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http://dx.doi.org/10.22156/CS4SMB.2021.11.09.130

Characteristics of Forced Vibration System According to the Frequency of External Exciting Force  

Kim, Jong-Do (Industry Academic Cooperation Foundation, Jungwon University)
Yoon, Moon-Chul (Department of Mechanical Design Engineering, Pukyung National University)
Publication Information
Journal of Convergence for Information Technology / v.11, no.9, 2021 , pp. 130-137 More about this Journal
Abstract
The characteristics of forced vibration by an external excitation force having a frequency were analyzed according to the amplitude and frequency of the excitation force. To obtain displacement, velocity, and acceleration, numerical analysis was performed to obtain the frequency response, and in particular, each FRF(Frequency Response Function) was analyzed to reveal the location of the system natural frequency and excitation frequency in the frequency domain. In the vibration model caused by external excitation, the natural frequency and distribution of the surrounding excitation mode in displacement, velocity and acceleration FRF. The FRF was also shown in the power spectrum and FRF of real and imaginary parts. The external excitation force was approximated with the excitation force of a sine wave by giving the amplitude and frequency, the mode generated by this excitation force could be distinguished. After numerical analysis by changing the equivalent mass, damping and stiffness, the forced vibration response characteristics by external excitation force were systematically analyzed.
Keywords
Damping ratio; Excited external force; Forced vibration; FRF; Natural frequency;
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1 J. D. Kim & M. C. Yoon. (2020). Response Characteristics of Forced Vibration Model with Sinusoidal Exciting Force, Journal of Convergence for information technology, 10(7), 131-137. DOI : 10.22156 /CS4SMB.2020.10.07.131   DOI
2 L. Gaul. (1999). The influence of damping on waves and vibrations. Mechanical Systems and Signal Processing, 13(1), 1-30. DOI : 10.1006/mssp.1997.0185   DOI
3 S. Nakamura. (1995). Applied Numerical Methods in C, Prentice Hall.
4 S. M. Kay. (1990). Modern spectral estimation: theory and application, Prentice-Hill.
5 H. Lee, M. C. Yoon and J. D. Kim. (2020). Forced vibration analysis and response characteristics of the vehicle's dull progress model. Journal of Korean Society of Manufacturing Process Engineers, 19(11), 49-57. DOI : 10.14775/ksmpe.2020.19.11.049   DOI
6 J. D. Kim & M. C. Yoon. (2021). Response Characteristics of Forced Vibration of High Damping Vehicle Passing the Bumped Barrier, Journal of Convergence for information technology 11(3), 132-139. DOI : 10.22156 /CS4SMB.2021.11.03.132   DOI
7 C. Steven Chapra. (2010). Applied Numerical Methods with MATLAB for Engineers and Scientists, McGraw-Hill.
8 J. D. Kim & M. C. Yoon. (2010). Mode Analysis of Coupled System. Journal of Korean Society of Manufacturing Process Engineers, 9(3), 28-34.
9 L. Ljung & T. Glad. (1999). Modeling of Dynamic Systems, Prentice-Hill.
10 J. D. Kim, M. C. Yoon, S. J. Kim & B. S. Yang. (2010). Mode Analysis of Uncoupled System. Journal of Korean Society of Manufacturing Process Engineers, 9(3), 35-41.