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Frequency response function
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The receptance function is very important which interrelates the harmonic excitation and the response of a structure in the frequency domain. This report presents the exact formula of receptance function of AFG beam with varying width. When the width of beam decreases from the fixed end to the free end, the natural frequencies of the AFG beam increase.
10p
dathienlang1012
03-05-2024
2
0
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In the present report, a novel concept of frequency response function (FRF) is introduced for piezoelectric beam. First, a model of Timoshenko beam bonded with a piezoelectric layer is established and used for deriving the conventional frequency response function acknowledged as mechanical frequency response function (MERF). Then, the output charge produced in the piezoelectric layer is calculated from the MFRF and therefore obtained frequency-dependent function is called electrical frequency response function (EFRF) for the integrated beam.
16p
dianmotminh02
03-05-2024
2
1
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This paper presents a method for establishing the exact receptance function of a tapered axially functionally graded (AFG) beam with nonlinear ratios of properties using the Adomian method. In current papers, the Adomian method was applied for linearly tapered beams where the geometric series was used conveniently.
22p
dianmotminh02
03-05-2024
3
2
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In the present study, a novel indicator extracted from FRFs of beam structures is developed for crack identification. The damage indicator originated from the well-known mode assurance criterion (MAC) and therefore it is termed spectral assurance criterion (SAC).
14p
vijeff
30-11-2023
7
3
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This paper presents a simplified model of cracked beam by single-degree-offreedom system. Equivalence between the beam and SDOF models means that they have the same fundamental natural frequency and similar frequency response functions (FRFs).
14p
viisac
15-09-2023
5
3
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This paper presents a unified approach to vibration analysis of functionally graded beams with transverse open-edge cracks based on the so-called vibration shape obtained as a general solution of vibration equations in the frequency domain.
31p
viwolverine
11-07-2023
3
2
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Drug response variability observed amongst patients is caused by the interaction of both genetic and non-genetic factors, and frequencies of functional genetic variants are known to vary amongst populations. Pharmacogenomic research has the potential to help with individualized treatments.
13p
vinarcissa
21-03-2023
2
1
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Lecture Physiological signal processing - Chapter 6: Discrete filters. This chapter will cover the following: types of filters; transfer function and frequency response; group delay and inverse system; minimum and linear phase filters; design of FIR filters; design of IIR filters; structure of realization of discrete filters;... Please refer to the chapter for details!
260p
chutieubang
06-12-2022
16
3
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Lecture Automatic control systems technology - Lesson 10: The laplace transform. After this presentation you will be able to: explain how the Laplace transform relates to the transient and sinusoidal responses of a system; convert time functions into the Laplace domain; use Laplace transforms to convert differential equations into algebraic equations; take the Inverse Laplace transform and find the time response of a system;... Please refer to the content of document.
19p
tieuvulinhhoa
22-09-2022
10
5
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Lecture Automatic control systems technology - Lesson 21: Methods of system analysis. After this presentation you will be able to: compute the value of transfer function for given frequencies; compute the open loop response of a control system; compute and interpret the closed loop response of a control system; compute and interpret the error ratio of a control system;... Please refer to the content of document.
29p
tieuvulinhhoa
22-09-2022
8
5
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Lecture Introduction to Circuits for ECE - Lesson 37: Transfer functions and Bode plots revisited. The main topics covered in this chapter include: transfer function in s-Domain, poles and zeros of the transfer function, pole location and natural response, sinusoidal steady-state frequency response
11p
linyanjun_2408
23-04-2022
13
1
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Ovarian chronic inflammation has been known to incidence in the laying hen mainly via increasing laying frequency and microbial infection, especially during late stage of production period. This study was aimed to evaluate beta-2 adrenergic agonist (Beta-2 Adrenergic Agonist, BAA) Salmeterol and beta blocker (Beta Blocker, BB).
13p
vidarwin
23-02-2022
9
1
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The warming climate is causing livestock to experience heat stress at an increasing frequency. Holstein cows are particularly susceptible to heat stress because of their high metabolic rate. Heat stress negatively affects immune function, particularly with respect to the cell-mediated immune response, which leads to increased susceptibility to disease.
11p
vidarwin
23-02-2022
14
1
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Lecture ELEC2400 signals and systems: Chapter 5 - Fourier series and fourier transform. After completing this section, you will understand the knowledge about frequency response and transfer function, the fourier transform, inverse fourier transform and properties of fourier transform.
35p
lazzaro
03-12-2021
20
4
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This paper points out how much useful vibration can be extracted from a baseexcited oscillator, which is controlled by the on-off electrical damping. We studies the class of on-off electrical damping controller, which switches the damping level from high to low and back at fixed times every quarter of period. The problem reduces to the maximization of a single-variable function. This result can open the new direction to amplify the useful vibration using controllable dampings.
8p
nguaconbaynhay11
07-04-2021
16
3
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This paper establishes the exact receptance function of a clamped-clamped beam carrying concentrated masses. The derivation of exact receptance and the numerical simulations are provided. The proposed receptance function can be used as a convenient tool for predicting the dynamic response at arbitrary point of the beam acted by a harmonic force applied at arbitrary point.
14p
nguaconbaynhay11
07-04-2021
20
2
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This paper presents the derivation of the exact receptance function of continuous cracked beams and its application for crack detection. The receptance curvature is defined as the second derivative of the receptance. The influence of the crack on the receptance and receptance curvature is investigated. It is concluded that when there are cracks the receptance curvature has sharp changes at the crack positions. This can be applied for the crack detection purpose. In this paper, the numerical simulations are provided.
13p
nguaconbaynhay11
07-04-2021
8
2
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The paper presents a performance analysis of global-local mean square error criterion of stochastic linearization for some nonlinear oscillators. This criterion of stochastic linearization for nonlinear oscillators bases on dual conception to the local mean square error criterion (LOMSEC).
15p
nguaconbaynhay11
07-04-2021
11
1
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The aims of this study are to develop and apply the method of using frequency response functions to diagnose cracks in elastic bar and beams structure. The contents of the study includes: building models of cracked elastic bar and 3 beams structure; studying the changes of oscillation parameters, mainly frequency response functions due to cracks.
27p
larachdumlanat129
20-01-2021
19
5
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The paper shows that the response of the random Rayleigh system, which is under harmonic and random excitations, can be found by a system of algebraic equations. The analytical approach is based on the stochastic averaging method and equivalent linearization method in Cartesian coordinates so that the Fokker-Planck equation associated with the linear equations obtained can be solved exactly by the technique of auxiliary function. The harmonic excitation frequency is taken to be in the neighborhood of the system natural frequency.
11p
trinhthamhodang9
10-12-2020
20
1
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