In this work, we study the vibration and bending response of functionally graded graphene platelets reinforced composite (FG-GPLRC) rectangular plates embedded on different substrates and thermal conditions. The governing equations of the problem along with boundary conditions are determined by employing ...
When friction between two surfaces supplies the damping mechanism, the response to a harmonic input is no longer harmonic because of the nonlinearity in the system. There may still be a periodic, but anharmonic, response. Such problems cannot be solved by the frequency-domain methods, in which ...
In particular, it is shown that the extremal values of the magnitude and phase of the value set at each frequency, which are in general non-convex optimization problems, can be computed via the solution of a sequence of Linear Matrix Inequalities (LMIs) 展开 ...
AutoEq is not just a collection of automatically produced headphone equalization settings but also a tool for equalizing headphones for yourself. AutoEq provides methods for reading data, equalizing it to a given target response and saving the results for usage with equalizers. It's possible to use...
Using an elliptic coordinate transformation, the unsteady boundary value problem is solved in the frequency domain on grids which are determined as a function of the Mach number and reduced frequency. Extensive comparisons are made with known solutions to unsteady vortical flow problems, and it is ...
A structural modification method based on frequency response functions is presented in terms of an inverse eigenvalue problem. The design objective is to derive multiple lumped mass, damper and stiffness modifications needed to reallocate eigenvalues and specify eigenvectors of an existing structure. A ...
Indoor Measurements of Noise at Low Frequencies -Problems and Solutions LOW FREQUENCY NOISE, VIBRATION AND ACTIVE CONTROL Due to standing waves, the sound pressure level within a room may vary as much as 20-30 dB at low frequencies. Principal properties of low-frequency sound... S Pedersen,...
Signal waveform is the basic physical layer element that fundamentally determines the most important key performance indicator in communication systems, namely spectral efficiency. Traditional waveforms rely on orthogonal Nyquist shaping but result in re
and the direct response calibration must be carried out at TP1 test point in order to correctly measure the voltage transfer function / out / / in. If the through response calibration is not performed (or the feedthrough is not connected, as shown in Figure 5), the measured gain will be ...
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