IX INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN
CIVIL ENGINEERING
BOOK OF ABSTRACTS , 2024.y., pp. 21-21
FFT ANALYSIS AND FILTERING OF OSCILLATING RESPONSE SIGNALS OF A SIMPLE WOOD GIRDER IN A VERTICAL PLANE| |
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| DOI: 10.14415/CACE2024.09 |
| UDC: 519.876.5: 624.042.7 |
| CC-BY-SA 4.0 license |
| Author : Miličić, Ilija M.; Miličić, Ivana I.; Prokić, Aleksandar D. |
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| | Summary: |
| | In this study, a computer simulation was conducted in the MATLAB 2021a software environment to verify the testing of the dynamic parameters of a wooden girder system. Accelerometer type TP54 with patent number 332/83 measured the oscillations. A digital oscilloscope, Hantek 6022BE, was used for visualizations of measurements. A low-pass Butterworth filter was used for signal filtering. We achieved good value of accuracy without applying a low-pass Butterworth filter. The signal filtering procedure applied during the software modelling of the response in the dynamic analysis only prolonged the processing and validation time of the treated girder. However, using a low-pass Butterworth filter is recommended as a "good practice". In conclusion, the original recorded individual responses of the girder's oscillations in the vertical plane under dynamic excitation exhibit high accuracy in the processed series of time-discrete signals with continuous amplitude. |
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| | Keywords: |
| | DYNAMIC ANAYSIS, DIGITAL SIGNAL, MECHANICAL ACCELEROMETER, OSCILLATION, SIGNAL FILTERING, GIRDER |
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