نتایج جستجو برای: mode shape

تعداد نتایج: 407865  

2001
D. Fotsch

The Modal Assurance Criterion (MAC) has been used as a measure of correlation between measured and predicted mode shapes for many years. However, since the MAC only considers the mode shape correlation, both an auto-MAC plot (to assess the degree of spatial aliasing) and a natural frequency comparison plot are usually required in order to determine the overall correlation/correspondence of the ...

Journal: :The Journal of chemical physics 2012
Kaori Watanabe Hajime Okajima Takuya Kato Hiro-o Hamaguchi

Rotational dynamics of solvated carbon dioxide (CO(2)) has been studied. The infrared absorption band of the antisymmetric stretch mode in acetonitrile is found to show a non-Lorentzian band shape, suggesting a non-exponential decay of the vibrational and/or rotational correlation functions. A combined method of a molecular dynamics (MD) simulation and a quantum chemical calculation well reprod...

Journal: :Hypertension 1987
N Reichek

Two-dimensional echocardiography is superior to M-mode echocardiography for estimation of left ventricular mass when left ventricular shape is markedly abnormal. Left ventricular mass measurement by two-dimensional echocardiography depends on careful experimental calibration of the echocardiographic instrument using either a standard phantom or actual heart slices, and appropriate geometric alg...

2009
S. M. Kang

The synthesis of wurtzite gallium nitride (GaN) nanorods with triangular shape on c-Al2O3 substrates using a thermal chemical vapor deposition process was investigated. It was possible to control nanorod shape and growth mode of GaN nanorods by change of sample geometry in the chamber using a mixture of GaN powder and Ga metal with ammonia gas reaction. It was found that the GaN nanorods were g...

1997
R. Krüger S. Rinderknecht

Results are presented from a numerical investigation of the effect of the shape of the delamination front on energy release rate distribution in a laminated carbon fibre reinforced epoxy end-notched flexure test specimen. The deformation behaviour of the specimen has been computed by threedimensional nonlinear finite element analyses using a recently developed layered 3D-shell element. The dist...

2016
R. Thomas K. O. Roberts E. Tiesinga A. C. J. Wade P. B. Blakie A. B. Deb N. Kjærgaard

The wavefunction for indistinguishable fermions is anti-symmetric under particle exchange, which directly leads to the Pauli exclusion principle, and hence underlies the structure of atoms and the properties of almost all materials. In the dynamics of collisions between two indistinguishable fermions, this requirement strictly prohibits scattering into 90° angles. Here we experimentally investi...

Journal: :Physical review letters 2007
H Farhat H Son Ge G Samsonidze S Reich M S Dresselhaus J Kong

We have studied the line shape and frequency of the G band Raman modes in individual metallic single walled carbon nanotubes (M-SWNTs) as a function of Fermi level (epsilonF) position, by tuning a polymer electrolyte gate. Our study focuses on the data from M-SWNTs where explicit assignment of the G- and G+ peaks can be made. The frequency and line shape of the G- peak in the Raman spectrum of ...

B. L. V. S. Gupta S. Gopalakrishnan S. Narendar T. J. Prasanna Kumar,

This paper presents the thermal vibration analysis of double-layer graphene sheet embedded in polymer elastic medium, using the plate theory and nonlocal continuum mechanics for small scale effects. The graphene is modeled based on continuum plate theory and the axial stress caused by the thermal effects is also considered. Nonlocal governing equations of motion for this double-layer graphene s...

This paper presents an analytical modeling method of optimal control variables to maximize output power for switched reluctance generators (SRGs) in single pulse mode operation. This method extends the basic theory of the Stiebler model and utilizes the flux linkage function to express the inductance model of SRG. In this paper, the optimal phase current shape of SRG for maximum output power is...

Background & aim: Pelvic shape has important effects on obstetrical outcomes. Therefore, this study aimed to determine the etiologic factors that contribute to the formation of female pelvis and describe its variability. Methods: This study was conducted on 131 women referring to Saint Joseph Hospital, Marseille...

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