Figures_Acoustic_DEWESOFTX software_Dr. Arun Y Patil.zip

This paper presents an experimental investigation of single and double-stage structures subjected to free and forced vibrations, focusing on determining their natural frequencies and analyzing their dynamic behavior. A homogeneous cantilever beam and its variants, with and without media (copper beam), were tested using the DEWESOFTX software. A free vibration analysis was conducted by recording the time-domain response, and the natural frequencies were calculated using the log decrement method. Forced vibration analysis was performed by mounting the structures on a shaker and analyzing the frequency response under forward sweep excitation. For the single-stage structure without media, the natural frequency was found to be 7.462 Hz in free vibration and 8.54 Hz in forced vibration, indicating good agreement. By incorporating a copper beam as a medium, the natural frequency decreased slightly to 7.324 Hz in both free and forced vibration, demonstrating its potential as a tuned mass damper (TMD) to effectively mitigate the vibrations. The double-stage structure exhibited natural frequencies of 25.63 Hz and 70.84 Hz in free vibration and 24.41 Hz and 71.24 Hz in forced vibration. These results validate the accuracy and consistency of the experimental setup. The use of a copper beam as a vibration damping medium effectively reduced the amplitude of the structure and enhanced its stability and performance. This study highlights the significance of vibration control using bio-inspired damping materials and provides valuable insights into the dynamic response of multi-stage structures. These findings are instrumental for applications in structural engineering and materials science, emphasizing sustainable solutions.