinear oscillators driven by a rapidly varying field, to a low frequency weak periodic excitation of one of the oscillators. The response amplitude of the weak field-driven oscillator at an optimal strength of the rapidly varying field exhibits a strong suppression accompanied by a large negative shift ...
Prasun, Sarkar, Deb Shankar, Ray
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Transducer with coupled vibrators
The Journal of the Acoustical Society of America, 2007A transducer includes a Langevin type vibrator, a bending vibrator, and a ring-like member. The Langevin type vibrator has a construction in which a front mass, a cylindrical vibrator, and a rear mass are provided in tandem, and those elements are tightened by a bolt. The bending vibrator is provided apart from the front mass.
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