Thx for the reply, the metal is vibrated using a small piece of pzt material(acts as actuator&sensor simultaneously) glued to it. the PZT material is vibrated by inputing AC voltage(1 volt) from 10kHz to 90kHz using a function generator. Maybe its the natural frequency of the PZT material?
But...
For a spring and mass system, I've learned the resonance frequency of a system increases with decrease in mass.
Not sure if this case is also related but when I attach a coin sized metal onto a piezoelectric material of a smaller size, the resonance frequency range actually goes up (from...
Hello Peeps~ I have couple of questions related to vibration and I would really appreciate some help from you experts out there.
Anyways, say I have a metal plate with mode shapes observed at 100 Hz and 300 Hz as shown in the below figures. If I were to chip(cut) off a small part of the...