# normal mode

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## normal mode

[′nȯr·məl ‚mōd]
(computer science)
Operation of a computer in which it executes its own instructions rather than those of a different computer.
References in periodicals archive ?
As noted there using the results of performed experimental investigations Braille elements do not have substantial effect to the shape of the eigenmodes. Because of this fact numerical investigations of vibrations of the elastic structure without Braille elements is performed.
In a real-life scenario, the vibration characteristics (eigenvalues and eigenmodes) of the real damaged structure would have to be determined (measured) by experiment.
Indeed, as is seen from Figures 5, 7, and 9, max values of few first purely nonlinear eigenmodes are not too big (in comparison with the linear eigenmode).
Equation (15) gives the general form of the eigenmode of the plate in the x-direction.
The DD's are obtained by solving the eigenmode equation associated to the unit cell geometry considering appropriate periodic boundary conditions in both Cartesian directions.
The resulting eigenmode W(s) is approximately constant, with [n.sup.2] = [R.sup.2.sub.M]/[r.sup.2.sub.m]; as in Rayleigh's analysis.
Accordingly, the condensed structure can be obtained by the n eigenmode of whole structure starting from low order, which is described in the following equation.
Each mode shape shows a significant natural frequency and eigenmode based on the boundary condition of the CNTs.
For a given [sigma] > 0, the smallest eigenvalue [[chi].sub.1]([sigma]) and corresponding eigenfunction [u.sub.1] define the eigenmode which is called the fundamental mode (see the bottom curve plotted by the red solid line in Figure 2).
As the tuning of the two resonances by a single geometric parameter l (the length of the strip) is not feasible, the eigenmode overlap is obtained by adjusting either the spacer or the alignment of the paired metallic strips .
The high-frequency characteristics of the double-slotted helix SWS, which include dispersion characteristics, interaction impedance, are calculated by the eigenmode solver with master and slave boundary conditions  in the 3-D electromagnetic simulation software Ansoft HFSS .

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