نتایج جستجو برای: vibration mechanical

تعداد نتایج: 281780  

2017
Eri Sugimoto Hitoshi Sasaki

Results: The peak vibration frequency was about 150 Hz irrespective of vibration intensity, which would effectively activate fast adapting type II (FAII) cutaneous mechanical receptors. The two-point discrimination threshold measured at the third pad of the index finger decreased significantly when a near-threshold vibrotactile stimulus was applied to the dorsal hand, a response termed stochast...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1978
G Eklund K E Hagbarth E Torebjörk

A tonic finger flexion reflex, induced by mechanical vibration (100 Hz) of the fingers, was studied in 20 healthy subjects. The outcome of nerve blocking experiments indicated that the reflex is mainly exteroceptive, distinct from the tonic vibration reflex of muscle spindle origin. Mechanoreceptors with fast conducting nerve fibres in the distal phalanx seem to constitute the major afferent so...

Journal: :Applied Mathematics and Computation 2011
Chun-Ni Wang Jun Ma Wuyin Jin Ying Wu

Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China b School of Physics and Mechanical & Electrical Engineering, Shao Guan University, Shaoguan 512005, China College of Mechano-Electronic Engineering, Lanzhou University of Technology, Lanzhou 730050, China d State Key Laboratory for Strength and Vibration of Mechanical Structures; School of Aerospace, Xian Jiaotong Un...

2001
D. J. Wang C. K. Kuan J. R. Chen

It had been observed that the mechanical stability of some magnets had influences on the closed orbit in the storage ring. In this paper, a mechanical shaker in low vibration level was applied on the quadrupole magnet. The perturbation of the closed orbit was measured. The thermal induced distortion of magnet supporting structure was discussed. The motions of BPM and quadrupole magnet were meas...

2012
Pierre Tihon Nicolas Linze Olivier Verlinden Patrice Mégret Marc Wuilpart

This paper presents the design of a mechanical transducer for a new kind of optical-fiber accelerometer based on birefringence variation. Vibration-induced fiber deformation modifies the birefringence within the fiber and hence the state of polarization of the light. To deform the fiber a mechanical transducer has to be made. This article compares analytically different transducers using either...

1997
Gregory S. Agnes Ali H. Nayfeh Scott Hendricks Raymond Plaut Ronald D. Kriz

Linear vibration absorbers are a valuable tool used to suppress vibrations due to harmonic excitation in structural systems. Limited evaluation of the performance of nonlinear vibration absorbers for nonlinear structures exists in the current literature. The state of the art is extended in this work to vibration absorbers in their three major physical implementations: the mechanical vibration a...

A Ghorbanpour Arani, A Hafizi Bidgoli A Karamali Ravandi M.A Roudbari M.B Azizkhani

In this study, a semi analytical method for transverse and axial vibration of single-walled boron nitride nanotube (SWBNNT) under moving a nanoparticle is presented. The surrounding elastic medium as Pasternak foundation and surface stress effect are included in the formulations of the proposed model. Using Timoshenko beam theory (TBT), Hamilton’s principle and nonlocal piezoelasticity theory, ...

Journal: :international journal of advanced design and manufacturing technology 0
morteza raminnia corresponding author

in this study, thermo-mechanical nonlinear vibration of a polyethylene (pe) cylindrical shell embedded in an elastic foundation was investigated. the shell is reinforced by armchair carbon nanotubes (cnts) where characteristics of the equivalent composite being determined using mori-tanaka model. the elastic medium is simulated using the spring constant of the winkler-type,  . employing nonline...

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