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http://dx.doi.org/10.22156/CS4SMB.2022.12.03.151

FRF Analysis of a Vehicle Passing the Bump Barrier  

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.12, no.3, 2022 , pp. 151-157 More about this Journal
Abstract
The purpose of this study was to investigate the frequency characteristics of forced vibration considering the vehicle progress. And the vibration characteristics in frequency domain that occur, when vehicle passes the bump, were analyzed. The responses such as displacement, velocity and acceleration were obtained through numerical analysis, and FFT processing was performed to analyze the frequency response function(FRF) characteristics. In particular, the location of vehicle eigenmodes and external excitation modes was clearly shown and analyzed. In the forced vibration model by external force, the behavior of the eigenmode in power spectrum and real and imaginary parts were also analyzed. The mode characteristics were also analyzed in each FRF. It was approximated by assuming total excitation force by considering the exciting frequency using impulse and sine wave forces, which can give the amplitude and frequencies. The response characteristics of forced oscillations having different mass, damping and stiffness have been systematically discussed.
Keywords
Damping ratio; Excited external force; Forced vibration; Frequency response; Natural mode;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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