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Harmonic Vibrations

Dynamic responsive characteristics of nailed plywood–timber joints under harmonic vibrations

Dynamic responsive characteristics of nailed plywood–timber joints under harmonic vibrations

... Abstract Dynamic tests of nailed plywood–timber joints are conducted under harmonic vibrations from 2 to 7 Hz. The principal results are as follows: under dynamic load- ing, nailed plywood–timber joints may ...

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Dynamic response of wall-floor joints of wooden light-frame constructions under forced harmonic vibrations

Dynamic response of wall-floor joints of wooden light-frame constructions under forced harmonic vibrations

... under harmonic vibrations Responsive accelerations on the floor-sheathing panels were regarded as input accelerations at the wall-floor joints because they were almost equal to the acceleration mea- sured ...

7

The tuned mass-damper-inerter for harmonic vibrations suppression, attached mass reduction, and energy harvesting

The tuned mass-damper-inerter for harmonic vibrations suppression, attached mass reduction, and energy harvesting

... To this end, it is argued that, perhaps, the simplest and most straightforward way to enhance the performance and robustness to detuning of the classical single TMD is to increase the attached mass for which “optimum” ...

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Control of convection patterning and intensity in shallow cavities by harmonic vibrations

Control of convection patterning and intensity in shallow cavities by harmonic vibrations

... (with vibrations in the vertical direction), three rolls of different nature are simultaneously present in the cavity: the aforementioned relatively strong Marangoni roll located in proximity to the cold wall, a ...

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A group theoretic approach to generalized harmonic vibrations in a one dimensional lattice

A group theoretic approach to generalized harmonic vibrations in a one dimensional lattice

... In this paper, we suppose that N identical, point masses are symmetrically and uniformly arranged around a fixed circle so that the masses are coupled with massless, ideal springs... All[r] ...

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An application of the transfer matrix approach for a dynamic analysis of complex spatial pipelines

An application of the transfer matrix approach for a dynamic analysis of complex spatial pipelines

... The original variant of transfer matrix approach (TMA) for dynamic calculations with high accuracy and relatively simple implementation is presented. In accordance with it a piping is modeled as a system of beams with ...

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Modelling ground vibrations induced by harmonic loads

Modelling ground vibrations induced by harmonic loads

... A finite-element model combining the frequency domain thin-layer method with paraxial boundary conditions to simulate the semi-infinite extent of a soil medium is presented in this paper. The combined numerical model is ...

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Laser selective excitation of praseodymium ions in hydrogenated fluorite crystals

Laser selective excitation of praseodymium ions in hydrogenated fluorite crystals

... site in SrF :Pr 3 +:D- showing local mode vibronic lines 2 associated with second harmonic vibrations coupled to the D crystal field level.. Laser excitation of a praseodymium doped SrF [r] ...

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The Relative Transversal Vibrations of Printing-Press Cylinders that are Pressed Against Each Other via an Elastic Blanket

The Relative Transversal Vibrations of Printing-Press Cylinders that are Pressed Against Each Other via an Elastic Blanket

... These vibrations caused changes in the pressure between the cylinders, thus reducing the quality of the ...relative vibrations of the cylinders, it was decided to reduce the intensity of the ...

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Mechanisms underlying the production of carapace vibrations and associated waterborne sounds in the American lobster, Homarus americanus

Mechanisms underlying the production of carapace vibrations and associated waterborne sounds in the American lobster, Homarus americanus

... body vibrations in 25 (of 100) lobsters, and Mendelson (1969) successfully recorded remotor muscle activity in lobsters while they produced body vibrations; however, he did not rigorously determine whether ...

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CFD modelling of the cross flow through normal triangular tube arrays with one tube undergoing forced vibrations or fluidelastic instability

CFD modelling of the cross flow through normal triangular tube arrays with one tube undergoing forced vibrations or fluidelastic instability

... to vibrations in the transverse direction, it is key to estimate accurately the lift forces and they are mostly influenced by the pressure unbalance at the regions around Θ = 90 ◦ and Θ = 270 ◦ ...

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International Journal of Emerging Technology and Advanced Engineering Website: www.ijetae.com ( ISSN 2250-2459, ISO 9001:2008 Certified Journal,(Volume 4, Issue 12, December 2014)

International Journal of Emerging Technology and Advanced Engineering Website: www.ijetae.com ( ISSN 2250-2459, ISO 9001:2008 Certified Journal,(Volume 4, Issue 12, December 2014)

... character stretching vibrations in the infrared spectrum. The frequencies could not be precisely determined from the experimental spectra in this range due to their low intensities and overlap of the bands 4) The ...

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Maladie des vibrations

Maladie des vibrations

... des vibrations et chez lesquels les vibrations mains-bras seraient un facteur causal indé- pendant 24,25 , doit être envisagé chez les patients qui ...

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Finite Element Analysis of Roll Cage

Finite Element Analysis of Roll Cage

... of vibrations are obtained (table 4) and from the fundamentals of vibrations it is clear that any force corresponding to those natural frequencies should not act on the roll cage and the roll cage should ...

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Frequency information in the vibration cued escape hatching of red eyed treefrogs

Frequency information in the vibration cued escape hatching of red eyed treefrogs

... We used miniature accelerometers [Endevco 25B (0.2 g), San Juan Capistrano, CA, USA; AP Technology AP19 (0.14 g), Oosterhout, The Netherlands] to record vibrations in 4- and 5-day-old hatching- competent clutches. ...

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The Harmonic Resonance In A Distribution Power System Using An Active Filter With Fuzzy Based Resonant Current Control

The Harmonic Resonance In A Distribution Power System Using An Active Filter With Fuzzy Based Resonant Current Control

... Harmonic voltage on the special frequency is determined based at the so-called synchronous reference frame (SRF) ...specific harmonic voltage issue becomes a dc price after Eabc is converted into the SRF ...

9

An Analysis of Turbocharger Impeller Vibrations

An Analysis of Turbocharger Impeller Vibrations

... Natural vibrations of higher orders of the blade-disc system have greater damping, by an order of magnitude higher than the natural vibrations in the first free form, there- fore at resonance frequency the ...

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Consistent assignment of the vibrations of symmetric and asymmetric ortho disubstituted benzenes

Consistent assignment of the vibrations of symmetric and asymmetric ortho disubstituted benzenes

... the vibrations of benzene significantly, so too does the second substitution on moving from fluorobenzene to ...that vibrations given the same Wilson/Varsányi label in different molecules have the same ...

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Mechanochromic Photonic Crystals as Strain Sensors for structural Applications

Mechanochromic Photonic Crystals as Strain Sensors for structural Applications

...  monitoring through ambient vibrations, which involve ambient vibrations caused by live or wind loads to examine the dynamic response from structure. Any changes in the vibratio[r] ...

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Vibration Analysis of an Infinite Poroelastic Circular Cylindrical Shell Immersed in Fluid

Vibration Analysis of an Infinite Poroelastic Circular Cylindrical Shell Immersed in Fluid

... Figure 3. Phase velocity as a function of wavelength (Mat-I, Mat-II, Solid cylinder) axially symmetric vibrations of po- roelastic solid cylinders immersed in an acoustic medium. for material-I while beyond  = ...

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