A new beam with periodically attached multi-resonators is presented It is found that attached resonators may reduce wave amplitude effectively It is also found that multiple resonators can lead to multiple resonant-type bandgaps with remarkable wave attenuation Three types of unit cell are considered: a beam with one single resonator; a beam with resonators in parallel; and a beam with resonators in series By changing the mass and spring constant the range and location of the bandgap can be tailored From the FEA and experimental results it is seen that waves can be significantly reduced in a beam with resonators if the external frequency is within the bandgap In addition the experimental results have been compared with the theoretical analysis and FEA results
Vibration Analysis of Rectangular Beams with Multi-Resonators
淞貿, 蔡. (Author). 2015 8月 26
學生論文: Master's Thesis