Some features of the acceleration impulse response function
| Autor: | Oscar Scussel, Bin Tang, Michael J. Brennan, M.K. Iwanaga, F.C.L. Almeida |
|---|---|
| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Dalian University of Technology |
| Rok vydání: | 2021 |
| Předmět: |
Frequency response
Dirac delta function Impulse response functions 02 engineering and technology Impulse (physics) 01 natural sciences Electrodynamic shaker Displacement (vector) High Energy Physics::Theory Acceleration symbols.namesake Frequency response functions 0203 mechanical engineering 0103 physical sciences 010301 acoustics Impulse response Heaviside function Physics Oscillation Mechanical Engineering Mathematical analysis Condensed Matter Physics 020303 mechanical engineering & transports Mechanics of Materials Frequency domain Fourier transform symbols |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1572-9648 0025-6455 |
| DOI: | 10.1007/s11012-020-01265-4 |
| Popis: | Made available in DSpace on 2021-06-25T10:48:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 National Outstanding Youth Science Fund Project of National Natural Science Foundation of China Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Impulse response functions (IRFs) and frequency response functions (FRFs) are fundamental quantities that describe the dynamic behaviour of a linear vibrating system in the time and frequency domains respectively. The acceleration IRF is of particular concern in this paper, because unlike the displacement and velocity IRFs it contains a Delta function as well as a decaying oscillation. The origin of this Delta function is shown to be due to the causality constraint rather than the system. To illustrate the characteristics of the IRFs and FRFs, simulations are presented for a single-degree-of-freedom system, and are supported by some laboratory experimental work. The acceleration IRF is partitioned into the impulse component (Delta function for the simulations) and the oscillatory component. They are separately transformed to the frequency domain to illustrate their effects in the accelerance FRFs for both simulated and measured data. Department of Mechanical Engineering UNESP-FEIS Institute of Internal Combustion Engine Dalian University of Technology Faculty of Science and Engineering UNESP-FCE Department of Mechanical Engineering UNESP-FEB Department of Mechanical Engineering UNESP-FEIS Faculty of Science and Engineering UNESP-FCE Department of Mechanical Engineering UNESP-FEB National Outstanding Youth Science Fund Project of National Natural Science Foundation of China: 11672058 FAPESP: 2013/50412-3 FAPESP: 2017/14432-0 FAPESP: 2017/16953-8 CNPq: 88887.374001/2019-00 |
| Databáze: | OpenAIRE |
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