Stochastic normal mode frequency analysis of hybrid angle ply laminated composite skew plate with opening using a novel approach

2020 ◽  
pp. 1-35
Author(s):  
Bharat Bhushan Mishra ◽  
Ajay Kumar ◽  
Umut Topal
Keyword(s):  
Normal Mode ◽  
Frequency Analysis ◽  
Laminated Composite ◽  
Mode Frequency ◽  
Normal Mode Frequency ◽  
Novel Approach ◽  
Skew Plate

scholarly journals Sensitivity Kernels for Inferring Lorentz Stresses from Normal-mode Frequency Splittings in the Sun

2020 ◽  
Vol 897 (1) ◽  
pp. 38 ◽  
Author(s):  
Srijan Bharati Das ◽  
Tuneer Chakraborty ◽  
Shravan M. Hanasoge ◽  
Jeroen Tromp
Keyword(s):  
Normal Mode ◽  
Mode Frequency ◽  
The Sun ◽  
Normal Mode Frequency

scholarly journals Mode frequency analysis of antisymmetric angle-ply laminated composite stiffened hypar shell with cutout

2019 ◽  
Vol 23 (1) ◽  
pp. 162-171
Author(s):  
Puja Basu Chaudhuri ◽  
Anirban Mitra ◽  
Sarmila Sahoo
Keyword(s):  
Free Vibration ◽  
Natural Frequency ◽  
Frequency Analysis ◽  
Fiber Orientation ◽  
Orientation Angle ◽  
Shear Deformation Theory ◽  
Laminated Composite ◽  
Mode Frequency ◽  
Thickness Ratio ◽  
Fiber Orientation Angle

Abstract This article deals with finite element method for the analysis of antisymmetric angle-ply laminated composite hypar shells (hyperbolic paraboloid bounded by straight edges) that applies an eight-noded isoparametric shell element and a three-noded beam element to study the mode-frequency analysis of stiffened shell with cutout. Two-, 4-, and 10-layered antisymmetric angle-ply laminations with different lamination angles are considered. Among these, 10-layer antisymmetric angle-ply shells are considered for elaborate study. The shells have different boundary conditions along its four edges. The formulation is based on the first-order shear deformation theory. The reduced method of eigen value solution is chosen for the undamped free vibration analysis. The first five modes of natural frequency are presented. The numerical studies are conducted to determine the effects of width-to-thickness ratio (b/h), degree of orthotropy (E11/E22), and fiber orientation angle (θ) on the nondimensional natural frequency. The results reveal that free vibration behavior mainly depends on the number of boundary constraints rather than other parametric variations such as change in fiber orientation angle and increase in degree of orthotropy and width-to-thickness ratio.

Normal-mode frequency prediction for XO 4 n? ions

1976 ◽  
Vol 25 (3) ◽  
pp. 1192-1193
Author(s):  
M. S. Savogina ◽  
A. M. Aleksandrovskaya ◽  
M. V. Shchigal ◽  
M. V. Nikonov ◽  
V. V. Nikitenko
Keyword(s):  
Normal Mode ◽  
Mode Frequency ◽  
Normal Mode Frequency

Tilt Observations in the Normal Mode Frequency Band at the Geodynamic Observatory Cueva de los Verdes, Lanzarote

2004 ◽  
Vol 161 (7) ◽  
pp. 1597-1611 ◽  
Author(s):  
A. V. Kalinina ◽  
V. A. Volkov ◽  
A. V. Gorbatikov ◽  
J. Arnoso ◽  
R. Vieira ◽  
...  
Keyword(s):  
Normal Mode ◽  
Frequency Band ◽  
Mode Frequency ◽  
Normal Mode Frequency

On the normal-mode frequency spectrum of kinetic magnetohydrodynamics

2015 ◽  
Vol 81 (3) ◽  
Author(s):  
J. J. Ramos
Keyword(s):  
Quadratic Form ◽  
Frequency Spectrum ◽  
Normal Mode ◽  
Mode Frequency ◽  
Static Equilibrium ◽  
Normal Mode Frequency ◽  
Conducting Wall ◽  
Vacuum Interface ◽  
Particle Orbits ◽  
Explicit Proof

This paper presents an explicit proof that, in the kinetic magnetohydrodynamics framework, the squared frequencies of normal-mode perturbations about a static equilibrium are real. This proof is based on a quadratic form for the square-integrable normal-mode eigenfunctions and does not rely on demonstrating operator self-adjointness. The analysis is consistent with the quasineutrality condition without involving any subsidiary constraint to enforce it, and does not require the assumption that all particle orbits be periodic. It applies to Maxwellian equilibria, spatially bounded by either a rigid conducting wall or by a plasma-vacuum interface where the density goes continuously to zero.

scholarly journals An approach to detect afterslips in giant earthquakes in the normal-mode frequency band

2012 ◽  
Vol 190 (2) ◽  
pp. 1097-1110 ◽  
Author(s):  
Toshiro Tanimoto ◽  
Chen Ji ◽  
Mitsutsugu Igarashi
Keyword(s):  
Normal Mode ◽  
Frequency Band ◽  
Mode Frequency ◽  
Normal Mode Frequency
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